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8902s与安农s-1杂交,每个F_2个体被一分为四。在按长日/高、低温与短日/高、低温设置的人工气候箱里栽培,考察分株苗育性、个体的光周期效应和温度效应。结果表明:①育性分布随所用育性指标而截然不同。82％的个体育性程度不同地随光周期条件变化,光周期效应值大于10％;有近半数的个体在某种条件下小穗完全不育,其中1/3花粉也完全败育;有6.5％的个体在4种环境中花粉和小穗都不育。②约1％属光敏类型个体,在两种温度下以花粉或小穗不育率为指标的光周期效应值分别大于30％或10％,而且光周期效应大于温度效应。 据作者推算,对这种F_2群体来说,长日照下在较宽温度区间表现稳定雄性不育并有较强光敏特性个体的频率不大于0.07％。
8902s crossed with Annong s-1, and each F_2 individual was split into four. In the long day / high, low temperature and short day / high and low temperature set artificial climate chamber cultivation, study ramets nursery, individual photoperiod and temperature effects. The results showed that: ① fertility distribution with the use of fertility indicators and completely different. 82% of the different degrees of physical activity with the photoperiod conditions change, the photoperiodic effect is greater than 10%; nearly half of the individuals under some conditions spikelet is completely sterile, of which 1/3 of the pollen also aborted; there 6.5% of the individuals pollen and spikelets were sterile in all four environments. ② About 1% of the individuals with light-sensitive type had photoperiodic effects of more than 30% or 10% at pollen or spikelet index at two temperatures respectively, and the photoperiodic effect was greater than the temperature effect. According to the authors’ calculations, the frequencies of individuals with stable male sterility and strong photosensitivity in long-term exposure to long-day sunlight were not more than 0.07% for the F 2 population.