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抗病湿地松、火炬松家系评价及优良家系选择(PDF)

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

Issue:
2010年02期
Page:
51-54
Column:
研究论文
publishdate:
2010-03-30

Article Info:/Info

Title:
Family evaluation and superior family selection for disease resistant Pinus elliottii and P.taeda
Author(s):
LIN Sijing
Fujian Province Xipi National Forest Farm of Hua’an, Hua’an 363800, China
Keywords:
Pinus elliottii P.taedagene bank analysis of genetic variance
Classification number :
S722
DOI:
10.3969/j.jssn.1000-2006.2010.02.011
Document Code:
A
Abstract:
With the aim of selecting suitable families for Fujian province, the growth traits of families of disease resistance Pinus elliottii and P.taeda, which were introduced from USA and planted in gene bank, were evaluated. The results showed that P.elliottii and P.taeda grew well in Fujian province, China. The average value of tree height was 5.95 m, that of DBH was 11.1 cm, and the crown was 3.30 m, when the P.elliottii was 8 years old. The same average values of P.taeda were 5.97 m, 10.7 cm and 3.66 m respectively. There were genetic variations among families on tree height, DBH and crown. These variations were controlled by genetic factors with moderate intensity. The five P.elliottii families such as M39×8 were selected, their average values of tree height, DBH and crown were 8.69 m, 13.9 cm and 4.48 m respectively, these values were better 46.05 %, 25.23 % and 35.76 % better than those of selection group. The genetic gain of tree height was 1663 %, that of DBH was 11.90 % and crown’s was 17.22 %. The five P.taeda families such as (5-142)×(5-148) were selected and the selection effects of P.taeda were similar to P.elliottii, but those were slightly better than P.elliottii. The selection effects of these two species were effective, and selected families could be widely used for artificial plantations in Fujian province.

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Last Update: 2010-05-14