盛夏低温对光敏核不育水稻育性稳定性的干扰及其克服的预见性对策

1989年武汉出现了盛夏低温,受其干扰,多数湖北光敏核不育水稻(HPGHR) 育性发生了波动。本研究详尽地对武汉盛夏低温进行了统计分析,并对1947～1989年共43年的盛夏低温完整时间序列进行了最大熵谱分析。结果表明:盛夏低温是一种周期性发生的自然天气现象,类似于1989年的极强型盛夏低温约30年再现一次。本文就如何克服盛夏低温对HPGMR育性稳定性的干扰提出了相应的预见性对策。

THE INFLUENCE OF LOWER TEMPERATURE IN MID-SUMMER ON THE FERTILITY STABILITY OF HPGMR AND POSSIBLE TROUBIESHOOTING WAYS

Lower temperature in mid-summer occuered in 1989 in wuhan. The fertility of mostHubei photoperiod sensitive genic male-sterile rice(HPGMR)became unstable. A syste-maticly satistic analysis of the materials of lower temperature in mid-summer in wuhanwas carried out and the maximum entropy spectrum periodical analysis was adopted todeal with the meteorological data obtained from 43 years(1947~1989)about lowertemperature in mid-summer under continuously time sequence. The result showed thatlower temperature was a kind of natural phenomenon occuered periodicaly. The extrem-ely one occuered in 1989 is likely to appear once every 30 years. This paper providedsome relevant foreseen ways to solve the problem of the influence of lower temperaturein mid-summer on the fertility stability of HPGMR.