Phenotypic Traits of Half Sibs-seeds and Their Offspring Seddlings on Picea crassifolia Superior Individual Trees

doi:10.7525/j.issn.1673-5102.2018.03.009

Abstract

Abstract: Picea crassifolia is an important native tree species because it has a strong adaptability in northwest China, plays an important role in soil and water conservation, urban and rural greening, and barren hill afforestation. For understanding the half-sibling seeds and their progeny seedlings phenotypic traits of P. crassifolia variation characteristics, we selected the half sibling seeds and its semi-half-sibling seedlings in eight years of superior individual trees as materials to analyze and compare different good family half-sibling seeds and its offspring seedling phenotypic traits. There were significant differences in the seed scales, seed wing and seed phenotypic traits of the half sibling seeds in P. crassifolia, and there were significant differences among families and within families(P<0.01). There is a significant positive correlation between seed scale, seed longiness and kilo-grain weightiness of half sibs-seeds. The genetic heritability and genetic variation coefficients of the seedlings of the half-siblings of P. crassifolia were the greatest(0.951%, 19.14%) in seedling height, followed by the second(0.737%, 10.87%) in ground diameter, and the smallest in lateral branches(0.642%, 2.66%). The variation of phenotypic traits on half sibs-seeds and their offspring seedlings is mainly controlled by genetic factors and environmental factors.

Key words: Picea crassifolia, superior individual, half-sibling seeds, offspring seedling, phenotypic trait

CLC Number:

S791.189

LÜ Dong, ZHANG Hong-Bin, LI Bing-Xin, ZHAO Hu. Phenotypic Traits of Half Sibs-seeds and Their Offspring Seddlings on Picea crassifolia Superior Individual Trees[J]. Bulletin of Botanical Research, 2018, 38(3): 377-383.

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