doi:10.15933/j.cnki.1004-3268.2018.03.003

Abstract

摘要： 本试验以玉米品种K玉8号为材料，研究防虫网隔离对玉米花粉扩散的影响，以期为生产上玉米小面积制种或育种过程中防虫网孔径及高度的选择提供理论依据和技术支持。结果表明：花粉扩散观察区的异交结实率随着离花粉供体区距离的增大而逐渐减小，相同距离不同方位的玉米异交结实率差异较大，主流风下风向玉米异交结实率显著高于主流风上风向。分别采用孔径为0.106、0.058、0.042 mm的防虫网隔离明显降低了玉米花粉的扩散频率，孔径为0.058 mm、0.042 mm的防虫网隔离效果差异较小，但均好于孔径为0.106 mm的防虫网。3.5 m和4.0 m高的防虫网隔离效果相近，但均好于3.0 m高的防虫网，因此在生产上推荐使用3.5 m高、孔径为0.058mm的防虫网。

关键词: 玉米, 异交结实率, 防虫网, 花粉扩散

CLC Number:

S513

杨光华，王学林，曹明，柯用春，杨小锋. 防虫网隔离对玉米花粉扩散的影响[J]. 河南农业科学, 2018, 47(3): 14-18.

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防虫网隔离对玉米花粉扩散的影响

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