%0 Journal Article
%A FENG Zhong-Ping
%A JIN Guo-Qing
%A TENG Guo-Xin
%A YU Qi-Xin
%A ZHANG Zhen
%A ZHOU Zhi-Chun
%T Variation and Selection of Growth Character on the Young Third Generation of <em>Pinus massoniana</em>
%D 2017
%R 10.7525/j.issn.1673-5102.2017.02.015
%J Bulletin of Botanical Research
%P 266-273
%V 37
%N 2
%X We analyzed the genetic parameters, breeding value, accumulation and distribution of 2-year raw biomass with a half diallel cross among 6&times;6 on three generation young growth period of forest on Laoshan farm in Zhejiang Province. There were significant genetic differences among the tree height, ground diameter, crown breadth and number of living branch in the young period of <em>Pinus massoniana</em>. There were also significant genetic differences in the period of 2-year biomass between different hybrid combinations. The ground biomass accounted for 87.17% of the total plant biomass in 2-year hybrid combination. The height growth was the largest in the young period of tree growth trait. The height growth was increased by 4.23 times from 5 to 2 years. According to method of comprehensive breeding value, the tree height(<em>H</em>) breeding value combined with conjointly diameter(<em>D</em><sub>0</sub>), and 2 a raw stem biomass index(<em>B</em><sub>s</sub>) to choose higher survival rate of hybrid combinations. The higher survival rate combinations were 22&times;44, 33&times;22 and 40&times;44 based on 20% year old open pollination progenies. Based on the value of tree height and ground diameter of plant breeding, 16 number of plant were chosen accounting for 2%. The average gain were 1.07 m(tree height), 1.58 cm(ground diameter), 0.32 m(crown breadth) and 4.67(living branch number), respectively.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2017.02.015