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Features of the formation of the market of the common grape vine (Vitis vinifera L.) national varietal resources النص الكامل
2019
Мельник, С. І | Орленко, Н. С | Матус, В. М | Мажуга, К. М | Керімов, А. Н
Features of the formation of the market of the common grape vine (Vitis vinifera L.) national varietal resources النص الكامل
2019
Мельник, С. І | Орленко, Н. С | Матус, В. М | Мажуга, К. М | Керімов, А. Н
Purpose. Reveal the peculiarities of the formation of national varietal resources of grapes, considering current state of the market, needs of consumers, problems and prospects of the viticulture industry in Ukraine. Results. The monitoring of the national varietal resources of the common grape vine in the chronology of the formation of a well-known varieties collection used both for food purposes and in the further breeding process. As of the beginning of 2019, 51 grape varieties of the common grape vine are included in the State Register of Plant Varieties suitable for dissemination in Ukraine. In recent years, there has been a tendency to a decrease in the number of new varieties, reduction in the total area of vineyards and young plantings. Technical varieties of the crop dominate in the Register of plant varieties of Ukraine; the assortment of the table grapes and universal groups needs to be expanded. The largest share among the common varieties in Ukraine is occupied by ones of domestic breeding. The results of monitoring of renewal dynamics of the common grape vine varieties in the State Register of Plant Varieties of Ukraine over the past five years indicate a negative trend: 2013 – 11 varieties, 2015 – two, 2018 – one variety. Therefore, the issues of the formation of national varietal resources of grapes are relevant and require a scientific approach to the breeding process, the state scientific and technical examination of the application for a variety of plants and their commercial circulation. New varieties of the common grape vine are included in the State Register of Plant Varieties of Ukraine based on the results of the state scientific and technical expertise on the plant variety; it provides for the establishment of criteria for distinctness, uniformity and stability using the morphological description of the identification signs of vegetative and generative organs of grapes and the determination of economically valuable indicators of new varieties. Conclusions. The total number of the common grape vine varieties in Ukraine for the period 2015–2018 decreased, due to the low level of applications for new varieties of both domestic and foreign breeding. The search for modern methods and directions of breeding, the use of new methods for crop varieties and clones identification remains a reserve for expanding the common grape vine assortment
اظهر المزيد [+] اقل [-]Features of the formation of the market of the common grape vine (Vitis vinifera L.) national varietal resources النص الكامل
2019
С. І. Мельник | Н. С. Орленко | В. М. Матус | К. М. Мажуга | А. Н. Керімов
Purpose. Reveal the peculiarities of the formation of national varietal resources of grapes, considering current state of the market, needs of consumers, problems and prospects of the viticulture industry in Ukraine. Results. The monitoring of the national varietal resources of the common grape vine in the chronology of the formation of a well-known varieties collection used both for food purposes and in the further breeding process. As of the beginning of 2019, 51 grape varieties of the common grape vine are included in the State Register of Plant Varieties suitable for dissemination in Ukraine. In recent years, there has been a tendency to a decrease in the number of new varieties, reduction in the total area of vineyards and young plantings. Technical varieties of the crop dominate in the Register of plant varieties of Ukraine; the assortment of the table grapes and universal groups needs to be expanded. The largest share among the common varieties in Ukraine is occupied by ones of domestic breeding. The results of monitoring of renewal dynamics of the common grape vine varieties in the State Register of Plant Varieties of Ukraine over the past five years indicate a negative trend: 2013 – 11 varieties, 2015 – two, 2018 – one variety. Therefore, the issues of the formation of national varietal resources of grapes are relevant and require a scientific approach to the breeding process, the state scientific and technical examination of the application for a variety of plants and their commercial circulation. New varieties of the common grape vine are included in the State Register of Plant Varieties of Ukraine based on the results of the state scientific and technical expertise on the plant variety; it provides for the establishment of criteria for distinctness, uniformity and stability using the morphological description of the identification signs of vegetative and generative organs of grapes and the determination of economically valuable indicators of new varieties. Conclusions. The total number of the common grape vine varieties in Ukraine for the period 2015–2018 decreased, due to the low level of applications for new varieties of both domestic and foreign breeding. The search for modern methods and directions of breeding, the use of new methods for crop varieties and clones identification remains a reserve for expanding the common grape vine assortment
اظهر المزيد [+] اقل [-]Features of the formation of the market of the common grape vine (Vitis vinifera L.) national varietal resources | Особливості формування ринку національних сортових ресурсів винограду справжнього (Vitis vinifera L.) | Особенности формирования рынка национальных сортовых ресурсов винограда культурного (Vitis vinifera L.) النص الكامل
2019
Мельник, С. І. | Орленко, Н. С. | Матус, В. М. | Мажуга, К. М. | Керімов, А. Н.
