细化搜索
结果 1-10 的 13
Nutrient composition of different varieties and strains of soybeans
1983
Hafez, Youssef S.
Extract: Fifty five varieties and strains of soybeans were analyzed for protein and oil contents. Nineteen varieties and strains were selected for determining trypsin inhibitors, lipoxygenase activities, fatty acids and amino acids. The protein contents ranged from 39.03 to 51.23 gm/100 gm dry matter. The oil contents ranged from 11.96 to 21.50 gm/100 gm dry matter. High correlation between protein and oil contents was calculated. In 19 varieties and strains of soybean, trypsin defatted sample, and lipoxygenase activity ranged from 4354 to 9521 units/mg defatted sample. The correlations between lipoxygenase activity and oil content of the seeds was 41.7% between lipoxygenase activity and total unsaturated fatty acids was 26.2% and between lopoxygenase activity and linoleic acid was 56.6%. (author)
显示更多 [+] 显示较少 [-]Nutrient composition of different varieties and strains of soybeans.
1983
Hafez Youssef S.
Extract: Fifty five varieties and strains of soybeans were analyzed for protein and oil contents. Nineteen varieties and strains were selected for determining trypsin inhibitors, lipoxygenase activities, fatty acids and amino acids. The protein contents ranged from 39.03 to 51.23 gm/100 gm dry matter. The oil contents ranged from 11.96 to 21.50 gm/100 gm dry matter. High correlation between protein and oil contents was calculated. In 19 varieties and strains of soybean, trypsin defatted sample, and lipoxygenase activity ranged from 4354 to 9521 units/mg defatted sample. The correlations between lipoxygenase activity and oil content of the seeds was 41.7% between lipoxygenase activity and total unsaturated fatty acids was 26.2% and between lopoxygenase activity and linoleic acid was 56.6%. (author).
显示更多 [+] 显示较少 [-]Nutrients in foods
1983
Leveille, Gilbert A. | Zabik, Mary Ellen | Morgan, Karen J.
Abstract: A compendium of nutrient tables on a wide variety of food and food varieties are presented for nutritionists, dietitians, and food scientists. The composition (weight, and content of water, calories, macronutrients, amino acids,vitamins, and minerals, including zinc, chlorine, magnesium, iodine and manganese) per average serving portionof over 2700 foods is provided, together with the percentages of the US RDA's of protein, vitamins, and minerals that the portion provides. Specific information forusing the tables, basic nutrient facts, and guidelines concerning factors affecting nutrient availability, the reliability of the tables, and related informational considerations also are included. Tables on the caffeine andalcohol content of selected foods, and on weights and measures are appended. (wz).
显示更多 [+] 显示较少 [-]Nutrient accumulation and response of dwarf wheat varieties to nitrogen and dates of sowing.
1983
Patel M.A. | Patel C.L.
Effect of baking and frying on nutritive value of potatoes: Minerals
1983
Mondy, Nell I. | Ponnampalam, Rathy
A study assessed the effect of conventional baking and frying on the mineral content of the cortex and pith tissues of 3 varieties of potatoes (Katahdin, Chipbelle, and Rosa); the minerals considered were potassium (K), phosphorus (P), and iron (Fe). Baking reduced cortical K, P, and Fe by 10-13%, 4-21%, and 19-31%, respectively. Baking caused movement of all 3 minerals towards the interior tissues in all 3 potato varieties, with the pith increasing 14-23%, 2-9%, and 2-8% for K, P, and Fe, respectively. In contrast, frying caused a significant decrease in the levels of the 3 minerals in both cortex and pith tissues, with the greatest decrease occurring in the cortical tissue (10-45%). Hence, the mechanisms of nutrient loss differ with the 2 methods of cooking. (wz)
显示更多 [+] 显示较少 [-]The agronomy of selected vegetable crops for soilless cultivation (hydroponic system)
1983
Kromah, L. | Ragoonath, J. (Ministry of Agricilture, Lands and Food Production, Centeno (Trinidad and Tobago). Central Experiment Station)
A paper intended for farmers or extension workers. Covers the feeding methods involved in soilless culture with tables of the concentrations of major elements in a nutrient solution and the weights of pure substances required to make up the solutions. Cultural methods such as seed germination, transplanting, varieties, pollination and pruning are briefly described for tomato, cucumber, sweetpepper, eggplant, lettuce, cauliflower, cabbage and celery. Control of the major pest and disease problems: whitefly, spider mite, aphids, T.M.V., damping off, fusarium wilt, virticilium wilt and blossom end rot is outlined
显示更多 [+] 显示较少 [-]The effect of varietal type, plant population, and canopy adjustment of corn in crop yields and agronomical characters in corn and soybean intercrop [Philippines]
1983
Shereshta, S.L.
