Genetic relationships among CIMMYT subtropical QPM and Chinese maize inbred lines based on SSRS

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	Genetic relationships among CIMMYT subtropical QPM and Chinese maize inbred lines based on SSRS
	Li, M. S.; Li, X. H.; Salvi, S.; Tuberosa, R.; Yuan, L. X.; Rotono, F.; Bai, L.; Zhang, S. H.
刊名	MAYDICA
	2006
卷号	51 期号:3-4 页码:543-549
关键词	maize SSR genetic distance QPM Zea mays
ISSN号	0025-6153
通讯作者	Li, M. S.
英文摘要	Forty six maize inbred lines, including 22 CIMMYT QPM lines and 24 Chinese lines, were investigated with SSRs in the study. The objectives of this research were to: (1) investigate the genetic diversity among the 46 inbred lines, (2) assess the genetic distance between subtropical and Chinese Quality Protein Maize (QPM) inbred lines and (3) estimate the genetic relationships between subtropical QPM and Chinese normal inbred lines. In total, 64 simple-sequence repeats (SSRs) primers distributed uniformly throughout the maize genome were considered. The mean value (0.66) of the polymorphic index content (PIC) for the SSR loci provided sufficient discrimination ability for the assessment of genetic diversity among the inbred lines. The mean estimates of genetic similarity (GS) among the 18 Chinese normal maize lines (0.344) and among the six Chinese QPM lines (0.486) were significantly higher (P < 0.01) than the mean GS among 22 CIMMYT QPM lines (0.310). Chinese normal maize lines and QPM lines were considered to have a narrower genetic diversity than the CIMMYT QPM lines. The result of GS estimates among CIMMYT subtropical QPM lines indicated that these lines were derived from such a broad-based germplasm that some lines with a similar pedigree showed large genetic distances. The average-linkage (UPGMA) cluster analysis classified the 46 inbred lines into two main clusters. Most Chinese normal maize lines were classified into a large cluster and most CIMMYT subtropical QPM lines were grouped in a different cluster. These results indicated that incorporating CIMMYT subtropical QPM lines into Chinese maize germplasm according to their genetic relationships would enhance the genetic basis of the latter.
学科主题	Agronomy ; Plant Sciences ; AGRONOMY ; PLANT SCIENCES
语种	英语
出版者	MAYDICA-IST SPER CEREALICOLTUR
WOS记录号	WOS:000242947400013
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5756]
专题	作物科学研究所
作者单位	(1)Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China;(2)Dept Agroenvironm Sci & Technol, I-40137 Bologna, Italy
推荐引用方式 GB/T 7714	Li, M. S.,Li, X. H.,Salvi, S.,et al. Genetic relationships among CIMMYT subtropical QPM and Chinese maize inbred lines based on SSRS[J]. MAYDICA,2006,51(3-4):543-549.
APA	Li, M. S..,Li, X. H..,Salvi, S..,Tuberosa, R..,Yuan, L. X..,...&Zhang, S. H..(2006).Genetic relationships among CIMMYT subtropical QPM and Chinese maize inbred lines based on SSRS.MAYDICA,51(3-4),543-549.
MLA	Li, M. S.,et al."Genetic relationships among CIMMYT subtropical QPM and Chinese maize inbred lines based on SSRS".MAYDICA 51.3-4(2006):543-549.