不同水分梯度下玉米不同基因型品种抗旱性及收获指数研究.doc
上传者：可卿
2022-07-15 02:26:03上传
DOC文件
18 KB
不同水分梯度下玉米不同基因型品种抗旱性及收获指数研究
樊修武 池宝亮 黄学芳 摘要 在4个不同水分梯度下对17个不同基因型玉米品种的产量、抗旱指数和收获指数进行了研究,结果表明:不同水分梯度间产量差异达到显著水平(P<0.05);在雨养条件下(耗水325.6 mm),农大108、中玉9号和东单60等3个品种的产量均值较其他14个品种平均值高980.2 kg/hm2,增产率为27.5%;在耗水363.6、421.6、469.1 mm条件下,先玉335和郑单958等2个基因型品种产量均值较其他15个品种分别高17.31%、22.17%和18.25%。各基因型品种的抗旱指数有明显差异,不同水分梯度下的抗旱指数与雨养条件下的产量水平紧密相关。先玉335的抗旱指数虽然处于中等水平,但由于其丰产性和适应性好,生产上应用广泛,由此证明:抗旱指数达到中等水平时,既有一定的抗旱性亦有较好丰产性,极端水分条件下的抗旱性没有生产意义,同时先玉335的收获指数可达到60%左右。在研究的17个品种中为最高,说明其光合同化物转化能力强。
关键词 玉米;水分梯度;基因型;抗旱指数;收获指数
中图分类号 S513;Q945.17 文献标识码 A 文章编号 1007-5739(2011)21-0057-02
Study on Drought Resistance and Harvest Index of Different Genetype Corn Varieties under Different Moisture Gradient
FAN Xiu-wu 1 CHI Bao-liang 2 HUANG Xue-fang 2
(1 Institute of Crop Science,Shanxi Academy of Agricultural Sciences,Taiyuan Shanxi 030032; 2 Research Centre of Arid Farming,Shanxi Academy of Agricultural Sciences)
Abstract The study focused on yield,drought resistance and harvest index of 17 genetype corn under four moisture content gradient. The results showed that:The yield variance was significant under different moisture content gradient(P<0.05);In rainy condition(water cost:325.6mm),the mean yields of Nongda 108,Zhongyu 9 and Dongdan 60 were higher than the other 14 genetypes,reached 980.2 kg/hm2,the rate of growth was 27.5%;The mean yields of Xianyu 335 and Zhengdan 958 were higher than the o
樊修武 池宝亮 黄学芳 摘要 在4个不同水分梯度下对17个不同基因型玉米品种的产量、抗旱指数和收获指数进行了研究,结果表明:不同水分梯度间产量差异达到显著水平(P<0.05);在雨养条件下(耗水325.6 mm),农大108、中玉9号和东单60等3个品种的产量均值较其他14个品种平均值高980.2 kg/hm2,增产率为27.5%;在耗水363.6、421.6、469.1 mm条件下,先玉335和郑单958等2个基因型品种产量均值较其他15个品种分别高17.31%、22.17%和18.25%。各基因型品种的抗旱指数有明显差异,不同水分梯度下的抗旱指数与雨养条件下的产量水平紧密相关。先玉335的抗旱指数虽然处于中等水平,但由于其丰产性和适应性好,生产上应用广泛,由此证明:抗旱指数达到中等水平时,既有一定的抗旱性亦有较好丰产性,极端水分条件下的抗旱性没有生产意义,同时先玉335的收获指数可达到60%左右。在研究的17个品种中为最高,说明其光合同化物转化能力强。
关键词 玉米;水分梯度;基因型;抗旱指数;收获指数
中图分类号 S513;Q945.17 文献标识码 A 文章编号 1007-5739(2011)21-0057-02
Study on Drought Resistance and Harvest Index of Different Genetype Corn Varieties under Different Moisture Gradient
FAN Xiu-wu 1 CHI Bao-liang 2 HUANG Xue-fang 2
(1 Institute of Crop Science,Shanxi Academy of Agricultural Sciences,Taiyuan Shanxi 030032; 2 Research Centre of Arid Farming,Shanxi Academy of Agricultural Sciences)
Abstract The study focused on yield,drought resistance and harvest index of 17 genetype corn under four moisture content gradient. The results showed that:The yield variance was significant under different moisture content gradient(P<0.05);In rainy condition(water cost:325.6mm),the mean yields of Nongda 108,Zhongyu 9 and Dongdan 60 were higher than the other 14 genetypes,reached 980.2 kg/hm2,the rate of growth was 27.5%;The mean yields of Xianyu 335 and Zhengdan 958 were higher than the o
不同水分梯度下玉米不同基因型品种抗旱性及收获指数研究
