摘要
为分析苜蓿Medicagosativa主要性状间关系,在连续3年使用常规方法调查与测定国内外数种苜蓿品种主要性状基础上,采用灰色关联度分析方法,对17个苜蓿品种主要性状进行了分析,试验结果表明,在苜蓿主要农艺性状中,对单株产量影响最大的是株高,其次是生长速度、枝条直径,最小的是枝条密度。在苜蓿品质性状与农艺性状间的相互关系上,对品质性状影响较大的农艺性状有生长速度、枝条直径、枝条密度。因此,在高产育种中,应选择植株高大、生长速度较快的类型,在以品质性状为育种目标时,注重对生长速度、枝条直径、枝条密度几个性状的选择与改良。
Seventeen alfalfa varieties were used to analyze the relationship among their characters with grey relate degree analysis based on the investigation for 3 years. The result showed that the plant height was the most effective factor affecting the yield, and followed by the growth speed, branch diameter and branch number. The effective factor affecting the quality was the growth speed, branch diameter and branch number. The plant height and growth speed were the key characters for the breeding with purpose of high yield. As for high quality breeding, the growth speed, branch diameter and branch number were the key characters.
出处
《草业科学》
CAS
CSCD
北大核心
2009年第10期85-88,共4页
Pratacultural Science
基金
国家重点基础研究发展计划(973计划)子课题:牧草
乡土草优异种质创新与利用(2007CB108906)
关键词
苜蓿
农艺性状
品质性状
灰色关联度
alfalfa
agronomic character
quality character
grey association degree