Мета. Розкрити особливості формування національних сортових ресурсів винограду, з огляду на сучасний стан ринку, потреби споживачів, проблеми та перспективи галузі виноградарства в Україні.Результати. Здійснено моніторинг національних сортових ресурсів винограду справжнього в хронології формування колекції загальновідомих сортів, які використовують як для продовольчих цілей, так і в подальшому селекційному процесі. Станом на початок 2019 р. до Державного реєстру сортів рослин, придатних для поширення в Україні включено 51 сорт винограду справжнього. Протягом останніх років спостерігається тенденція до зменшення кількості нових сортів, скорочення загальної площі виноградників та закладання молодих насаджень. У Реєстрі сортів рослин України домінують сорти культури технічного напряму використання, потребує розширення сортимент столової та універсальної групи. Найбільшу частку серед поширених на території України займають сорти вітчизняної селекції. Результати моніторингу динаміки сортооновлення винограду справжнього в Державному реєстрі сортів рослин України за останні п’ять років свідчать про негативну тенденцію: 2013 р. – 11 сортів, 2015 р. – два, 2018 р. – один сорт. Тому питання формування національних сортових ресурсів винограду справжнього є актуальним та потребує наукового підходу до селекційного процесу, державної науково-технічної експертизи заявки на сорт рослин та їх комерційного обігу. Нові сорти винограду справжнього включають до Державного реєстру сортів рослин України на підставі результатів державної науково-технічної експертизи на сорт рослин, яка передбачає встановлення критеріїв відмітності, однорідності та стабільності методом морфологічного опису ідентифікаційних ознак вегетативних і генеративних органів винограду й визначення господарськоцінних показників нових сортів.Висновки. Загальна кількість сортів винограду справжнього в Україні за період 2015–2018 рр. зменшилася, що зумовлено низьким рівнем подання заявок на нові сорти як вітчизняної, так і зарубіжної селекції. Резервом розширення сортименту винограду справжнього залишається пошук сучасних методів та напрямів селекції, застосування новітніх методів ідентифікації сортів і клонів культури | Purpose. Reveal the peculiarities of the formation of national varietal resources of grapes, considering current state of the market, needs of consumers, problems and prospects of the viticulture industry in Ukraine. Results. The monitoring of the national varietal resources of the common grape vine in the chronology of the formation of a well-known varieties collection used both for food purposes and in the further breeding process. As of the beginning of 2019, 51 grape varieties of the common grape vine are included in the State Register of Plant Varieties suitable for dissemination in Ukraine. In recent years, there has been a tendency to a decrease in the number of new varieties, reduction in the total area of vineyards and young plantings. Technical varieties of the crop dominate in the Register of plant varieties of Ukraine; the assortment of the table grapes and universal groups needs to be expanded. The largest share among the common varieties in Ukraine is occupied by ones of domestic breeding. The results of monitoring of renewal dynamics of the common grape vine varieties in the State Register of Plant Varieties of Ukraine over the past five years indicate a negative trend: 2013 – 11 varieties, 2015 – two, 2018 – one variety. Therefore, the issues of the formation of national varietal resources of grapes are relevant and require a scientific approach to the breeding process, the state scientific and technical examination of the application for a variety of plants and their commercial circulation. New varieties of the common grape vine are included in the State Register of Plant Varieties of Ukraine based on the results of the state scientific and technical expertise on the plant variety; it provides for the establishment of criteria for distinctness, uniformity and stability using the morphological description of the identification signs of vegetative and generative organs of grapes and the determination of economically valuable indicators of new varieties. Conclusions. The total number of the common grape vine varieties in Ukraine for the period 2015–2018 decreased, due to the low level of applications for new varieties of both domestic and foreign breeding. The search for modern methods and directions of breeding, the use of new methods for crop varieties and clones identification remains a reserve for expanding the common grape vine assortment | Цель. Раскрыть особенности формирования национальных сортовых ресурсов винограда, учитывая современное состояние рынка, потребности потребителей, проблемы и перспективы отрасли виноградарства в Украине. Результаты. Осуществлен мониторинг национальных сортовых ресурсов винограда культурного в хронологии формирования коллекции общеизвестных сортов, которые используют как в продовольственных целях, так