Studies on Genetic Diversity Based on Analysis of Family Tree of Cymbidium Cultivars(Cymbidium hybridum)

doi:10.7668/hbnxb.2010.06.019

Abstract

Abstract: The retrieval of cymbidium family tree by entry the website of British Royal Horticulture society (RHS)revealed that the 24 cymbidium cuhivars imported from Japan were registered in 1941—2001.Thirteen primeval species were involved in breeding of these cuhivars.C.insigne, C.10wianum, C.eburneum, C.hookerianum contributed greatly in the breeding of them.The contribution of C.erythrostylum, C.tracyanum etc.was less or more in differentcultivars.The genetic diversity was analyzed based on the contribution of thirteen primeval species.The conclution was that the C.Wakakusa, C.Melody Fair, C.Lunagrad and C.Walu has more genetic diversity than the others.There was still more than 70%primeval genetic diversity in these 4 cuhivars.But some cuhivars has less primeval genetic diversity。e.g.C.Sarah Jean has the lest primeval genetic diversity, which was only 39.7%.The retaining quantity of primeval genetic diversity could be a important estimation yardstick of parents selection in cross breeding of cymbidi “m hybridum.

Key words: Cymbidium hybridum, Family tree analysis, Genetic diversity

CLC Number:

S682.31

WANG Li-min, WANG Si-qing, MENG Yue-e, LI Yan-min, WANG Hui-juan. Studies on Genetic Diversity Based on Analysis of Family Tree of Cymbidium Cultivars(Cymbidium hybridum)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(6): 104-108. doi: 10.7668/hbnxb.2010.06.019.

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