摘要
在人工控制条件下研究了光照时间和温度对农垦58S及以此为基因源转育的其他粳型光敏不育系育性的影响。结果表明,供试粳型光敏不育系的育性受光照时间和温度的双重影响,在15.0h光长与29.6℃平均温度(最高与最低温度分别为33.0℃与28.0℃)的长光照高温条件下,自交结实率为0或接近于0;在12.0h光长与23.6℃平均温度(27.0/22.0℃)的短光照低温条件下,自交结实率较高;在长光低温(15.0h/23.6℃)和短光高温(12.0h/29.6℃)下,育性出现不同程度的转变。不同材料的育性对光温反应存在着差异,提示遗传背景对育性表达可能有重要作用。本研究结果有助于对自然条件下光敏不育系夏季制种纯度不高而秋季警种产量又较低的现象在理论上给予合理的解释。
The effects of photoperiod and temperature on fertility of Nongken 58S and its derivedPGMSRs (subsp. japonica) were studied in artificially controlled condition. The results indicated thatboth photoperiod and temperature affected PGMSRs' fertility. The PGMSRs were sterile or nearly ster-ile in the treatment combination with long photoperiod (15. 0h) and high temperature (29. 6℃), andtheir fertility was higher in the treatment combination with short photoperiod (12. 0h) and low tempera-ture (23. 6℃). The alternation in the fertility of PGMSRs occurred under the treatment combinations with15. 0h/ 23. 6℃ and 12. 0h/ 29. 6℃ in growth chambers. The influence of genetic background onPGMSRs' fertility was also observed. The experiment result will supply a base of knowledge to explainwhy the sterility of PGMSRs was unstable in summer and their fertility was not high enough in autumn inthe field.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1991年第2期56-60,共5页
Chinese Journal of Rice Science
基金
农业部国家自然科学基金委员会
浙江省科委
关键词
光敏核不育
水稻
光温反应
育性
Photoperiod Sensitive Genic Male Sterile Rice (PGMSR)
Photoperiod
Temperature
Fertility
