摘要
对水稻亚种间杂种再生力与头季稻主要农艺性状的通径分析表明,出穗期和有效穗数对杂种再生力有极显著的直接作用,出穗期的直接作用最大。每穗粒数通过有效穗数间接影响杂种再生力。亚种间杂种的超亲晚熟和超亲优势普遍存在并呈极显著正相关。讨论了作为复合性状的再生力的遗传基础的复杂性及其改良措施。
Path analysis was used to assess the relation between ratooning ability of intersubspecific hy- brids and agronomic characters of mother plant. Days to heading and effective panicles directly affected ratooning ability more significantly. Number of grain per panicle indirectly influenced ratooning ability through No. of effective panicles. The heritable complexity and breeding strategy for rice ratooning were dis- cussed.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1992年第4期151-154,共4页
Chinese Journal of Rice Science
关键词
杂种
再生
农艺性状
早稻
水稻
Intersubspecific hybrid
Oryza sativa
Path analysis
Ratooning ability
