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Citation:

Genetic Effects of Growth Traits for the Third Generation Pinus massoniana Germplasm and the Interaction with Environment

  • Received Date: 2015-03-24
  • Two samples of 3-year-old Pinus massoniana grown in Laoshan forest farm of Zhejiang Province and Weimin State-owned Forest Farm of Fujian Province respectively were used to investigate the genetic effects and the interaction with environment on growth traits in the 6×6 half diallel cross design. The results showed that the combining ability and the interactions of combining ability with environment were significant effective in the height and DBH. The additive gene effects of height played a major role in the two research site. The DBH appeared to be controlled mainly by the additive gene effects in Weimin site, while controlled primarily by the dominance gene effects in Laoshan site. The performance of tree height, DBH and stem volume were controlled mainly by the environment effects and secondly by the additive gene effects and the interactions of dominance gene effect with environment and the dominance gene effects, the interactions of additive gene effect with environment played the weakest role under different environment conditions. The stability of general combining ability(GCA) was significantly higher than that of the specific combining ability(SCA). Based on tree growth index, 2 superior parents and 5 superior combinations were preliminarily selected for the two samples respectively. The gains of superior parents for the two test samples were 5.61%-8.05% and 10.22%-12.98% compared with the mean value, 45.11%-48.48% and 51.84%-55.64% compared with the progeny of the original high-quality stands. The gains of superior combinations were 3.37%-17.69% and 9.35%-25.93% compared with the mean value of the test samples, 42.04%-61.72% and 50.64%-73.48% compared with the progeny of the original high-quality stands.
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Genetic Effects of Growth Traits for the Third Generation Pinus massoniana Germplasm and the Interaction with Environment

  • 1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Key Laboratory of Tree Breeding of Zhejiang Province, Engineering Research Center of Masson Pine of State Forestry Administration, Hangzhou 311400, Zhejiang, China
  • 2. Laoshan Forest Farm of Chun'an Country, Zhejiang Province, Chun'an 311700, Zhejiang, China
  • 3. Weimin State-owned Forest Farm of Shaowu City, Fujian Province, Shaowu 354006, Fujian, China

Abstract: Two samples of 3-year-old Pinus massoniana grown in Laoshan forest farm of Zhejiang Province and Weimin State-owned Forest Farm of Fujian Province respectively were used to investigate the genetic effects and the interaction with environment on growth traits in the 6×6 half diallel cross design. The results showed that the combining ability and the interactions of combining ability with environment were significant effective in the height and DBH. The additive gene effects of height played a major role in the two research site. The DBH appeared to be controlled mainly by the additive gene effects in Weimin site, while controlled primarily by the dominance gene effects in Laoshan site. The performance of tree height, DBH and stem volume were controlled mainly by the environment effects and secondly by the additive gene effects and the interactions of dominance gene effect with environment and the dominance gene effects, the interactions of additive gene effect with environment played the weakest role under different environment conditions. The stability of general combining ability(GCA) was significantly higher than that of the specific combining ability(SCA). Based on tree growth index, 2 superior parents and 5 superior combinations were preliminarily selected for the two samples respectively. The gains of superior parents for the two test samples were 5.61%-8.05% and 10.22%-12.98% compared with the mean value, 45.11%-48.48% and 51.84%-55.64% compared with the progeny of the original high-quality stands. The gains of superior combinations were 3.37%-17.69% and 9.35%-25.93% compared with the mean value of the test samples, 42.04%-61.72% and 50.64%-73.48% compared with the progeny of the original high-quality stands.

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