论文部分内容阅读
杉木无性系扦插试验结果表明,秋季扦插平均成活率83%,比春、夏、冬季扦插平均成活率分别高53%、69%和60%。102个无性系1年生秋插苗平均成苗率为81%,苗高29.5厘米,地径4.1毫米,直立率59.2%,反映秋插苗质量的苗高、地径、直立率等性状受较强的遗传控制且遗传变异幅度较大。秋插苗直立率与成苗率、苗高、地径之间存在极显著的遗传正相关,根据直立率进行间接选择,入选10个无性系的成活率、成苗率、苗高、地径、直立率的平均增益分别为8.8%、9.7%、8.8%、7.3%和44.8%。
The results of Chinese fir clonal cutting showed that the average survival rate of autumn cutting was 83%, which was 53%, 69% and 60% higher than that of spring, summer and winter respectively. The average seedling rate of one-year-old autumn seedlings of 102 clones was 81%, height of 29.5 cm, diameter 4.1 mm, standing rate of 59.2%, which reflected the seedling height, diameter, Upright rate and other traits by a strong genetic control and genetic variation larger. There was a significant genetic positive correlation between the stand-up rate of autumn seedlings and the rate of seedling emergence, seedling height and root diameter. The survival rate, seedling emergence rate, seedling height, , The average gain of upright rate were 8.8%, 9.7%, 8.8%, 7.3% and 44.8% respectively.