供磷水平对不同基因型玉米几个抗逆生理指标的影响  

Effects of phosphorus supply on several stress physiological index of eight genotypic corn varieties

作　　者：唐致刚[1] 张恩和[2] 黄鹏[2] 

机构地区：[1]甘肃农业大学基础科学系,甘肃兰州730070 [2]甘肃农业大学农学院,甘肃兰州730070

出　　处：《草业科学》2002年第4期56-58,共3页Pratacultural Science

基　　金：甘肃省自然科学基金资助项目 (ZS991 A2 1 0 3 0 N)

摘　　要：对 8个基因型不同的玉米杂交种 ,在不同供磷水平下的籽粒产量、叶片脯氨酸、丙二醛 (MDA)和质膜透性进行了研究。试验得出 ,施磷对玉米的经济产量影响很明显 ,其中中单 2号在高磷水平下产量比不供磷增加 5 0 .78% ,DK6 5 6增加 2 3.35 % ,新玉 4号增加 16 .0 % ,DK74 3增加 6 .0 8%。不同基因型玉米叶片中脯氨酸含量差异较明显。在 3个供磷水平下 ,供试 8个品种脯氨酸含量由大到小依次为 :DK74 3、中单 2号、户单 1号、豫玉 2 2、DK6 5 6、酒单 2号、石玉 90 5、新玉 4号。不同基因型玉米叶片中脯氨酸、MDA和膜质透性均随施磷量的增加而升高。随施磷量的增加 ,DK74 3、中单 2号、户单 1号叶片脯氨酸、丙二醛 (MDA)含量和膜质透性增加最为明显 ,其次为豫玉 2 2、DK6 5 6、酒单 2号 ,石玉 90 5、新玉By field experiments, seed yield, leaf proline(Pro),MDA and cell membrane permeability were studied in 8 different genotype corn varieties. The results showed that phosphorus(P) application could increase seed yield of corn, for example,the seed yield of ZD 2,DK656,XY4 and DK743 was 50 78%,16 0% and 6 08%,up on that of the P non applying control,respectively.There were significant differences of leaf Pro among different genotype corn varieties;the order of corn leaf Pro amount was DK743,ZD2,HD1,YY22, DK656,JD2,SY905 and XY4; Pro,MDA and cell membrane permeability of different genotype corn varieties were increased by more P applying;Among them,DK743, ZD2, HD1 got higher increase, followed by YY22, DK656, JD2,but the other two varieties, XY2 and SY 905, showed a feeblish stress resistance.

关 键 词：磷 基因型 玉米 抗逆 生理指标 脯氨酸 丙二醛 质膜透性 

分 类 号：S513[农业科学—作物学] Q945.7[生物学—植物学]