и в дальнейшем в селекционном процессе. По состоянию на начало 2019 г. в Государственный реестр сортов растений, пригодных для распространения в Украине, включено 51 сорт винограда культурного. В последние годы наблюдается тенденция к уменьшению количества новых сортов, сокращение общей площади виноградников и закладки молодых насаждений. В Реестре сортов растений Украины доминируют сорта культуры технического направления использования, нуждается в расширении асортимент столовой и универсальной группы. Наибольшую удельную долю среди распространенных на территории Украины занимают сорта отечественной селекции. Результаты мониторинга динамики сортообновления винограда культурного в Государственном реестре сортов растений Украины за последние пять лет свидетельствуют о негативной тенденции: 2013 г. – 11 сортов, 2015 г. – два, 2018 г. – один сорт. Поэтому вопросы формирования национальных сортовых ресурсов винограда культурного актуальны и требуют научного подхода к селекционному процессу, государственной научно-технической экспертизе заявки на сорт растений и их коммерческого оборота. Новые сорта винограда культурного включают в Государственный реестр сортов растений Украины на основании результатов государственной научно-технической экспертизы на сорт растений, которая предусматривает установление критериев отличия, однородности и стабильности методом морфологического описания идентификационных признаков вегетативных и генеративных органов винограда и определения хозяйственно-ценных показателей новых сортов. Выводы. Общее количество сортов винограда культурного в Украине за период 2015–2018 гг. уменьшилось, что обусловлено низким уровнем подачи заявок на новые сорта как отечественной, так и зарубежной селекции. Резервом расширения сортимента винограда культурного остается поиск современных методов и направлений селекции, применение новейших методов идентификации сортов и клонов культуры.
اظهر المزيد [+] اقل [-]The role of variety in increasing seed productivity of China Aster (Callistephus chinensis (L.) Nees) النص الكامل
2015
Шевель, Л. О | Рудник-Іващенко, О. І
The role of variety in increasing seed productivity of China Aster (Callistephus chinensis (L.) Nees) النص الكامل
2015
Шевель, Л. О | Рудник-Іващенко, О. І
Рurpose. Determining the influence of the varietal features on seed productivity of China Aster when growing under conditions of Forest-Steppe zone of Ukraine. Methods. Field study during 2011–2013 on experimental field of Institute of Horticulture of the National Academy of Agriculture Sciences. Results. It was experimentally determined the influence of varietal features on seed productivity for various sort-types of China Aster. Based on morphological description, the growth and development of this plant was shown as well as dependence of generative organs on quantitative parameters of vegetative ones, and their impact on the productivity of various variety types either of the Institute of Horticulture or other scientific institutions breeding. Structure of flowers for various sort-types was illustrated. The most productive varieties were identified among those that are included in the State Register of plant varieties suitable for dissemination in Ukraine which have formed the average of 3 g of seeds or more per plant during the years of study. Conclusions. Edaphoclimatic conditions of the Forest-Steppe zone of Ukraine are favorable for seed-producing industry of China Aster. Its productivity considerably depends on a variety and sort-type to which it belongs.
اظهر المزيد [+] اقل [-]The role of variety in increasing seed productivity of China Aster (Callistephus chinensis (L.) Nees) النص الكامل
2015
Л. О. Шевель | О. І. Рудник-Іващенко
Рurpose. Determining the influence of the varietal features on seed productivity of China Aster when growing under conditions of Forest-Steppe zone of Ukraine. Methods. Field study during 2011–2013 on experimental field of Institute of Horticulture of the National Academy of Agriculture Sciences. Results. It was experimentally determined the influence of varietal features on seed productivity for various sort-types of China Aster. Based on morphological description, the growth and development of this plant was shown as well as dependence of generative organs on quantitative parameters of vegetative ones, and their impact on the productivity of various variety types either of the Institute of Horticulture or other scientific institutions breeding. Structure of flowers for various sort-types was illustrated. The most productive varieties were identified among those that are included in the State Register of plant varieties suitable for dissemination in Ukraine which have formed the average of 3 g of seeds or more per plant during the years of study. Conclusions. Edaphoclimatic conditions of the Forest-Steppe zone of Ukraine are favorable for seed-producing industry of China Aster. Its productivity considerably depends on a variety and sort-type to which it belongs.
