橡胶树优树无性系茎围生长量比较  

Comparative Analysis of Stem Girth on Plus-tree Clones of Hevea brasiliensis

作　　者：杨耀文 熊延林[1] 赵祺 杨湉 吴裕[1] YANG Yaowen;XIONG Yanlin;ZHAO Qi;YANG Tian;WU Yu(Yunnan Institute of Tropical Crops,Jinghong 666100,China)

机构地区：[1]云南省热带作物科学研究所,云南景洪666100

出　　处：《热带农业科技》2021年第2期6-10,共5页Tropical Agricultural Science & Technology

基　　金：国家重点研发计划项目(2019YFD1001102-01);云南省热带作物科技创新体系建设专项资金项目(RF2020-2)。

摘　　要：以橡胶树10个优树无性系为研究对象,推广良种云研77-4和RRIM600无性系为对照,对其2~3龄植株茎围生长量进行测定和比较分析。10个优树无性系的茎围平均生长量为17.85~22.84cm,而2个对照品种为16.14 cm和16.96 cm,参试无性系的茎围平均生长量都大于对照。其中,614号有效株共104株,分2次重复设计,植株茎围平均生长量22.84 cm,变异系数15.66%,表现出良好的整齐性和速生性。Experiment of 10 plus-tree clones was conducted to determine and analyze the growth of stem girth at 2 or 3 years old, improved varieties Yunnan 77-4 and RRIM600 as control. The stem girth of 10 tested clones averaged in 17.85 cm to22.84 cm, while the other two in control was in the range of 16.14 cm to 16.96 cm. Results showed that all plus-tree clones have better growth than that of in control. There are 104 effective plants from No.614 strain,two replicates. The individual average stem girth is 22.84 cm with 15.66% of variation coefficient. It performed in well uniformity and rapid growth.

关 键 词：橡胶树 幼龄林 优树无性系 茎围 

分 类 号：S794.104[农业科学—林木遗传育种]