玉米叶片水分利用效率及其相关性状的研究

The Study on Water Use Efficiency and Concerned Traits of Maize Inbred Lines Leaves

在正常灌溉和中度水分胁迫处理条件下,测定23个玉米自交系其叶片水分利用效率,并将玉米叶片水分利用效率与生理生化、农艺学及产量形成因素等22个性状进行相关性分析。结果表明:玉米在中度水分胁迫条件下的WUE均高于正常灌溉条件下的WUE;玉米叶片水分利用效率与光合速率、蒸腾速率、气孔导度、胞间二氧化碳浓度、穗位高、雄穗分枝数、开花至吐丝间隔、秃尖长、单穗粒重、穗粒数、穗行数等性状呈显著或极显著相关关系。

Twenty three maize inbred lines were used in this research, measuring their leaves WUE on the normal irrigation condition and the moderate water stress condition, and carrying on relevant analysis between the maize WUE with the physiological biochemistry, the agronomy, the output and 22 traits. The research results showed that the maize leaf WUE under the moderate water stress condition are higher than others under the normal irrigation condition, among of 23 maize inbred lines, 444 WUE is the highest, but Mo17 WUE is the lowest; the maize leaf WUE is remarkable or extremely remarkable correlation dependence with Pn, Tr, Gs, Ci, EH, TEN, ASI, SSGW, BEL, SLN and SGND.