枣种质资源的表型遗传多样性

doi:10.11707/j.1001-7488.20141005

Abstract

Abstract:

In this study, 60 phenotypic characters of 200 accessions collected from the national jujube(Ziziphus jujuba) germplasm resources garden were analyzed by descriptive statistics, diversity test, correlation and principal component analyses. The results showed: 1) There were significant differences in qualitative characters, with Shannon-Wiener indexes between 0.33-1.96. The genetic traits with high diversity included fruit shape, tree shape, leaf base shape, color of fruit head, leaf tip shape, and fruit color; 2) The quantitative characters showed wide variations, with variable coefficients and Shannon-Wiener indexes of 2.39%-86.84% and 0.99-2.10, respectively; 3) There were 68 pairs of extremely significant correlations and 27 pairs of significant correlations among quantitative characters, showing the relationship closeness, which could be divided into 5 groups by R-type variable clustering; 4) The twelve quantitative characters, including extension shoot length, secondary shoot length, and fruit rate per fruiting shoot, had rich genetic information and should be preferentially considered as important characterization and evaluation items; 5) There were significant differences in 1-2 phenotypic quality traits between rare and common jujube germplasms, including pit existence, fruit shape, secondary shoot tortuosity, and they should be classified as formas.

Key words: Ziziphus jujuba, germplasm resources, phenotypic character, genetic diversity

CLC Number:

S718.42

Wang Yongkang, Wu Guoliang, Zhao Ailing, Li Dengke. Phenotypic Genetic Diversity of Jujube Germplasm Resources[J]. Scientia Silvae Sinicae, 2014, 50(10): 33-41.

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Phenotypic Genetic Diversity of Jujube Germplasm Resources

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