摘要
光合作用是决定作物产量的重要因素。光合气体交换参数则是表示植物光合能力的常用指标。在盆栽条件下,利用LI-6400光合仪测定了162份大豆品种(系)R6时期的光合速率、气孔导度、胞间CO2浓度和蒸腾速率等光合气体交换参数。参数间的相关分析表明4个光合参数间存在极显著正相关关系。参数的变异特点分析表明,4个光合气体交换参数在品种(系)间存在极显著的遗传差异,变幅较大,且呈现典型的数量性状分布特点,育种潜力较大。以光合速率作为选择指标,筛选了15份优异种质,为今后高光效育种提供了基础材料。
Photosynthesis plays an important role in determining crop ＇ s yield. Photosynthetic gas- exchange parameters have been widely used to reflect the photosynthetic capacity of plant. In the present study, pot experiment was conducted to evaluate 162 soybean varieties （lines） for four gas- exchange parameters, photosynthetic rate, stomatal conductance, internal CO2 concentration and transpiration rate,at R6 development stage with portable photosynthesis systems （LI-6400）. The results showed ： （ i ） the four gas- exchange parameters correlated with each other positively and significantly ; （ ii ） the gas- exchange parameters demonstrated significant difference, wide variation range and quantitative distribution among varieties （hnes）, suggesting a larger potential for breeding improvement of these parameters;（ iii ） fifteen varieties （lines） with high photosynthetic rate were selected ,which could be used as base materials for future high photosynthetic efficiency breeding.
出处
《大豆科学》
CAS
CSCD
北大核心
2009年第5期801-805,共5页
Soybean Science
基金
国家高技术研究发展计划资助项目(2006AA10Z1C1)
国家重点基础研究发展规划资助项目(2004CB117206)
关键词
大豆
光合作用
气体交换参数
变异
高光效育种
Soybean
Photosynthesis
Gas- exchange parameters
Variation
High photosynthetic efficiency breeding