اظهر المزيد [+] اقل [-]Role of scab-resistant apple varieties in forming assortment of new industrial apple plantings (Malus domestica Borkh.) النص الكامل
2015
Гончарук, Ю. Д
Role of scab-resistant apple varieties in forming assortment of new industrial apple plantings (Malus domestica Borkh.) النص الكامل
2015
Гончарук, Ю. Д
Purpose. Identifying new scab-resistant apple varieties with high biological potential by the set of agronomic characters and the ability to realize it effectively in various soil and climatic conditions. Methods. Field, laboratory, comparison, generalization, statistical ones. Results. The author presents the results of study of 17 scab-resistant non-irrigated apple varieties on a semi-dwarf rootstock as to their adaptability to biotic and abiotic stressors as well as their economic productivity. The studied varieties appeared to be winter-hardy, frost- and heat-resistant, but medium drought-tolerant ones. They are characterized by weak and moderate susceptibility to powdery mildew, high resistance to fruit rot and very low amounts of brown spot, except for Gold Rush variety. Such 10 year old varieties as ‘Edera’, Florina’, ‘Amulet’ and ‘Perlyna Kyieva’ and 8 year old ‘Afrodita’, ‘Vitos’, ‘Orlovskoie Polesie’ and ‘Topaz’ formed the highest productivity during the years of study. Due to the pollen quality and high interfertility, ‘Revena’ and ‘Gold Rush’ varieties were identified as universal pollinators for winter scab-resistant apple varieties. Conclusions. Such ecologically resistant winter varieties as ‘Topaz’, ‘Freedom’, ‘Edera’ and autumnal ‘Remo’, ‘Afrodita’, ‘Vitos’, ‘Amulet’ were recognized as promising for new intensive non-irrigated plantations in the Forest-Steppe zone of Ukraine. They can be the basis of new gardens occupying 25–30% of the area where ecologically safe fruits for various target purposes will be grown supplying demands of the population and processing industry.
اظهر المزيد [+] اقل [-]Role of scab-resistant apple varieties in forming assortment of new industrial apple plantings (Malus domestica Borkh.) النص الكامل
2015
Ю. Д. Гончарук
Purpose. Identifying new scab-resistant apple varieties with high biological potential by the set of agronomic characters and the ability to realize it effectively in various soil and climatic conditions. Methods. Field, laboratory, comparison, generalization, statistical ones. Results. The author presents the results of study of 17 scab-resistant non-irrigated apple varieties on a semi-dwarf rootstock as to their adaptability to biotic and abiotic stressors as well as their economic productivity. The studied varieties appeared to be winter-hardy, frost- and heat-resistant, but medium drought-tolerant ones. They are characterized by weak and moderate susceptibility to powdery mildew, high resistance to fruit rot and very low amounts of brown spot, except for Gold Rush variety. Such 10 year old varieties as ‘Edera’, Florina’, ‘Amulet’ and ‘Perlyna Kyieva’ and 8 year old ‘Afrodita’, ‘Vitos’, ‘Orlovskoie Polesie’ and ‘Topaz’ formed the highest productivity during the years of study. Due to the pollen quality and high interfertility, ‘Revena’ and ‘Gold Rush’ varieties were identified as universal pollinators for winter scab-resistant apple varieties. Conclusions. Such ecologically resistant winter varieties as ‘Topaz’, ‘Freedom’, ‘Edera’ and autumnal ‘Remo’, ‘Afrodita’, ‘Vitos’, ‘Amulet’ were recognized as promising for new intensive non-irrigated plantations in the Forest-Steppe zone of Ukraine. They can be the basis of new gardens occupying 25–30% of the area where ecologically safe fruits for various target purposes will be grown supplying demands of the population and processing industry.
