Shanghua No.6, a new peanut variety with high shelling percentage and bigfruit, was bred through sexual hybridization（female parent Pukehua No.2 × male parent Yuanza 9102） by Shangqiu Academy of Agriculture and...Shanghua No.6, a new peanut variety with high shelling percentage and bigfruit, was bred through sexual hybridization（female parent Pukehua No.2 × male parent Yuanza 9102） by Shangqiu Academy of Agriculture and Forestry Sciences. In the big peanut regional tests in north China in 2011-2012, Shanghua No.6 had the average yield of pod and seed respectively of 4 695.30 kg/hm^2 and 3 514.73 kg/hm^2;in the production test in 2013, its average yield of pod and seed were 4 531.0 5kg/hm^2 and 3 312.15 kg/hm^2. Its crude fat content was 50.46-53.46%, oleic acid content was 50.9-51.7%, and oil oleic acid/linoleic acid value was 1.69-1.76. The variety was high-resistant to brown spot and focal spot, susceptible to black spot,resistant to net blotch and stem rot. Its 100-pod weight was 256.2 g, 100-seed weight 111.2 g, and shelling percentage was 74.75%. The variety was certificated by National Crop Variety Approval Committee in 2014（identification number：2014010）, which was suitable for planting in Shandong, Henan, Hebei, Liaoning,Beijing, north of Huaihe River in Jiangsu and Anhui provinces.展开更多
Peanut is a major oilseed and food legume.Shelling percentage(SP),closely associated with seed yield,is a trait whose improvement is a major goal of peanut breeding.In this study,a mapping population(Xuhua 13×Zho...Peanut is a major oilseed and food legume.Shelling percentage(SP),closely associated with seed yield,is a trait whose improvement is a major goal of peanut breeding.In this study,a mapping population(Xuhua 13×Zhonghua 6)was used to map quantitative trait loci(QTL)controlling SP in four environments.Two stable major QTL for SP were mapped on both SSR-and SNP-based genetic maps.q SPA07.1 on chromosome A07 explained up to 31.7%of phenotypic variation,and q SPA08.2 on chromosome A08 explained up to 10.8%.Favorable alleles of q SPA07.1 and q SPA08.2 were derived from the female and male parents,respectively.Eight recombinant inbred lines(RILs)carrying both favorable alleles showed superiority in SP over the two parents in all environmental trials.A combination of the two favorable alleles using the linked markers was verified to increase SP by~5%in the RIL population and by~3%SP in diverse peanut cultivars.q SPA07.1 and q SPA08.2 were delimited to respectively a 0.73-Mb interval harboring 96 genes and a 3.93-Mb interval harboring 238 genes.Respectively five and eight genes with high expression in pods,including enzymes and transcription factors,were assigned as candidate genes for q SPA07.1 and q SPA08.2.These consistent major QTL provide an opportunity for fine mapping of genes controlling SP,and the linked markers may be useful for genetic improvement of SP in peanut.展开更多
基金Supported by the Special Fund for the Agriculture Research System of Peanut of Henan Province(S2012-05-G01)the Key Scientific and Technological Project of Henan Province(141100110600)~~
文摘Shanghua No.6, a new peanut variety with high shelling percentage and bigfruit, was bred through sexual hybridization（female parent Pukehua No.2 × male parent Yuanza 9102） by Shangqiu Academy of Agriculture and Forestry Sciences. In the big peanut regional tests in north China in 2011-2012, Shanghua No.6 had the average yield of pod and seed respectively of 4 695.30 kg/hm^2 and 3 514.73 kg/hm^2;in the production test in 2013, its average yield of pod and seed were 4 531.0 5kg/hm^2 and 3 312.15 kg/hm^2. Its crude fat content was 50.46-53.46%, oleic acid content was 50.9-51.7%, and oil oleic acid/linoleic acid value was 1.69-1.76. The variety was high-resistant to brown spot and focal spot, susceptible to black spot,resistant to net blotch and stem rot. Its 100-pod weight was 256.2 g, 100-seed weight 111.2 g, and shelling percentage was 74.75%. The variety was certificated by National Crop Variety Approval Committee in 2014（identification number：2014010）, which was suitable for planting in Shandong, Henan, Hebei, Liaoning,Beijing, north of Huaihe River in Jiangsu and Anhui provinces.
基金the National Natural Science Foundation of China(31870319,31871666,and 31801403)China Agriculture Research System(CARS-13)+2 种基金National Program for Crop Germplasm Protection of China(2020NWB033)National Crop Germplasm Resources Center(NCGRC-2020-036)Central Public-interest Scientific Institution Basal Research Fund(Y2021CG05)。
文摘Peanut is a major oilseed and food legume.Shelling percentage(SP),closely associated with seed yield,is a trait whose improvement is a major goal of peanut breeding.In this study,a mapping population(Xuhua 13×Zhonghua 6)was used to map quantitative trait loci(QTL)controlling SP in four environments.Two stable major QTL for SP were mapped on both SSR-and SNP-based genetic maps.q SPA07.1 on chromosome A07 explained up to 31.7%of phenotypic variation,and q SPA08.2 on chromosome A08 explained up to 10.8%.Favorable alleles of q SPA07.1 and q SPA08.2 were derived from the female and male parents,respectively.Eight recombinant inbred lines(RILs)carrying both favorable alleles showed superiority in SP over the two parents in all environmental trials.A combination of the two favorable alleles using the linked markers was verified to increase SP by~5%in the RIL population and by~3%SP in diverse peanut cultivars.q SPA07.1 and q SPA08.2 were delimited to respectively a 0.73-Mb interval harboring 96 genes and a 3.93-Mb interval harboring 238 genes.Respectively five and eight genes with high expression in pods,including enzymes and transcription factors,were assigned as candidate genes for q SPA07.1 and q SPA08.2.These consistent major QTL provide an opportunity for fine mapping of genes controlling SP,and the linked markers may be useful for genetic improvement of SP in peanut.
