PARTICLE SIZE OF VARIETY SAMPLES SPRING BARLEY SEEDS OF COLLECTION BY UMAN NATIONAL UNIVERSITY OF HORTICULTURE | КРУПНІСТЬ НАСІННЯ СОРТОЗРАЗКІВ ЯЧМЕНЮ ЯРОГО КОЛЕКЦІЇ УМАНСЬКОГО НАЦІОНАЛЬНОГО УНІВЕРСИТЕТУ САДІВНИЦТВА

Inglés. The quality of the seed is one of the main conditions for obtaining a high, stable yield of crops. Indicators of seed quality include its size. Seeds should not have only high seeding qualities, but also a high yield potential. For the conduct of seed production important is a large, well-executed seed, although the average size of seeds is not much different from large ones and can be successfully used for sowing. Stumpy and underdeveloped seeds do not allow obtaining plants that are characterized by high viability and yield.The size of the seeds largely depends on the biological characteristics of the variety. With the increase in the fraction of the sown seeds, within a single variety, the number of germ roots increases, the plants are formed more powerful and are characterized by a rapid passage of the stages of organogenesis. The increase in the fraction of seeds contributed to an increase in both the field germination index and the tendency to increase the yield.There are the size of five spring barley variety samples of collection by Uman national university of horticulture in the article. In average of 2015 and 2016 years, the ratio of the width to the thickness and the length of the seeds of the variety Commander was 1.4:1:3.6. The thickness of the seed was the smallest dimension of the analyzed samples. The largest seeds were in breeding sample 17/16, smaller - 23/16 and 2/16.In standard and breeding numbers 10/16; 23/16 and 29/16 three fractions seeds separated respectively sieves size: 2.5 / 20; 2.0/20 and 1.7 / 20 mm. Seeds of sample 17/16 had else another fraction 1. / 20 mm, while the sample 2/16 represented only two allied fractions seeds. However, in all variety samples largest seeds group was over 86%.Mass of 1000 seeds Commander varieties average for two years was 44.8 g, in the studied variety samples - 41.1 - 46.9 g.By this measure variety sample 2/16 significantly inferior standard and selective number 17/16 substantially exceeded its during two years of research. Significant difference between the breeding samples 10/16, 23/16 and 29/16 and standards were not observed.The sorting of seeds should be carried out according to its thickness, since it was the smallest parameter of all analyzed sort samples. The high leveling of barley seeds of the old material presented was noted (the share of the largest fraction was 86.6 - 91.8%). The mass of 1000 seeds of breeding numbers an average of two years of experiments was at the level of 41.1 - 46.9 g, that is, it was quite high.

Ucranio. У статті наведено розміри насіння п'яти сортозразків ячменю ярого колекції Уманського НУС. Згідно середніх даних за 2015 і 2016 рр., у сорту Командор (стандарт) співвідношення ширини до товщини та до довжини насіння становило 1,4:1:3,6. Товщина насіння була найменшим параметром у всіх аналізованих зразків. Найкрупнішим насінням характеризувався селекційний зразок 17/16, а найдрібнішим - 23/16 і 2/16.У стандарту та селекційних номерів 10/16; 23/16 і 29/16 виділилось три фракції насіння відповідно розмірам решіт: 2,5/20; 2,0/20 і 1,7/20 мм. Насіння зразка 17/16 мало ще одну фракцію 1,2/20 мм, тоді як у зразка 2/16 виявлено лише дві суміжні фракції насіння. Проте у всіх аналізованих номерів найбільша фракція насіння становила понад 86%.Маса 1000 насінин сорту Командор у середньому за два роки становила 44,8 г., у досліджуваних сортозразків - 41,1- 46,9 г. За цим показником сортозразок 2/16 істотно поступався стандарту, а селекційний номер 17/16 істотно перевищував його впродовж обох років досліджень. Суттєвої різниці між показниками сортозразків 10/16, 23/16 і 29/16 і стандарту не спостерігалось.