Influence of ethnic traditional cultures on genetic diversity of rice landraces under on-farm conservation in southwest China

doi:10.1186/s13002-016-0120-0

	Influence of ethnic traditional cultures on genetic diversity of rice landraces under on-farm conservation in southwest China
	Wang, Yanjie 1,2; Wang, Yanli 3; Sun, Xiaodong 4; Caiji, Zhuoma 2; Yang, Jingbiao 2; Cui, Di 1; Cao, Guilan 1; Ma, Xiaoding 1; Han, Bing 1; Xue, Dayuan 2
刊名	JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE
	2016
卷号	12 页码:-
关键词	Ethnic traditional cultures Ex-situ conservation Genetic diversity On-farm conservation Rice landraces
ISSN号	1746-4269
DOI	10.1186/s13002-016-0120-0
通讯作者	Wang, Yanjie
英文摘要	Background: Crop genetic resources are important components of biodiversity. However, with the large-scale promotion of mono-cropping, genetic diversity has largely been lost. Ex-situ conservation approaches were widely used to protect traditional crop varieties worldwide. However, this method fails to maintain the dynamic evolutionary processes of crop genetic resources in their original habitats, leading to genetic diversity reduction and even loss of the capacity of resistance to new diseases and pests. Therefore, on-farm conservation has been considered a crucial complement to ex-situ conservation. This study aimed at clarifying the genetic diversity differences between ex-situ conservation and on-farm conservation and to exploring the influence of traditional cultures on genetic diversity of rice landraces under on-farm conservation.Methods: The conservation status of rice landrace varieties, including Indica and Japonica, non-glutinous rice (Oryza sativa) and glutinous rice (Oryza sativa var. glutinosa Matsum), was obtained through ethno-biology investigation method in 12 villages of ethnic groups from Guizhou, Yunnan and Guangxi provinces of China. The genetic diversity between 24 pairs of the same rice landraces from different times were compared using simple sequence repeat (SSR) molecular markers technology. The landrace paris studied were collected in 1980 and maintained exsitu, while 2014 samples were collected on-farm in southwest of China.Results: The results showed that many varieties of rice landraces have been preserved on-farm by local farmers for hundreds or thousands of years. The number of alleles (Na), effective number of alleles (Ne), Nei genetic diversity index (He) and Shannon information index (I) of rice landraces were significantly higher by 12.3-30.4 % under onfarm conservation than under ex-situ conservation. Compared with the ex-situ conservation approach, rice landraces under on-farm conservation programs had more alleles and higher genetic diversity. In every site we investigated, ethnic traditional cultures play a positive influence on rice landrace variety diversity and genetic diversity.Conclusion: Most China's rice landraces were conserved in the ethnic areas of southwest China. On-farm conservation can effectively promote the allelic variation and increase the genetic diversity of rice landraces over the past 35 years. Moreover, ethnic traditional culture practices are a crucial foundation to increase genetic diversity of rice landraces and implement on-farm conservation.
学科主题	Pharmacology & Pharmacy
语种	英语
出版者	BIOMED CENTRAL LTD
WOS记录号	WOS:000386262200001
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/105303]
专题	作物科学研究所_种质资源保存与研究中心
作者单位	1.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China 2.Minzu Univ China, Coll Life & Environm Sci, Beijing 100081, Peoples R China 3.Inner Mongolia Inst Biotechnol Res, Hohhot 010070, Peoples R China 4.Heilongjiang Inst Sericulture Res, Harbin 150086, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yanjie,Wang, Yanli,Sun, Xiaodong,et al. Influence of ethnic traditional cultures on genetic diversity of rice landraces under on-farm conservation in southwest China[J]. JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE,2016,12:-.
APA	Wang, Yanjie.,Wang, Yanli.,Sun, Xiaodong.,Caiji, Zhuoma.,Yang, Jingbiao.,...&Han, Longzhi.(2016).Influence of ethnic traditional cultures on genetic diversity of rice landraces under on-farm conservation in southwest China.JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE,12,-.
MLA	Wang, Yanjie,et al."Influence of ethnic traditional cultures on genetic diversity of rice landraces under on-farm conservation in southwest China".JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE 12(2016):-.