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环境对水稻花时的影响和花时调查统计方法的改进

来源：花匠小妙招时间：2024-12-18 20:39

摘要：

花时在杂交稻制种中有着关键作用。明确环境对水稻花时的影响，选择合适的花时调查统计方法可以加快对花时性状的研究。本文以早花时突变体eft、正常花时材料日本晴（NIP）以及构建的eft/NIP重组自交系群体为材料，通过分期播种亲本，明确了温度和光照对花时的影响规律；提出了一种以亲本为标准的改进的水稻花时调查和统计方法。基于该改进的花时调查和统计方法，能有效减弱环境因素对花时性状的影响，可将样本间的花时误差由原来的0~30 min缩减至0~5 min，为水稻花时性状的遗传研究提供较为精确的数据。

关键词: 水稻, 花时, 温度, 日长, 调查统计方法

Abstract:

Rice flowering time is a critical factor for seed production in hybrid rice. The research of rice flowering time could be promoted by clarification the influence of environment and utilization appropriate investigation and statistical method. In the present study, the regularity of flowering time changing with temperature and day length was clarified though sowing parents by stages. Simultaneously, an effective investigation and statistical method was firstly established to investigate rice flowering time in the field no matter how the environment changes, based on a recombinant inbred line population including 184 lines from the cross between Nipponbare and the early flowering time mutant eft. The improved method could effectively mitigate the influence of environmental on flowering time and reduce the error of flowering time from 0~30 min to 0~5 min. The method may provide more accurate data to study rice flowering time traits in the future.

Key words: rice, flowering time, temperature, day length, investigation and statistical methods

中图分类号:

S511