Assessment of wheat variety distinctness using SSR markers
文献类型: 外文期刊
第一作者: Wang Li-xin
作者: Wang Li-xin;Liu Li-hua;Li Hong-bo;Pang Bin-shuang;Zhao Chang-ping;Qiu Jun;Chang Li-fang
作者机构:
关键词: wheat variety;distinctness assessment;SSR markers
期刊名称:JOURNAL OF INTEGRATIVE AGRICULTURE ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2015 年 14 卷 10 期
页码:
收录情况: SCI
摘要: Assessment of variety distinctness is important for both the registration and the protection of particular variety. However, the current testing system, which assesses a range of morphological characters of each pair of varieties grown side-by-side, is time-consuming and is not suitable for the assessment of hundreds of samples. The objective of this study was to develop a procedure for the assessment of wheat variety distinctness using simple sequence repeat (SSR) markers. A comparison between the molecular and morphological profile of 797 varieties was made. On the basis of the comparison, pairs of varieties with a genetic similarity value (GSV) 590% were deemed to be distinct, accounting for similar to 85% of varieties assessed in wheat regional trials. For the remaining similar to 15% of varieties, GSVs between different varieties were >90%, among which similar to 35% were not distinct and the other similar to 65% were distinct. Therefore, if given a GSV>90%, the pairs of varieties should be morphologically assessed in the field. To avoid any errors in the assessments, we proposed the elimination of contaminant plants from the sample before comparing the varietal genotypes, scoring of the genotype at each locus with a pair of allele numbers when constructing a molecular profile, and faithfully recording two alleles at a non-homozygous locus. To reduce the workload and cost, a three-grade markers comparison among varieties is suggested. In addition, 80 SSR markers and a technical procedure for assessment of wheat variety distinctness have been proposed. Based on the procedure, the distinctness assessment of similar to 85% of all wheat varieties is completed in our laboratory annually. Consequently, total field assessment has been reduced considerably.
分类号:
- 相关文献
作者其他论文 更多>>
-
Analysis of combining ability for stem-related traits and its correlations with lodging resistance heterosis in hybrid wheat
作者:Yang Wei-bing;Qin Zhi-lie;Sun Hui;Hou Qi-ling;Gao Jian-gang;Chen Xian-chao;Zhang Li-ping;Wang Yong-bo;Zhao Chang-ping;Zhang Feng-ting;Yang Wei-bing;Zhang Li-ping;Zhao Chang-ping;Zhang Feng-ting
关键词:lodging resistance; stem-related traits; general combining ability; specific combining ability; heterosis
-
Yield-related agronomic traits evaluation for hybrid wheat and relations of ethylene and polyamines biosynthesis to filling at the mid-grain filling stage
作者:Yang Wei-bing;Qin Zhi-lie;Sun Hui;Liao Xiang-zheng;Gao Jian-gang;Wang Yong-bo;Hou Qi-ling;Chen Xian-chao;Tian Li-ping;Zhang Li-ping;Ma Jin-xiu;Chen Zhao-bo;Zhang Feng-ting;Zhao Chang-ping
关键词:hybrid wheat; agronomic traits; ethylene; polyamines; grain filling; heterosis
-
Genetic characteristics of a wheat founder parent and a widely planted cultivar derived from the same cross
作者:Chang Li-fang;Li Hui-hui;Wu Xiao-yang;Lu Yu-qing;Zhang Jin-peng;Yang Xin-ming;Li Xiu-quan;Liu Wei-hua;Li Li-hui
关键词:wheat; founder parents; widely planted cultivars; SNP
-
Phylogenetic Analysis and Expression Patterns of the MAPK Gene Family in Wheat (Triticum aestivum L.)
作者:Lian Wei-wei;Tang Yi-miao;Gao Shi-qing;Zhang Zhao;Zhao Xin;Zhao Chang-ping;Lian Wei-wei
关键词:wheat;MAPK;EST;phylogenetic analysis;profile