CAJ | 학술논문

研究了4个杂交粳稻不育系、15个恢复系的开花习性,结果表明:不育系的开花历期平均为7.0 d,而恢复系的开花历期平均2.5 d,二者差别达3.5 d;不育系的午前花率平均为58.8%,而恢复系的午前花率平均为73.9%;多数恢复系的开花高峰出现在开花后第2～3 d,而不育系却出现在开花后4～5 d(中作59A除外).除不育系3A外,其它不育系的日开花高峰均晚于恢复系.不同的恢复系之间在开花习性上也存在差异.研究粳稻不育系和恢复系的开花习性,能够有效调控其亲本的花期、花时,提高制种产量.
연구료4개잡교갱도불육계、15개회복계적개화습성,결과표명:불육계적개화력기평균위7.0 d,이회복계적개화력기평균2.5 d,이자차별체3.5 d;불육계적오전화솔평균위58.8%,이회복계적오전화솔평균위73.9%;다수회복계적개화고봉출현재개화후제2～3 d,이불육계각출현재개화후4～5 d(중작59A제외).제불육계3A외,기타불육계적일개화고봉균만우회복계.불동적회복계지간재개화습성상야존재차이.연구갱도불육계화회복계적개화습성,능구유효조공기친본적화기、화시,제고제충산량.
The flowering habit of 4 sterile lines and 15 restorer lines of hybrid japonica rice was observed to improve seed yield by effectively adjusting parents' flowering stage and duration . The results showed that the flowering duration of sterile lines and restorer lines was 7.0 d and 2.5 d and the average forenoon flowering rate of sterile lines and restorer lines was 58.8% and 73.9% respectively, and the flowering peak of most restorer lines and sterile lines (except Zhongzuo 59A) was 2～3 d and 4～5 d after flowering, the daily flowering peak of sterile lines(except 3A) was later than restorer lines, and there was difference in flowering habit between different restorer lines.