在自然条件下,水稻花粉的寿命是短暂的,一般成熟的花粉离开花药后,如果得不到萌发的条件,大约5—10分钟萌发力就大大降低了,经15分钟后,花粉的生活力几乎全部丧失。因此,在杂交水稻制种时,当两个亲本的花期、花时不遇,相差几天,甚至几小时,母本就得不到足够的花粉,从而导致结实率很低,产量不高。在生产实践中,为了解决这个问题,曾采用过父本分期播种移栽、母本剥苞、割叶或使用赤霉素等措施,收到了一定的效果,但仍未能从根本上解决问题。我们从1982年起开始研究水稻花粉的生活力及其贮藏条件,目的在于寻找能使花粉安全贮藏一年以上的贮藏条件及其技术,现将研究结果介绍如下: Under natural conditions, the life expectancy of rice pollen is short. After the mature pollen leaves the anthers, the germination force is greatly reduced after about 5-10 minutes. After 15 minutes, pollen viability Almost all lost. Therefore, when hybrid rice is planted, when the two parents do not have the flowering and flowering time, a few days or even a few hours, the female parent can not get enough pollen, resulting in low seed setting rate and low yield. In production practice, in order to solve this problem, we have adopted some measures such as transplanting sow by staging by stages, stripping the female parent, cutting the leaves or using gibberellin, etc., but we have not yet been able to solve the problem fundamentally . We began to study the viability of rice pollen and its storage conditions since 1982 with the aim of finding storage conditions and techniques for safe storage of pollen for more than a year. The results of the study are as follows: