摘要
选择岑溪软枝油茶半同胞子代的优株采集接穗,以香花油茶(Camellia osmantha)1年生实生苗为砧木建立无性系,进行苗期速生性试验测定。结果表明:苗高和地径在无性系间均达到了极显著差异(P=0.01),而叶片数差异不大;苗高和地径的重复力分别为0.809和0.703,受遗传控制程度高,叶片数的重复力仅为0.444,受遗传控制程度较低;以苗高、地径和叶片数为指标,采用加权系数法进行综合评价,按10%的入选率,筛选出54号速生无性系,其苗高、地径和叶片数的遗传增益分别为12.31%、11.01%和1.38%。由此可见,从苗期生长性状角度,进行岑溪软枝油茶无性系速生性早期选育是可行的。
Collecting scions of superior strains from half sib progeny of Cenxi soft - branch Camellia ole- ifera, with 1 -year- old Camellia osmantha seedlings as rootstocks to establish clones, we conducted a fast - growing test in the seedling stage. The results showed that seedling height and ground diameter were extremely significant （P=0. 01 ） in the clones. However, leaf number was not significant. The repeat- ability of seedling height and ground diameter in clones was 0. 809 and 0. 703, respectively, so the two traits were under a high degree of genetic control. The repeatability of leaf number was 0. 444, which was under a lower degree of genetic control. Considering the seedling height, ground diameter and leaf number as indexes, the weight coefficient method was used for comprehensive evaluation, on the basis of 10% -elected rate, a fast -growing clone No. 54 was selected out that the genetic gains of seedling height, ground diameter and leaf number were 12.31%, 11.01% and 1.38%, respectively. So it was feasible to breed fast - growing Cenxi soft - branch Camellia oleifera clones in the early stage from the growth traits of seedlings.
作者
王东雪
江泽鹏
刘凯
张乃燕
WANG Dong-xue JIANG Ze-peng LIU Kai ZHANG Nai-yan(Guangxi Forestry Research Institute, Guangxi Key Laboratory of Characteristic Non - wood Forest Cultivation ＆ Utilization, Improved Variety and Cultivation Engineering Research Center of Oil - tea Camellia in Guangxi, Nanning 530002, Chin)
出处
《广西林业科学》
2016年第3期284-287,共4页
Guangxi Forestry Science
基金
广西科学研究与技术开发计划项目(桂科攻1598006-3-9)
广西林业科技项目(桂林科研﹝2015﹞37号)
关键词
岑溪软枝油茶
苗期
速生性
Cenxi soft - branch Camellia Oleifera
seedling stage
fast - growing
