A Comparative Study on the Polymorphism of Loci cpDNATrnS-TrnG and cpDNATrnQ-rps16 in Cultivated and Wild Loquats

ACTA HORTICULTURAE SINICA ›› 2012, Vol. 39 ›› Issue (10): 1913-1918.

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A Comparative Study on the Polymorphism of Loci cpDNA^TrnS-TrnG and cpDNA^TrnQ-rps16 in Cultivated and Wild Loquats

WANG Yun-Sheng, LIN Shun-Quan

（College of Horticulture，South China Agricultural University，Guangzhou 510642，China）

Online:2012-10-25 Published:2012-10-25

Abstract

Abstract: In order to understand the genetic diversity of loquat（Eriobotrya japonica Lindl.） in view of domestication of wild loquat，the sequences of loci cpDNA^TrnS-TrnG and cpDNA^TrnQ-rps16 of 55 accessions cultivated and some wild loquats collected from different locations were analyzed and compared in this studies. No nucleotide polymorphism was found in cultivated population. However，one indel/insert and two substitutes appeared in the segment of cpDNA^TrnS-TrnG，and three mutants and two indel/inserts appeared in the segment of cpDNA^TrnQ-rps16 of wild populations. The results implied very low genetic diversity existed in cultivated population of loquat induced by the severe genetic bottleneck generated during the process of domestication of cultivated loquat.

Key words: loquat, genetic diversity, wild resource, cultivars

CLC Number:

S 667.3

WANG Yun-Sheng, LIN Shun-Quan. A Comparative Study on the Polymorphism of Loci cpDNA^TrnS-TrnG and cpDNA^TrnQ-rps16 in Cultivated and Wild Loquats[J]. ACTA HORTICULTURAE SINICA, 2012, 39(10): 1913-1918.

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A Comparative Study on the Polymorphism of Loci cpDNA^TrnS-TrnG and cpDNA^TrnQ-rps16 in Cultivated and Wild Loquats

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