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Articles by You-liang Zheng
Total Records ( 3 ) for You-liang Zheng
  Ma Zhao-cai , Qing Chen and You-liang Zheng
  The allelic compositions at Gli-A1 and Gli-A2 loci were investigated in 113 accessions of einkorn wheat by using Acid Polyacrylamide Gel Electrophoresis (APAGE). A total of 42 alleles were identified and the mean genetic variation index was 0.9418 at Gli-A1 and Gli-A2 loci in 113 accessions of einkorn wheat. A total of 37, 33 and 38 alleles were identified and the mean genetic variation indexes were 0.9378, 0.9314 and 0.9251 at Gli-A1 and Gli-A2 loci in the accessions of T. monococcum ssp. boeoticum, T. monococcum ssp. monococcum and T. urartu, respectively. In some accessions, the gliadin genes can`t be identified at Gli-A1 or Gli-A2 loci. It indicated that there might exist some new gliadin genes in these accessions. The results indicated that higher gliadin diversity was present in einkorn wheat. In addition, these accessions analyzed could also be used as genetic resource to improve the quality and to broaden the genetic base of common wheat.
  Ping-Ping Zhuang , Ji-Rui Wang , Yu-Ming Wei and You-Liang Zheng
  The endosperm storage protein allelic variations and agronomic performance in 85 accessions of persian wheat (Triticum carthlicum Nevski) were analyzed for their endosperm storage protein allelic composition. Higher variations of gliadins were observed in the persian wheat accessions and the gliadin variations among persian wheat accessions were associated with their geographic origins. At Glu-1 loci, 8 alleles were detected by SDS-PAGE analysis. At Glu-A1 locus, the subunit null was most frequently appeared (96.47%). At Glu-B1 locus, the most frequent subunits were 7+8 (95.29%). Moreover, the presence of subunits 14+15, 17+18 and 2*, which associated with good quality in bread wheat, were observed. The agronomic traits were evaluated to provide information for its utilization in breeding programs. All accessions were divided into five clusters based on principle component and cluster analysis. Every cluster had its particular characteristics. The cluster1 had higher spikelet numbers per spike and grains per spike and cluster 2 had higher 1000-grain weight with lower plant height. Most of the accessions in cluster 3 were derived from Turkey.
  Wei Li , Yu-Ming Wei , Ze-Hong Yan and You-Liang Zheng
  The grain protein contents of 84 Triticum turgidum ssp. turgidum landraces from Southwest China, including Sichuan, Shanxi, Gansu, Henan and Jiangsu provinces, were investigated. Higher variability for protein contents was observed. Based on analysis of variance (ANOVA), it was found that the genotype and year had significantly effects on the protein content. The negative significant correlation between grain protein content and 1000-grains weight was detected. Significant differences of the protein contents within the groups of landraces from Gansu, Sichuan and Henan were observed, whereas no significant differences within the group of landraces from Shanxi. However, there was no significant difference between the groups of landraces from Gansu, Sichuan, Henan and Shanxi. Cluster analysis indicated that the landraces from different province could not be distinguished. According to protein content, the landraces could be divided into 6 groups. These results could be useful for the genetic resources conservation and the improvement of wheat quality.
 
 
 
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