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Grain yield is one of the most important and complex quantitative traits in maize breeding. In the present study, a total of 11 connected RIL populations, derived from crosses between elite inbreed “Huangzaosi” as the common parent and 11 elite inbreeds, were evaluated for five yield components and kernel-related traits under six environments. Quantitative trait loci (QTL) were detected for the traits...
The wild species, Secale africanum Stapf., serves as a valuable germplasm resource for increasing the diversity of cultivated rye (Secale cereale L.) and providing novel genes for wheat improvement. The objective of this study was to identify new wheat-S. africanum chromosome 2Rafr derivatives by molecular markers and in situ hybridization, and to test the effects of centric translocations of S. africanum...
Quantitative trait loci (QTLs) with additive (a), additive × additive (aa) epistatic effects, and their treatmental interactions (at and aat) were studied under salt stress and normal conditions at seedling stage of wheat (Triticum aestivum L.). A set of 182 recombinant inbred lines (RILs) derived from cross Xiaoyan 54 × Jing 411 were used. A total of 29 additive QTLs and 17 epistasis were detected...
A new wheat-Thinopyrum substitution line AS1677, developed from a cross between wheat line ML-13 and wheat-Thinopyrum intermedium ssp. trichophorum partial amphiploid TE-3, was characterized by fluorescence in situ hybridization (FISH), sequential Giemsa-C banding, genomic in situ hybridization (GISH), seed storage protein electrophoresis, molecular marker analysis and disease resistance screening...
To better understand molecular evolution of the large α-gliadin gene family and provide a potential value for wheat quality improvement, total 32 α-gliadin gene sequences were isolated from the two Dasypyrum species, D. villosum. (L.) Candargy and D. breviaristatum (Lindb. F.) Frederisksen. Twelve of 32 sequences contained the in-frame stop condons were predicted to be pseudogenes, suggesting the...
A genome specific DNA sequence that detects Secale africanum chromatin incorporated into wheat was developed in this study. Random amplified polymorphic DNA (RAPD) analysis was used to search for genome specific DNA sequences of S. africanum in lines, R111, “mianyang11” (MY11) and wheat-rye 1RS/1BL translocations R25 and R57. A high copy rye-specific DNA segment pSaD15940 of the S. africanum genome...
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