摘要
用同一株系来源的自交不亲和系材料271、211研究表明:其自交不亲和性对温度敏感,花期日均温在10～17℃范围内,自交和兄妹交亲和指数分别为0.12～0.46和0.18～0.73,在17℃左右的夏播条件下群体严格自由授粉亲和指数为0.49～0.59;花期日均温上升到21℃左右,其自交、兄妹交亲和指数则分别上升到1.22～1.46和1.49～1.78,在此温度下群体严格隔离自由授粉亲和指数高达3.10～3.83,相应杂交种制种异交率(杂种纯度)为53.4%～74.2%,而在10.9～13.9℃的秋播条件下制种,其异交率可达到82.4％～86.7％。
The study with one line derived self-incompatibile Hue No.271, 211 indicates that the self-incompatibility was sensible to temperature.Under the condition of daily average temperature ranging from 10℃to 17℃for flowering season the compatibility index were 0.12-0.46 and 0.18-0.73 for self-fertilization and sisterline fertilization, respectively, while at around 17℃ in the Summer seeding season, the compatibility index for strict self-pollenization was 0.40-0.59. When the temperature increased to 21℃ in flowering period,the compatibility indices of selfing and sistee line fertilization rose to 1.22-1.46 and 1.49-1.78 separately, and moreover, the index for complete random fertilization in the isolated environment amounted to as much as 3.10-3.83, and the hybrid composition (hybrid purity) was about 53.4%-74.2%. Nevertheless, in the Fall seeding season with the temperature at 10.9-13.9℃, the hybrid purity could reach therage of 82.4%-86.7%.
出处
《贵州农业科学》
CAS
1993年第6期1-5,共5页
Guizhou Agricultural Sciences
关键词
油菜
自交不亲和系
温度
杂交育种
Brassica napus L.
self-incompatibile line
compatibility index
temperature sensitive
hvbrid purity
