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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fu, Yuming, Li, HongYan, Yu, Juan, Liu, Hui, Cao, ZeYu, Manukovsky N. S., Liu, Hui
Заглавие : Interaction effects of light intensity and nitrogen concentration on growth, photosynthetic characteristics and quality of lettuce (Lactuca sativa L. Var. youmaicai)
Колич.характеристики :7 с
Коллективы : Ministry of Science and Technology of China [2013AA103004]; National Natural Science Foundation of China [31301706]
Место публикации : Sci. Hortic.: ELSEVIER SCIENCE BV, 2017. - Vol. 214. - С. 51-57. - ISSN 0304-4238, DOI 10.1016/j.scienta.2016.11.020. - ISSN 1879-1018(eISSN)
Примечания : Cited References:43. - This work was supported by the Ministry of Science and Technology of China (No. 2013AA103004) and National Natural Science Foundation of China (No. 31301706).
Предметные рубрики: WATER-USE EFFICIENCY
LIFE-SUPPORT-SYSTEM
GAS-EXCHANGE
BLUE-LIGHT
Ключевые слова (''Своб.индексиров.''): light intensity--nitrogen concentration--vitamin c--vegetable quality--facility agriculture
Аннотация: Light intensity and nitrogen concentration of nutrient solution are considered crucial for the contents of vitamin C and nitrate in cultivated leaf vegetables. We here investigated the effects of various combinations of light intensity (60,140 and 220 mu mol m(-2) s(-1)) and nitrogen concentration (7,15 and 23 mmol L-1) of the solution on the growth, photosynthetic characteristics, vitamin C and nitrate content of lettuce. Our results demonstrate that the lettuce had the largest dry biomass at the high illumination of 220 mu mol m(-2) s(-1) and low nitrogen of 7 mmol L-1. The higher light and low nitrogen also contributed to the accumulation of vitamin C and decrease of nitrate in lettuce leaves. The effect of nitrogen supply on chlorophyll concentrations was more efficient under low light than high illumination. Our results reveal that there was an obvious interaction between light intensity and nitrogen available for the photosynthesis, yield and quality of lettuce. This study provides valuable insights into the combinational regulation of light intensity and nitrogen supply for improving growth and nutritional quality of vegetables grown in greenhouse and plant factory. (C) 2016 Elsevier B.V. All rights reserved.
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