اظهر المزيد [+] اقل [-]Varietal diversity of walnuts in the Crimea and the perspective of its use in selection النص الكامل
2012
Хохлов, С. Ю
Varietal diversity of walnuts in the Crimea and the perspective of its use in selection النص الكامل
2012
Хохлов, С. Ю
The results of studying of walnuts collection have been given; the evaluation of the assortment according to resistance to unfavorable climatic conditions has been done; some varieties have been recommended for using in breeding and introduction in industry.
اظهر المزيد [+] اقل [-]Sampling for vegetative propagation: A phytosanitary status survey of grapevines collection by One Step RT-PCR method النص الكامل
2021
М. Ізейрай
Purpose. Grapevines (Vitis spp.) are affected by many viral diseases which cause serious pathological problems. GLRaV-3 is among the most widespread leafroll viruses, while Grapevine Fanleaf Virus (GFLV) is a destructive pathogen which reduces the lifespan of grapevine. Considering the impact and the spread of these diseases, our objective was to analyse the presence of these two viruses in several grapevine varieties in grapevine collection at ATTC Vlore. Data gathered from plant pathogens serve to better understand and prevent the spread of pathogens, as a mandatory rule for the quality control of certified plant material during vegetative propagation. Method. The presence of two common viruses were tested using virus specific primers; LC1/LC2 primer pair designed from the hHSP70 gene for detecting Grapevine Leafroll-associated Virus-3 (GLRaV3) and C3390/H2999 primer pair, designed from coat protein coding regions for detecting Grapevine Fanleaf Virus (GFLV), in six varieties; ‘Merlot’, ‘Kallmet’, ‘Shesh i zi’, ‘Shesh i bardhё’, ‘Debinё’, and ‘Pulёz’, provided through a randomised sampling procedure. One Step Reverse Transcription Polymerase Chain Reaction assay was used to detect the viral presence. Results showed a high (100%) prevalence of GLRaV3 virus in all of analysed samples, as the most frequent among the two pathogens. Analysis for of GFLV virus showed low infection rate, being present in only one sample. Conclusions. We herein show an efficient, fast and reproducible method for detecting grapevine viruses through one step RT-PCR. Our results suggest that sampling of the infected plant material should be avoided due to the presence of viral infections.
اظهر المزيد [+] اقل [-]Fertilization - as productive economic method for adjustment of potential possibilities of the fiber flax varieties النص الكامل
2007
Янішевський, Л. І | Маційчук, В. М | Рибак, М. Ф
Fertilization - as productive economic method for adjustment of potential possibilities of the fiber flax varieties النص الكامل
2007
Янішевський, Л. І | Маційчук, В. М | Рибак, М. Ф
Authors of the article attempts to describe a state of the problem and accumulated achievements in the flax industry, which are in conjunction with one of the main agronomic remedies, namely fertilization and its influence on the quality of obtained products.
اظهر المزيد [+] اقل [-]Fertilization - as productive economic method for adjustment of potential possibilities of the fiber flax varieties. النص الكامل
2007
Л. І. Янішевський | В. М. Маційчук | М. Ф. Рибак
Authors of the article attempts to describe a state of the problem and accumulated achievements in the flax industry, which are in conjunction with one of the main agronomic remedies, namely fertilization and its influence on the quality of obtained products.
اظهر المزيد [+] اقل [-]Scientific principles of the forming of the variety composition of cereal crops in Ukraine النص الكامل
2006
Lytvynenko, M. A. | Волкодав, В. В
Scientific principles of the forming of the variety composition of cereal crops in Ukraine النص الكامل
2006
Lytvynenko, M. A. | Волкодав, В. В
The main principles of the forming of the scientifically based variety policy of Ukraine are described. A great role during the creating of varieties and hybrids with certain quantitative and qualitative characteristics belongs to the producers of the cereal and seed production, enterprises of the processing industry, firms, which supply their varieties to the world market.
اظهر المزيد [+] اقل [-]Scientific principles of the forming of the variety composition of cereal crops in Ukraine النص الكامل
2006
М. А. Литвиненко | В. В. Волкодав
The main principles of the forming of the scientifically based variety policy of Ukraine are described. A great role during the creating of varieties and hybrids with certain quantitative and qualitative characteristics belongs to the producers of the cereal and seed production, enterprises of the processing industry, firms, which supply their varieties to the world market.
