Silicon fertilization modulates 2-acetyl-1-pyrroline content, yield formation and grain quality of aromatic rice
文献类型: 外文期刊
第一作者: Mo, Zhaowen
作者: Mo, Zhaowen;Lei, Shun;Ashraf, Umair;Li, Yuan;Pan, Shenggang;Duan, Meiyang;Tian, Hua;Tang, Xiangru;Mo, Zhaowen;Lei, Shun;Ashraf, Umair;Pan, Shenggang;Duan, Meiyang;Tian, Hua;Tang, Xiangru;Khan, Imran
作者机构:
关键词: Fragrant rice;Growth;Praline;2-Acetyl-1-pyrroline;Silicon;Yield
期刊名称:JOURNAL OF CEREAL SCIENCE ( 影响因子:3.616; 五年影响因子:3.891 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Present study aimed to assess silicon (Si) mediated yield, grain quality and regulations in 2-acetyl-1-pyrroline accumulation (2-AP) in aromatic rice. Four different levels of Si at 15, 30, 45 and 60 mg kg(-1) were applied to two aromatic rice cultivars i.e., Nongxiang 18 and Meixiangzhan 2, while pots without Si were served as control (CK). Results revealed that Si fertilization improved 2-AP, Si and proline contents in leaves and grains as well as activities of proline dehydrogenase (PRODH) and net photosynthetic rates (Pn) (in leaves) while interfered with total N contents in leaves and grains. Moreover, leaves N and proline contents, and net photosynthetic rates (Pn) were decreased with plant age i.e., tillering > flowering > maturity while PRODH activities and Si contents were highest at flowering and maturity stages, respectively and minimum at tillering stage. Furthermore, growth, yield and quality components were also improved by Si application but results were not consistent regarding grain quality for both rice cultivars. Further, Si contents in leaves have significant positive relations (r = 0.3974, P < 0.05) with grain 2-AP contents at flowering stage. Hence, Si proved better for both rice cultivars whereas 2-AP contents were higher for Meixiangzhan 2 than Nongxiang 18. (C) 2017 Elsevier Ltd. All rights reserved.
分类号: S4
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