播种期对杂交稻种子纯度海南种植鉴定结果的影响

Effects of Sowing Time on Results of Purity of Hybrid Rice Seeds by Field Identification in Hainan

通过比较不同播种时期杂交水稻种子样品在海南种植鉴定的农艺性状表现,发现播始历期、株高、结实率等主要性状均表现出不同程度的变化,且部分组合与其亲本的变化幅度不同,从而影响鉴定的准确性。根据品种特性,确定最佳播种时期,并采用合理的栽培与管理技术,是提高杂交水稻种子纯度种植鉴定结果准确性的关键。

It was found that there were changes to some extent in the main characters of the days from seeding to initial heading, plant height and seed setting rate when the seeds of the tested hybrid rice combinations and their parents were sowed at different time in Hainan for the seed purity identification, and the changing extent was different between some hybrids and their parents, which would affect the accuracy of purity identification. Based on the characteristics of different hybrids and their parents, it was very important to increase the accuracy of field purity identification in Hainan to determine optimal sowing time and adopt suitable techniques in cultural management.