Evaluation on Growth and Stem Form Characteristics of Species and Hybrids of Larix spp.

CHEN Dong-sheng; SUN Xiao-mei; ZHANG Shou-gong

The aim of this study is to breed excellent larch timber as building material by evaluating the growth and stem form characteristics of larch species and their hybrids. This study was carried out in a 32-year-old larch experimental forest in Qingyuan County, Liaoning Province. The growth and stem form characteristics of 4 larch species (Larix kaempferi Carr, L. gmelinii Kuzen, L. olgensis Henry and L. principis-rupprechtii Mayr) and 4 hybrids (L. kaempferi Carr × L. gmelinii Kuzen, L. kaempferi Carr × L. principis-rupprechtii Mayr, L. kaempferi Carr × L. olgensis Henry, and L. kaempferi Carr × L. kaempferi Carr), were analyzed and the differences was evaluated comprehensively using the membership function based on Fuzzy mathematics. The results showed that the growth properties of larch species and hybrids had significantly differences (pL. kaempferi × L. gmelinii, L. kaempferi × L. olgensis, and L. kaempferi were respectively ranked the first three. They had the obvious advantage in growth and stem form characteristics, were suitable to be promoted as good varieties in the northeast area of China.

1. Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China

Received Date: 2015-01-13

Abstract: The aim of this study is to breed excellent larch timber as building material by evaluating the growth and stem form characteristics of larch species and their hybrids. This study was carried out in a 32-year-old larch experimental forest in Qingyuan County, Liaoning Province. The growth and stem form characteristics of 4 larch species (Larix kaempferi Carr, L. gmelinii Kuzen, L. olgensis Henry and L. principis-rupprechtii Mayr) and 4 hybrids (L. kaempferi Carr × L. gmelinii Kuzen, L. kaempferi Carr × L. principis-rupprechtii Mayr, L. kaempferi Carr × L. olgensis Henry, and L. kaempferi Carr × L. kaempferi Carr), were analyzed and the differences was evaluated comprehensively using the membership function based on Fuzzy mathematics. The results showed that the growth properties of larch species and hybrids had significantly differences (pL. kaempferi × L. gmelinii, L. kaempferi × L. olgensis, and L. kaempferi were respectively ranked the first three. They had the obvious advantage in growth and stem form characteristics, were suitable to be promoted as good varieties in the northeast area of China.

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Reference (21)

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Evaluation on Growth and Stem Form Characteristics of Species and Hybrids of Larix spp.

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