摘要
1987年在沙县、福州分期播种湖北光敏核不育水稻(HPGMR)农垦58,5月下旬至10月中旬均可连续抽穗.3月10日(x=10)至6月30日(x=132)期间播种,至抽穗天数(y)可用回归方程 y=108.5-0.36x 估计.观察到可育—不育—可育的育性转变.不育—可育转变的临界日期基本稳定在8月10日左右.可育向不育转变的临界日期由于春末夏初天气多变、低温阴雨的影响,依地点、年份而变化不定.稳定不育持续期约为7月22日至8月10日.
HPGMR Nongken 58 was sown from March to Avip,1987 at two places of Shaxian and Fuzhou,Fujian.It headed continuously from late May to mid October.A linear regression equation,y=108.5-0.36x,can be used to estimate the days of sowing to heading (y)when seeds were sown from March 10 (x=10) to June 30 (x=132).The critical date of fertility transformation from complete male sterility to recorered fertility was August 10,and that from fertility to complete sterility varied due to the influence of greatly changable climate factors during the end of spring and the beginning of summer.The complete sterile stage lasted about 20 days (from July 22 to August 10).
关键词
水稻
光敏核不育
生育期
育性
rice
photoperiod-sensitive genic male sterile
critical date
completely sterile stage
