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26年生马尾松初级种子园半同胞子代变异及家系选择(PDF/HTML)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2017年03期
Page:
189-192
Column:
研究简报
publishdate:
2017-05-31

Article Info:/Info

Title:
Open pollination progeny test and family selection of 26-year-old Pinus massoniana Lamb. seed orchard
Article ID:
1000-2006(2017)03-0189-04
Author(s):
TAN Jianhui1 FENG Yuanheng1 HUANG Yongli2 YANG Zhangqi1*
1. Guangxi Academy of Forestry,Nanning 530002,China;
2. Nanning Forestry Division, Wuming 530107, China
Keywords:
Pinus massoniana Lamb. seed orchard progeny test plantation family selection
Classification number :
S722.8
DOI:
10.3969/j.issn.1000-2006.201507061
Document Code:
-
Abstract:
【Objective】 To determine genetic variation and selection evaluation of the entire alternation cutting period of masson pine(Pinus massoniana Lamb.)half sibling families could provide a reliable basis for high generation genetic improvement for masson pine. 【Methods】 Long-term tree height, DBH and wood volume were analyzed based on the 169 half compatriot progeny test forest of 26-year-old masson pine seed orchard in the Nanning Forestry Division. 【Results】 Tree height, DBH and wood volume were significantly different among families, which indicated the primary clonal seed orchard of masson pine had rich variation among the half compatriot and great improvement potential. Family wood volume growth was lower than that of the Gupeng provenance by 2.96% and lower than that of the Wuming provenance by 5.33%. This indicated that some trees had better genotypes. The family heritability of tree height, DBH and volume were 0.555, 0.466 and 0.423, respectively, in medium-high heritability. The individual heritability of those three was 0.219, 0.128 and 0.111, in low heritability. Both the family and individual heritabilities represented as tree height > DBH > wood volume and tree height had strong heritability. 【Conclusion】 Based on the selection index of the family mean wood volume and volume variation coefficient, 37, 98, 107, 113 and 137 were selected as superior families; these could be used for the high generation genetic improvement of masson pines.

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Last Update: 2017-05-20