摘要
以野生大豆和栽培大豆为材料,通过测定大豆叶片的光合和荧光参数,分析了短期NaCl胁迫下野生大豆和栽培大豆光合功能的变化。结果表明:当NaCl浓度大于40mmol·L-1时,大豆叶片的光合速率开始下降,而其羧化效率的下降可能是导致光合速率下降的一个主要因素;此外,NaCl短期胁迫下,大豆叶片光系统II的受体侧受到了较重伤害。野生大豆能够维持相对较高的羧化效率和光系统II活性,对NaCl胁迫有较强的抗性,是改良和提高栽培大豆抗逆性的优良资源。
Changes of photosynthesis in leaves of Glycine soja and Glycine max under short-term NaCI stress were studied by techniques of gas exchange and chlorophyll fluorescence quenching. The results showed that when NaGl concentration reached 40 mmol· L^-1 , the decrease of the CO2 assimilation rate was a major factor for the decrease of the photosynthesis in the soybean leaves after salt stress,and the PSII acceptor was damaged. The higher tolerance to short-term NaCl stress in Glycine soja might be due to its higher CO2 assimilation rate and higher PSⅡ activity. In conclusion, Glycine soja are good resources to improve the stress toleranee of Glycne max.
出处
《大豆科学》
CAS
CSCD
北大核心
2009年第2期239-242,共4页
Soybean Science
基金
滨州学院青年人才创新工程科研基金资助项目(BZXYQNLG200719)
