摘要
通过营养液水培和5%PEG(聚乙二醇)模拟干旱效应的方法,应用PFM-102植物动力学荧光仪,测定了干旱胁迫下不同基因型水稻荧光诱导动力学参数变化。研究表明,干旱胁迫下荧光诱导动力学参数F0,Fv/F0,Fv/Fm,和T1/2均下降,不同基因型品种荧光诱导动力学参数对干旱胁迫的反应程度不同;各荧光诱导动力学参数之间具有显著的相关性。认为,水稻的叶片荧光诱导动力学光合特性对干旱胁迫有着适应性反应。
The effects of drought stress on the chlorophyll fluorescence induction kinetics of rice varieties were studied by using PFM102 chlorophyll fluorometer. The results showed that chlorophyll fluorescence parameters including F0, Fv/F0, Fv/Fm, and T1/2 decreased in response to drought stress; there were obvious differences on change of chlorophyll fluorescence parameters among different genotypes; the chlorophyll fluorescence parameters were closely related each other. It was concluded that the change of photosynthetic the characteristics, i.e. the chlorophyll fluorescence parameters of F0, Fv/F0, Fv/Fm and T1/2, was the adaptation effect of rice to drought stress.
出处
《干旱地区农业研究》
CSCD
北大核心
2003年第3期123-126,共4页
Agricultural Research in the Arid Areas
基金
国家重点基础研究发展规划项目子专题(G199901170)
国家自然科学基金(39970420)
关键词
干旱胁迫
基因型
水稻
光合特性
荧光诱导动力学参数
适应性
rice (Oryza sativa L.)
chlorophyll fluorescence induction kinetics
genotypic difference
drought stress
