广西林业科学2018，Vol.47Issue(1)：18-23,6.
邓恩桉种源试验林生长性状遗传变异及选择
Genetic Variation and Selection of Growth Traits in Eucalyptus dunnii Provenances Plantation
摘要
Abstract
The adaptability and growth traits of 6-year-old Eucalyptus dunnii provenances plantation were in-vestigated and statistical analyzed in order to screen the excellent genetic materials. Results showed that the overall retention rate of experimental plantation was 52.56%,and the overall adaptability of various sources was significantly different.The average of tree height(H),diameter at breast height(DBH)and stem volume (V)was 18.3 m,16.4 cm and 0.187 5 m3,respectively.There were extremely significant differences among growth traits,and three traits were genetically controlled below medium intensity at the level of provenance and single plant.By building traits composite index equation,three super provenances and 75 superior individuals were selected according to the standard. The genetic gains in height,DBH and volume of these three super provenances were 2.89%,3.98% and 9.11%,respectively;and for the 75 superior individuals,the genetic gains were 4.66%,8.56% and 16.01%,respectively,which demonstrated distinct selection effect.关键词
邓恩桉/种源/变异/种源选择Key words
Eucalyptus dunnii/provenance/variation/provenance selection分类
农业科技引用本文复制引用
卢晨升,陈健波,梁机,郭东强,项东云..邓恩桉种源试验林生长性状遗传变异及选择[J].广西林业科学,2018,47(1):18-23,6.基金项目
广西林业科技项目(桂林科字[2016]第16号) （桂林科字[2016]第16号）
中央财政林业科技推广示范项目([2015]TG18号) （[2015]TG18号）
