摘要
９７个美洲黑杨无性系经苗期测定结果表明：苗高、地径的生长，表现出无性系间的显著差异，具有较丰富的遗传变异基础，广义遗传力分别为８０．２３％和７２．９９％，二性状间表现出极显著的遗传相关。以苗高的ＬＳＤ多重比较，选择出生长最好的４１个无性系，其苗期生长水平超过或相当于中林２３杨；用苗高和地径的综合指数选择，淘汰生长最差的２９个无性系，保留的６８个无性系作为育种资源保存。
Nursery testing of 97 cottonwood clones was conducted. The results showed thatthe difference of height and diameter among clones were significant,genetic variation was varyrich, the broad-sense heritability of height and diameter were 80.23%and 72.99% respectively,the genetic correlation coefficient between two characters was extremely significant. The best 41clones were selected by LSD multiple comparisons of height. Seedling growth of the clones wasbetter than that of W-23, or same as. According to index selection of height and diameter, theworst 29 clones were sifted out and the other 68 clones used as breeding resouces were conserved.
出处
《山东林业科技》
北大核心
1996年第2期13-16,共4页
Journal of Shandong Forestry Science and Technology
关键词
美洲黑杨
引种
遗传相关
无性系
选择
Cottonwood,Introduction,Genetic correlation,Nursery testing, Clones selection
