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Information and knowledge outputs of Genetic Resources Program (GRP) and its projects. Includes germplasm collections, wild relatives, genotyping, genomics, and intellectual property rights.
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Browsing Genetic Resources by Subject "1B/1R Translocation"
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- Effect of HMW and LMW glutenin subunits and presence of 1BL/1RS translocation on quality traits in spring wheat(Institute of Crop Sciences, 2005) Chen Dong-Sheng; Liu Li; Dong Jiarr-Li; He Zhonghu; Zhang, Y.; Liu Jiarr-Jun; Desen WangThe composition of high molecular weight glutenin subunits ( HMW2GS) and low molecular weight glutenin subunits (LMW2GS) , and the presence or absence of 1BLΠ1RS translocation play an important role in determination of wheat quality1 Totally , 221 spring wheat cultivars and advanced lines were used to survey the composition of HMW2GS and LMW2GS , and the presence of 1BLΠ1RS translocation1 Effects of allelic variation in HMW2GS and LMW2GS and 1BLΠ1RS translocation on quality traits were investigated in 104 cultivars and lines1 The results showed that subunits 1 , 7 + 9 , 5 + 10 , GluA3a and GluB3j took dominant positions with frequencies of 5715 %, 4512 % , 6318 % , 2910 % and 4215 % , respectively, and 4413 % of tested genotypes from Northwestern Spring Wheat Region ( NWSWR) and 3412 % from Northeastern Spring Wheat Region (NESWR) carried 1BΠ1R translocation (Table 1) 1 Allelic variation at Glu21 and Glu23 loci had significant influence on SDS sedimentation volume , and mixing time and mixing tolerance at 1 probability level, and on kernel protein content and relative insoluble glutenin content at 5 % significant level (Table 2) 1 According to the allele contribution to mixing time and mixing tolerance , the glutenin subunit loci were ranked as : Glu2D1 > Glu2B3 > Glu2B1 > Glu2A1 > Glu2A3 ( Table 3) . Various individual glutenin alleles had significant effect on quality traits, specially on gluten strengthen related parameters1 They were ranked as : at Glu2A1 loci ,1 ,2 3 > N , at Glu2D1 ,5 + 10 > 2 + 12 , at Glu2A3 , Glu2A3d > Glu2A3b > Glu2A3c > Glu2A3a ,at Glu2B3 , Glu2B3f > Glu2B3b > Glu2B3j (Table 3). The contribution of subunits 1, 2 3, 5 + 10 , Glu2A3d , Glu2B3f to mixing time and mixing tolerance are significantly larger than their counterpart allelic variations1 The presence of 1BΠ1R translocation had a strong and negative effect on mixing time1 The mixing time of non21BLΠ1RS cultivars and lines was 319 min while 1BLΠ1RS translocation was 315 min.
Publication - Marker-assisted selection of HMW-Glutenin 1Dx5+1Dy10 gene and 1B/1R translocation for improving industry quality in common wheat(Institute of Crop Sciences, 2012) Yong Zhang; Shen Xiao-Yong; Zhang Wen-Xiang; Xinmin Chen; Yan Jun; Zhang, Y.; Desen Wang; Wang Zhong-Wei; Liu Yue-Fang; Tian Yu-Bing; Xianchun Xia; He ZhonghuGlutenin subunits play an important role in determining processing quality in common wheat. In this study, a total of 125 BC2F4 lines derived from four populations by marker-assisted backcrossing, with Yumai 34, Gaocheng 8901, and Zhongyou 9507 as quality donor and Lunxuan 987, Shi 4185, and Zhoumai 16 as recipients, were used to assess the effect of glutenin subunit 5+10 and 1B/1R translocation on quality parameters including protein content, mixograph mixing time and peak integral. A wide range of variation for all quality parameters in the populations was detected. Lines with 1Dx5+1Dy10 performed significantly longer mixing time and higher peak integral than those with alleles 1Dx2+1Dy12, while the genetic background of parents had a large impact on mixing time and peak integral among 1B/1R translocation lines. Reversed-phase high-performance liquid chromatography (RP-HPLC) revealed that mixing time and peak integral were related with the quantity of glutenin subunit fractions, and significant and positive correlations between mixing time, peak integral and the quantity of LMW-GS were observed, with correlation coefficients ranging from 0.38 to 0.74 (P < 0.05). Lines with 1Dx5+1Dy10 also performed significantly higher quantity of both HMW-GS and LMW-GS than those with alleles 1Dx2+1Dy12, while the effect of alleles at Glu-B3 locus on quantity of HMW-GS was insignificant, and that on quantity of LMW-GS varied among the populations. It would be efficient to select new line through backcross with quality parent as donor and high yield parent as recipient, by marker-assisted selection of Glu-D1d gene and 1B/1R translocation, in combination with field selection on agronomic parameters.
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