Corn variety, canopy adjustment and plant population affected grain yields of corn and soybean. The corn variety Arun produced higher grain yields (7055 and 6353 kg/ha from monoculture and intercrops, respectively) than Khumal yellow (6093 and 5132 kg/ha). Soybeans intercropped with the corn varieties yielded 869 and 722 kg/ha. When corn was intercropped, detopping at 25 days after silking did not significantly decrease corn yields but improved soybean yields by 20%. In the intercrops, high corn yields were generally associated with low soybean yields. The lower yields were attributed to shading and nutrient competition. Compared to monoculture, soybean grain yield were 54% lower in intercrops (1730 and 796 kg/ha, respectively). These lower yields were attributed to reduced numbers of pods/plant
显示更多 [+] 显示较少 [-]Screening rice varieties for deep water tolerance [India]
1983
Radhakrishnan, R. | Vergara, B.S. (Tamil Nadu Agricultural Univ., Combatore (India). Crop Physiology Dept.)
Submerge tolerance scores indicated that only TNR 1, Dhanya, and Birpak had some degree of tolerance. Submergence tolerance, therefore, does not seem to be a crucial limiting factor for varietal development in deepwater. Salt tolerance - TNR 1, Ponkambi samba, Kattuvanan, Kar paddy, Dulai Baron, Kala or Black Aman, and Ponni showed tolerance equal to that of the check variety Pokkali. Elongation ability varied from 17 to 65 cm (25 to 129% increase). TNR 1 and Ponkambi samba had maximum elongation ability. Chingair and Birpak had more elongated internodes. Chingair, Birpak, Akulu, and Perunel had profuse modal roots, which increase plant nutrient uptake. TNR 1 and Birpak had the most pronounced kneeing ability. Sarapalli samba, Aeb 368 Rep P, and Gutak flowered at the 14 hour treatment, and were considered photoperiod insensitive. All other varieties were photoperiod sensitive and had relatively long basic vegetative phase
显示更多 [+] 显示较少 [-]Influence of osmotic pressure over the blossom end rot of tomato (Lycopersicum esculentum)
1983
Sanchez Conde, M.P. (Consejo Superior de Investigaciones Cientificas, Madrid (Spain). Instituto de Edafologia y Biologia Vegetal)
It is studied the osmotic pressure influence of 0.65, 3.5 and 5.0 atm. on controlled culture with sand and nutrient solution circulating intermittent, when those osmotic pressures have been obtained adding NaCl to Hoagland and Snyder solution over the blossom end rot in Marglobe and Moneymaker tomato varieties. The osmotic pressures tested reduce the vegetable development and the yield. In the conditions which the trial is done, the Moneymaker variety is more resistant to blossom end rot than the Marglobe one. The osmotic pressure produces blossom end rot on tomato Marglobe in a proportion of 30% and 32.9% in weight. Related to number of fruits the % increases to 18.2 and 21.8 for osmotic pressures of 3.5 and 5.0 atm. on Moneymaker variety only a weight of 2.6 and 2.0% of affected vegetables are produced and the number of affected fruits is about 2.8 and 2.7%
显示更多 [+] 显示较少 [-]Influence des hautes températures des racines sur la croissance de plants de diverses variétés de melon (Cucumis melo L.). Aspects particuliers concernant la nutrition de la plante
1983
Risser, G. | Cornillon, P.
Young plants of 4 muskmelon varieties were cultivated in nutrient solution with constant root temperature between 18 °C and 34 °C and air temperature below 30 °C at two times of year : end of winter and beginning of summer. Provided root temperature was always above air temperature, muskmelorn growth was normal. Root temperature had no effect in summer but at the end of winter higher root temperature gave better growth. There were great varietal differences during this period of low total radiation. " Freeman’s cucumber " grew better than the " Charentais " varieties : " Doublon " and " Vedrantais ", when the root temperature was high ; for " Persian Small Type ", root temperatures higher than 22 °C were unfavourable. At root temperatures higher than 18 °C, total radiation was the main factor limiting muskmelon growth | De jeunes plants de 4 variétés de melon ont été cultivés en solution nutritive maintenue à diverses températures entre 18 °C et 34 °C alors que la température de l’air ambiant était inférieure à 30 °C, à 2 périodes : fin d’hiver et début d’été. Aucun effet systématique de la température racinaire n’a été observé en période estivale alors qu’en période de faible rayonnement, la croissance était d’autant meilleure que la température racinaire était plus élevée, sauf pour la variété « Persian Small Type ». De fortes différences variétales existent en effet en période de faible rayonnement global. « Freeman’s cucumber » profite mieux de l’augmentation de la température racinaire que les types « Charentais » : « Doublon » et « Védrantais », alors qu’au-dessus de 22 °C l’augmentation de la température racinaire est nuisible à la croissance de « Persian Small Type ». Dans les conditions de l’essai, le maintien d’une température racinaire supérieure à celle de l’air n’a pas entraîné d’anomalie de croissance. Au-dessus d’une température racinaire de 18 °C, le rayonnement global devient le facteur limitant essentiel de la croissance du melon
显示更多 [+] 显示较少 [-]