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Genetic Diversity and Population Structure Analysis of Currently Cultivated Rice Landraces from Hani’s Terraced Fields in Yunnan Province

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  • 1Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou 225009, China
    2College of Biological Science and Technology, Yangzhou University, Yangzhou 225009, China
    3Nanjing Institute of Environmental Sciences of MEP, Nanjing 210042, China
    4Yunnan Honghe University, Mengzi 661100, China
*Corresponding author, E-mail:qqliu@yzu.edu.cn

Received date: 2014-06-07

  Revised date: 2014-09-17

  Online published: 2015-01-10

Abstract

In order to provide useful information for protection and utilization of rice landraces from Hani’s Terraced Fields, the genetic diversity and population structure of the currently cultivated lines were determined by using molecular makers. In this study, 118 SSR markers were used to detect the polymorphism of 47 local rice materials, and their genetic diversity and population structure were analyzed. There were a total of 255 alleles, ranging from 2 to 4 per locus, with the mean of 2.161. Genetic diversity index varied from 0.043 to 0.656 with an average of 0.303. The polymorphic information content (PIC) ranged from 0.042 to 0.583 with the average of 0.256. There are two highly polymorphic loci (PIC> 0.5) and 66 moderately polymorphic loci (0.25 <PIC <0.5). All the landraces could be divided into two groups, partial indica group and partial japonica group, based on the genetic similarity coefficient and mathematical model of population structure. There was no obvious regularity between clustering results and altitude, but partial indica red rice group had two clusters coming from different altitudes. In conclusion, currently cultivated rice in Hani’s Terraced Fields had a majority of landraces belonging to indica type, and lower genetic diversity than that in previous reports.

Cite this article

Cheng-chen LIU, Fu-wei ZHAO, Xiao-xia WU, Chang-quan ZHANG, Kong-zhi ZHU, Da-yuan XUE, Jian-yong WU, Shao-wen HUANG, Xiao-ying XU, Yin-gen JIN, Qiao-quan LIU . Genetic Diversity and Population Structure Analysis of Currently Cultivated Rice Landraces from Hani’s Terraced Fields in Yunnan Province[J]. Chinese Journal OF Rice Science, 2015 , 29(1) : 28 -34 . DOI: 10.3969/j.issn.1001-7216.2015.01.004

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