摘要
通过对13个辽宁省新育成品种产量结构及穗部性状的研究表明 :高产品种与低产品种的主要差别在于穗粒数、株穗数、结实率、穗长、着粒密度 ,株高和千粒重差异不明显。降低株穗数、增加穗粒数是高产品种获取高产的关键。育种上在注重穗粒数和一次枝梗粒数的同时 ,应把二次枝梗粒数和着粒密度作为重要的选择指标。栽培上则应控制株穗数、增加一次枝梗粒数和着粒密度 。
The yield structure and panicle characters were studied with 13 new rice varieties cultivated in Liaoning Province. Results showed that the significant difference existed in grain number per panicle, panicle number per plant, kernel set, panicle length, grain density between high yield and low yield varieties, but plant height and 1000-grain weight showed no significant difference. The key method to get high yield is to decrease panicle number per plant and increase grain number per panicle. In rice breeding practices, it should not been only paid attention to the selection of grain number per panicle and grain number on the primary rachis-branches, but also grain number on the secondary rachis-branches and grains density on the panicle. In cultural practices, the grain number per panicle should be controlled, and the grain number on the primary rachis-branches and the grains density on the panicle should be increased, and the grain number on the secondary rachis-branches and grain number per panicle should be paid attention.
出处
《沈阳农业大学学报》
CAS
CSCD
2003年第1期8-11,共4页
Journal of Shenyang Agricultural University
