Pleiotropy is frequently detected in agronomic traits of wheat (Triticum aestivum). A locus on chromosome 4B, QTn/Ptn/Sl/Sns/Al/Tgw/Gl/Gw.caas-4B, proved to show pleiotropic effects on tiller, spike, and grain traits using a recombinant inbred line (RIL) population of Qingxinmai × 041133.
View Article and Find Full Text PDFHull color of foxtail millet is an important indicator of certain nutritional quality parameters. An F recombinant inbred line (RIL) population developed by crossing a yellow-hulled cultivar Yugu 5 and a brown-hulled cultivar Jigu 31 was used to determine the genetic control of the hull color trait. This population segregated for yellow and brown hull colors in a ratio of 2:1, indicating that hull color is regulated by multiple genetic loci.
View Article and Find Full Text PDFPowdery mildew is a key airborne foliar disease of barley in southeastern and southwestern China. Barley varieties usually partially or wholly lose resistance to the pathogen (DC.) f.
View Article and Find Full Text PDFA new adult plan resistance gene YrBm for potentially durable resistance to stripe rust was mapped on wheat chromosome arm 4BL in landrace Baimangmai. SSR markers closely flanking YrBm were developed and validated for use in marker-assisted selection. The wheat stripe rust pathogen Puccinia striiformis f.
View Article and Find Full Text PDFWheat genotypes resistant to powdery mildew ( f. sp. , ) provide a sustainable means for disease control.
View Article and Find Full Text PDFWinter frost has been considered the primary limiting factor in wheat production. Shimai 12 is an elite wheat cultivar grown in central and southern Hebei province of China, but sensitive to winter frost. In this study, the winter frost tolerant cultivar Lunxuan 103 was bred by introducing the recessive allele from winter wheat Shijiazhuang 8 (frost tolerance) into Shimai 12 using marker-assisted selection (MAS).
View Article and Find Full Text PDFPowdery mildew, caused by f. sp. (), is one of the most destructive foliar diseases of wheat.
View Article and Find Full Text PDFWinter wheat cultivar Liangxing 99, which carries gene , is resistant to powdery mildew at both seedling and adult-plant stages. An F recombinant inbred line population from cross Liangxing 99 × Zhongzuo 9504 was phenotyped with f. sp.
View Article and Find Full Text PDFGlume hairiness or pubescence that occurs in hexaploid common wheat and its relatives at different ploidy levels is a distinct morphological marker. Current knowledge about the genetic control of wheat glume hairiness is based on study of Hg1 (formerly Hg) on chromosome 1AS. Here, we report characterization of a new locus for hairy glume Hg2 in synthetic hexaploid wheat line CIGM86.
View Article and Find Full Text PDFPowdery mildew, which is caused by f. sp. (), is a disease of wheat worldwide.
View Article and Find Full Text PDFWheat powdery mildew is caused by f. sp. (), a biotrophic fungal species.
View Article and Find Full Text PDFThe coexistence of cereal cyst nematode (CCN) species and , often involving multiple pathotypes, is a limiting factor for wheat production in China. Some of the known genes for resistance to CCN are not effective against both nematode species, hence complicating breeding efforts to develop CCN-resistant wheat cultivars. Here, we demonstrate that the CCN resistance in wheat cultivar Madsen to both spp.
View Article and Find Full Text PDFThe gene that confers powdery mildew resistance has been previously identified on chromosome arm 4AL in Chinese wheat landrace Xuxusanyuehuang (XXSYH). To facilitate the use of in breeding practices, the bulked segregant analysis-RNA-Seq (BSR-Seq) analysis, in combination with the information on the Chinese Spring reference genome sequence, was performed in the F mapping population of XXSYH × Zhongzuo 9504. Two single nucleotide polymorphism (SNP), two Kompetitive Allele Specific PCR (KASP), and six simple sequence repeat (SSR) markers, together with previously identified polymorphic markers, saturated the genetic linkage map for , especially in the proximal side of the target gene that was short of gene-linked markers.
View Article and Find Full Text PDFA high-resolution genetic linkage map was constructed using the comparative genomics analysis approach and the wheat reference genome, which placed wheat powdery mildew resistance gene Pm52 in a 0.21-cM genetic interval on chromosome arm 2BL. The gene Pm52 confers resistance to powdery mildew and has been previously mapped on chromosome arm 2BL in winter wheat cultivar Liangxing 99.
View Article and Find Full Text PDFA single recessive powdery mildew resistance gene Pm61 from wheat landrace Xuxusanyuehuang was mapped within a 0.46-cM genetic interval spanning a 1.3-Mb interval of the genomic region of chromosome arm 4AL.
View Article and Find Full Text PDFPowdery mildew resistance gene , originating from , is effective against the prevalent f. sp. () isolates from certain regions of wheat production in China.
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