اظهر المزيد [+] اقل [-]Ukrainian cereals and oilseeds trade النص الكامل
2016
Духницький, Б. В | Сіліфонов, Т. В
Ukrainian cereals and oilseeds trade النص الكامل
2016
Духницький, Б. В | Сіліфонов, Т. В
Purpose. To analyze peculiarities of Ukrainian cereals and oilseeds trade, the situation on the world market, and determine future prospects of its development. Methods. Analysis and synthesis, comparative evaluation, graphic procedure. Results. The role and place of Ukraine in a total grain supply to the world market was determined. Ukraine is a world’s top ten grain producer. Among domestic agricultural products, cereals, oilseeds and sunflower oil are in the highest demand in the world. In recent years, our state has reinforced its status as one of the leading exporters of cereals. The commodity pattern of cereals and oilseeds export was analyzed with specifying most in-demand positions and the main countries purchasing these products. According to the results of 2015, Ukraine obtained the highest foreign currency revenue from export of corn, wheat and barley (in grain structure) including soybeans and rapeseed (among oil crops). Key domestic and multinational operators are the main exporters of cereals and oilseeds in Ukraine and still hold their leading position. It was found a significant excess of import price of seeds as compared with export price of crops grown in Ukraine. Assortment of maize and sunflower seeds offered by major companies-producers in Ukraine was studied. Main trends of the world grain market development are considered. Conclusions. It was established that Ukraine is one of the major exporters of cereals and oilseeds. However, volatility of their prices significantly affects the export revenue that was decreasing even with increasing export quantities in kind. The dependence of domestic grain industry development on high-quality imported seed of maize and sunflower hybrids was recorded. It is expected that in the years to come Ukraine will maintain its strong positions in the world’s grain market.
اظهر المزيد [+] اقل [-]Ukrainian cereals and oilseeds trade النص الكامل
2016
Б. В. Духницький | Т. В. Сіліфонов
Purpose. To analyze peculiarities of Ukrainian cereals and oilseeds trade, the situation on the world market, and determine future prospects of its development. Methods. Analysis and synthesis, comparative evaluation, graphic procedure. Results. The role and place of Ukraine in a total grain supply to the world market was determined. Ukraine is a world’s top ten grain producer. Among domestic agricultural products, cereals, oilseeds and sunflower oil are in the highest demand in the world. In recent years, our state has reinforced its status as one of the leading exporters of cereals. The commodity pattern of cereals and oilseeds export was analyzed with specifying most in-demand positions and the main countries purchasing these products. According to the results of 2015, Ukraine obtained the highest foreign currency revenue from export of corn, wheat and barley (in grain structure) including soybeans and rapeseed (among oil crops). Key domestic and multinational operators are the main exporters of cereals and oilseeds in Ukraine and still hold their leading position. It was found a significant excess of import price of seeds as compared with export price of crops grown in Ukraine. Assortment of maize and sunflower seeds offered by major companies-producers in Ukraine was studied. Main trends of the world grain market development are considered. Conclusions. It was established that Ukraine is one of the major exporters of cereals and oilseeds. However, volatility of their prices significantly affects the export revenue that was decreasing even with increasing export quantities in kind. The dependence of domestic grain industry development on high-quality imported seed of maize and sunflower hybrids was recorded. It is expected that in the years to come Ukraine will maintain its strong positions in the world’s grain market.
اظهر المزيد [+] اقل [-]Analyzes of National Varietal Resources of Sugar Beet (Beta vulgaris L.) النص الكامل
2011
Мілієнко, М. В
Analyzes of National Varietal Resources of Sugar Beet (Beta vulgaris L.) النص الكامل
2011
Мілієнко, М. В
The article considers national varietal sources of sugar beets, namely the progress of their generation, as well as general characteristics of productivity. Main trends in breeding reflecting the needs of society are highlighted. Importance of official qualifying examination for generating high-quality varietal diversity aimed at meeting the needs of national beetroot industry is emphasized.
اظهر المزيد [+] اقل [-]Analyzes of National Varietal Resources of Sugar Beet (Beta vulgaris L.). النص الكامل
2011
М. В. Мілієнко
The article considers national varietal sources of sugar beets, namely the progress of their generation, as well as general characteristics of productivity. Main trends in breeding reflecting the needs of society are highlighted. Importance of official qualifying examination for generating high-quality varietal diversity aimed at meeting the needs of national beetroot industry is emphasized.
اظهر المزيد [+] اقل [-]