Variation in concentrations of high-molecular-weight glutenin subunits and macropolymers in wheat grains of a recombinant inbred lines population and in two contrasting eco-sites in China
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BACKGROUND: Concentrations of high-molecular-weight glutenin subunits andmacropolymers in wheat grains are important indicators of grain quality, which are genetically determined and affected by environmental factors. The 6 VS·6AL translocation chromosome segment is reported to own high powdery mildew and yellow rust resistance genes of Pm21 and Yr26. This study
investigated the variation in concentrations of high-molecular-weight glutenin subunits (HMW-GS) and gluteninmacropolymer (GMP) in response to the 6 VS·6AL translocation segment and the two contrasting sites.
RESULTS: Large variations in concentrations of HMW-GS and GMP were observed within lines containing different HMW-GS compositions and between the contrasting eco-sites. However, 6 VS·6AL chromosome translocation segment showed no significant effects on concentrations ofHMW-GSandGMP. In addition,HMW-GSconcentration was also found to be significantly
correlated with the GMP concentration.
CONCLUSION: Concentrations of HMW-GS andGMPare largely affected by the eco-sites and the composition ofHMW-GS, whilst not by the presence of 6 VS·6AL chromosome segment translocation. The 6 VS·6AL translocation is suggested as potential donor for breeding wheat cultivars for high resistence to powdery mildew and yellow rust with less risk of undesirable effects on grain quality.
c 2012 Society of Chemical Industry Supporting information may be found in the online version of this article.
investigated the variation in concentrations of high-molecular-weight glutenin subunits (HMW-GS) and gluteninmacropolymer (GMP) in response to the 6 VS·6AL translocation segment and the two contrasting sites.
RESULTS: Large variations in concentrations of HMW-GS and GMP were observed within lines containing different HMW-GS compositions and between the contrasting eco-sites. However, 6 VS·6AL chromosome translocation segment showed no significant effects on concentrations ofHMW-GSandGMP. In addition,HMW-GSconcentration was also found to be significantly
correlated with the GMP concentration.
CONCLUSION: Concentrations of HMW-GS andGMPare largely affected by the eco-sites and the composition ofHMW-GS, whilst not by the presence of 6 VS·6AL chromosome segment translocation. The 6 VS·6AL translocation is suggested as potential donor for breeding wheat cultivars for high resistence to powdery mildew and yellow rust with less risk of undesirable effects on grain quality.
c 2012 Society of Chemical Industry Supporting information may be found in the online version of this article.
Originalsprog | Engelsk |
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Tidsskrift | Journal of the Science of Food and Agriculture |
Vol/bind | 92 |
Udgave nummer | 10 |
Sider (fra-til) | 2188-2194 |
Antal sider | 7 |
ISSN | 0022-5142 |
DOI | |
Status | Udgivet - 2012 |
ID: 38305818