کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8055736 | 1519910 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of nitrogen source and concentrations on wheat growth and production inside “Lunar Palace-1”
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی هوافضا
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چکیده انگلیسی
Minimizing nitrogen (N) consumption and maximizing crop productivity are major challenges to growing plants in Bioregenerative Life Support System (BLSS) for future long-term space mission. Plants cultivated in the controlled environments are sensitive to the low recyclable N (such as from the urine). The purpose of this study is to investigate the effects of nitrogen fertilizer (NH4+-N and NO3â-N) disturbance on growth, photosynthetic efficiency, antioxidant defence systems and biomass yield and quality of wheat (Triticum aestivum L.) cultivars during ontogenesis. Experiments were divided into 4 controlled groups,â
: NO3â-N: NH4+-Nâ¯=â¯7:1â¯mmolâ¯Lâ1; â
¡: NO3â-N: NH4+-Nâ¯=â¯14:0.5â¯mmolâ¯Lâ1; â
¢: NO3â-N: NH4+-Nâ¯=â¯7:0.5â¯mmolâ¯Lâ1 and CK: NO3â-N: NH4+-Nâ¯=â¯14:1â¯mmolâ¯Lâ1, and other salt concentrations were the same. The results showed that heading and flowering stages in spring wheat are sensitive to low N concentration, especially NO3â-N in group â
and â
¢. NO3â is better to root growth than to shoot growth. The plants were spindling and the output was lower 21.3% when spring wheat was in low N concentration solution. Meanwhile, photosynthetic rate of low N concentrations is worse than that of CK. The soluble sugar content of the edible part of wheat plants is influenced with NO3â: NH4+ ratio. In addition, when N concentration was lowest in group â
¢, the lignin content decreased to 2.58%, which was more beneficial to recycle substances in the processes of the environment regeneration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 144, March 2018, Pages 371-379
Journal: Acta Astronautica - Volume 144, March 2018, Pages 371-379
نویسندگان
Chen Dong, Zhengpei Chu, Minjuan Wang, Youcai Qin, Zhihao Yi, Hong Liu, Yuming Fu,