Journal
JOURNAL OF AGRONOMY AND CROP SCIENCE
Volume 195, Issue 2, Pages 89-97Publisher
WILEY
DOI: 10.1111/j.1439-037X.2008.00353.x
Keywords
high-molecular-weight glutenin subunits; protein fraction; water adversity; wheat
Categories
Funding
- National Natural Science Foundation of China [30571093, 30671216, 30700483]
- Natural Science Foundation of Jiangsu Province [BK2008329]
- International Cooperation Research Fund of Jiangsu Province [BZ2006048]
- SRFDP [20050307006]
- NCET [06-0493]
Ask authors/readers for more resources
Drought and flooding during grain filling have become major constraints to wheat quality and yield. The impacts of water deficits and waterlogging during the grain filling on contents of high-molecular-weight glutenin subunits (HMW-GS) and of glutenin macropolymers (GMP) in grains of the winter wheat cultivar Yumai 34 with high grain protein content (GPC) and Yangmai 9 with low GPC were studied. At maturity, GPC was higher under drought and lower under waterlogging compared to the control, while contents of GMP and HMW-GS were reduced by the two water-stress treatments. The contents of both HMW-GS and GMP were higher in Yumai 34 than in Yangmai 9. A drought event after anthesis increased the accumulation of HMW-GS during the early grain filling stage. By contrast, waterlogging reduced the accumulation of HMW-GS during the whole grain filling phase. At maturity, the HMW-GS and GMP to protein ratios were also depressed under the two water-stress events, while the HMW-GS to GMP ratio was very close between the three treatments in Yumai 34 and much higher under the control than the drought and waterlogging treaments in Yangmai 9. It is concluded that the variation in GMP content with various water-stress treatments is attributed to the changing in accumulation of HMW-GS in the grain.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available