Plus Scattered Trees Selection of Pterocarya stenoptera

doi:10.11924/j.issn.1000-6850.casb16010035

Abstract

Abstract: This research aimed at an effective utilization of Pterocarya stenoptera excellent genetic resources, methodological system of plus scattered trees selection of Pterocarya stenoptera was established in order to provide a scientific basis for genetic improvement and exploitation and utilization of this species. On the basis of extensive field investigation, a regression equation between tree age and diameter at breast height of Pterocarya stenoptera in Jianghan plain was established as Y=0.737X 10.277. 24 candidate plus scattered trees of Pterocarya stenoptera were used as the research object, the weight value of annual average growth, ratio of height to diameter, height under branch, crown, ratio of crown to diameter, branching angle, bark thickness and the thickest branches were determined using principal component analysis. Combined with quantitative indicators and form quality index of primary plus scattered trees, 6 plus scattered trees were selected by the comprehensive scoring method, and the selection rate was 25%. The comprehensive scoring method provides a scientific method for plus scattered trees selection.

CLC Number:

S722.3

Wang Xiaorong,Hu Xingyi,Du Kebing,Fu Tian,Pang Hongdong and Hu Wenjie. Plus Scattered Trees Selection of Pterocarya stenoptera[J]. Chinese Agricultural Science Bulletin, 2016, 32(22): 15-20.

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