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作物学报

作物学报 ›› 1992, Vol. 18 ›› Issue (05): 397-400.

• 研究论文 • 上一篇    

低温对玉米光合作用、超氧物歧化酶活性和籽粒产量的影响

张毅;顾慰连;戴俊英   

  1. 沈阳农业大学 沈阳 北京农业大学农业系统工程研究室
  • 收稿日期:1991-05-26 修回日期:1992-01-20 出版日期:1992-09-12 网络出版日期:1992-09-12

Effect of Low Temperature on Photosynthesis,Activity of Superoxide Dismutase and Kernel Yield of Maize

Zhang Yi;Gu Weilian;Dai Junying   

  1. Shenyang Agricultural University,Shenyang 110161
  • Received:1991-05-26 Revised:1992-01-20 Published:1992-09-12 Published online:1992-09-12

PDF

1087

被引次数

48

摘要： 玉米在孕穗期和灌浆期,尤其是在孕穗期遇低温逆境会导致光合速率下降,光合有效叶面积降低,叶片和雌穗(或籽粒)超氧物歧化酶(SOD)活性下降、丙二醛含量剧增和相对电导率提高,造成低温冷害。孕穗期低温处理主要抑制了雌穗分化和发育,减少了穗粒数,灌浆期低温逆境主要影响了籽粒灌浆,致使百粒重下降,引起产量降低。

关键词: 低温逆境,玉米,籽粒产量,光合作用 SOD活性

Abstract: Chilling stress (10℃) at booting and filling stages, especially at booting stagedicreased photosynthetic rate and leaf area per plant, lowered SOD activity and in-creased MDA content and relative conductivity of leaf and ear (or kernel) in maize,thus causing chilling injury. Low temperature at boot

Key words: Chilling stress, Maize, kernel yield, Photosynthesis, SOD activity

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