草地学报

›› 2008, Vol. 16 ›› Issue (1): 100-102.DOI: 10.11733/j.issn.1007-0435.2008.01.021

• 研究报告 • 上一篇    下一篇

温度胁迫对苜蓿和柱花草光合作用及N还原的影响

莫亿伟, 郭振飞   

  1. 华南农业大学生命科学学院草业生物技术实验室, 华南农业大学生命科学学院草业生物技术实验室, 广东, 广州, 510642
  • 收稿日期:2007-11-30 修回日期:2007-12-12 出版日期:2008-02-15 发布日期:2008-02-15
  • 作者简介:莫亿伟(1971- ),男,广西人,博士研究生

The Effects of Temperature Stress on Photosynthesis and Nitrogen Reduction of Alfalfa and Guyana Stylosanthes

MO Yi-wei, GUO Zhen-fei   

  1. Biotechnology Laboratory of Turfgrass and Forages,College of Life Science,South China Agricultural University, Guangzhou, Guangdong Province, 510642, China
  • Received:2007-11-30 Revised:2007-12-12 Online:2008-02-15 Published:2008-02-15

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摘要： 苜蓿(Medicago sativa L.)和柱花草(Stylosant hesgui anensis(Aubl.)Sw.)均为优质豆科牧草,前者耐寒但不耐热,主要种植在北方地区,而后者耐热不耐寒,主要种植在热带亚热带地区。为探讨这两种牧草对温度胁迫的适应机制,本文从温度胁迫对其伤害、渗透调节物质含量的变化光合作用、N还原等方面开展了研究。

关键词: 苜蓿, 柱花草, 硝酸还原酶, 光合作用, ATP合酶, 蔗糖合酶

Abstract: Alfalfa(Medicago sativa L.) and Guyana stylosanthes(Stylosanthes guianensis(Aubl.) Sw.) are two important forage legumes with high feeding quality.Alfalfa is cold-tolerant,but heat-sensitive,while Guyana stylosanthes is heat-tolerant,but cold-sensitive.In order to explore the adaptation mechanisms to temperature stress,the physiological responses of sugars metabolism,photosynthesis,and nitrogen reduction of these two forage legumes under low and high temperature stresses were comparatively studied by this paper.

Key words: Alfalfa, Guyana stylosanthes, Nitrate reductase, Photosynthesis, ATP synthase, Sucrose synthase

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