摘要
选用 12个大豆品种 (系 ) ,于大豆开花结荚期 ,分别在正常供水与水分胁迫条件下 ,研究了与抗旱性有关的 4类生理指标 ,并结合大田试验结果进行了抗旱性综合分析。结果表明 ,叶片相对含水量 (RWC)、相对电导率、净光合速率 (Pn)与超氧化物歧化酶 (SOD)活性与大豆抗旱性(DC)密切相关 ,此 4项生理指标的隶属函数加权平均值 (D值 )与抗旱系数的相关系数达极显著水平 ,表明D值可用于大豆品种的抗旱性评价与分级。
In this paper,twelve soybean varieties was selected., four physiological indexes related to drought resistance in flowering poding stage were studied in both normal and drought conditions.The results were as follows:The weighed average of subordinate function(D) values of four physiological indexes-relative water content(RWC),relative conductivity,net photosynthesis velocity (Pn) and the activity of superoxide dismutase(SOD) and drought resistance of Soybean was positively significant(r=0 877 3,P<0 01).D value could be used to the evaluation of drought resistance for soybean varieties.At last,methods of soybean breeding for high yield and drought resistance were discussed.
出处
《华北农学报》
CSCD
北大核心
2001年第3期40-45,共6页
Acta Agriculturae Boreali-Sinica
关键词
大豆
抗旱性
生理指标
综合分析
品种
Soybean
Drought resistance
Physiological index
Comprehensive analysis
