Genetic analysis of postharvest flower longevity in Asiatic hybrid lilies
Genetic analysis of postharvest flower longevity in Asiatic hybrid lilies
复制标题
亚洲杂交百合采后花寿命的遗传分析
作者：
J.J.M. van der Meulen;J. van Oeveren;J. Jansen;J. M. van Tuyl
为研究亚洲百合采后花寿命的遗传规律，10个品种和45个后代在标准化条件下在生长室中进行强制、收获和评价。单花寿命的方差分析表明，亲本间、子代间和子代内子代间的变异均达到极显著水平（p < 0.001）。在单株水平上计算的高广义遗传力（0.79）表明，选择长的单花寿命是非常有效的。一般配合力（GCA）效应极显著（p < 0.001），狭义遗传力较高（0.74）。因此，一个基因型的单花寿命可以作为其育种价值的指标。尽管可以预期会出现偏离结果，因为特定配合力（SCA）效应也是显著的（p = 0.046）。单花寿命与其它植物性状之间存在着小而显著的相关性，并讨论了这些相关性对提高百合花序采后性能的选择效率的影响。
To investigate the genetic regulation of postharvest flower longevity in Asiatic hybrid lilies (Lilium L.), 10 cultivars and 45 progenies were forced, harvested and evaluated under standardised conditions in growth chambers. Analysis of variance for individual flower longevity indicated highly significant (p < 0.001) variation among parents, among progenies and among descendants within progenies. High broad-sense heritability (0.79) calculated at the individual plant level indicated that selection for long individual flower longevity can be expected to be very effective. General combining ability (GCA) effects were highly significant ( p < 0.001), and the estimated narrow-sense heritability was high (0.74). Therefore, individual flower longevity of a genotype can be used as an indication for its breeding value. Although deviating results can be expected as specific combining ability (SCA) effects were also significant ( p = 0.046). Small, but significant correlations between individual flower longevity and other plant characters were found. The impact of these correlations on the selection efficiency for improved postharvest performance of lily inflorescences is discussed.