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利用插条水培的方法研究了柳树种间杂种及柳属与钻天柳属属间杂种 55个无性系淹水死亡时间的遗传变异情况 ,及其与插条状况、插条生根性状和插条新梢生长性状间的相关关系。柳树杂种无性系间 ,在淹水死亡时间等 12个性状上均存在极显著 (α =0 0 1)差异 ;被研究群体的 12个性状的广义遗传力达到 0 30 2～ 0 995;遗传变异系数为 7 13%～ 78 14 % ;淹水死亡时间的平均值为 33～ 6 4 6d ,遗传变异系数为 7 13% ,广义遗传力为 0 6 15,柳树杂种间和无性系间淹水死亡时间存在显著差异 ,垂柳耐水时间最长 ,白柳最短 ;淹水死亡时间与插条干重率、新梢干重、生根数量和根系干重有显著的相关关系 ,遗传相关系数达到 0 340～ 0 44 5。
The genetic variation of the time of death of 55 interspecific hybrids of Interspecific willis and Interspecific hybrids of Salix and Castanopsis fargesii was studied by means of hydroponics of cuttings and their relationship with the status of cuttings, rooting traits and plugs of cuttings Correlation between shoot growth traits. There were significant differences (α = 0 0 1) between the 12 traits of the willow hybrid clones and the 12 traits such as the time of waterlogging death. The general heritability of 12 traits in the studied population reached 0 30 2 ~ 0 995. The genetic variation The coefficient was 7 13% -78 14%; the average time of waterlogging death was 33 ~ 646d, the genetic variation coefficient was 7 13%, the generalized heritability was 0 6 15, the inter-willow intercropping and inter-clonal flooding died There was a significant difference in the time, weeping willow water longest, white willow the shortest; the time of flooding death and cutting dry weight, shoot dry weight, rooting number and root dry weight has a significant correlation, the genetic correlation coefficient of 0 340 ~ 0 44 5.