[Effects of salt and waterlogging stress at post-anthesis stage on wheat grain yield and quality].
A pot experiment was conducted to study the effects of salt (ST), waterlogging (WL), and their combination (SW) at post-anthesis on the grain yield and its starch and protein components of wheat cultivars Yangmai 12 and Huaimai 17. Comparing with the control, treatments ST, WL, and SW, especially ST and SW, decreased the allocation of nitrogen and carbon assimilates at pre- and post-anthesis to the grains significantly, resulting in an obvious decrease of grain yield and its protein and starch contents. Both ST and SW had significant negative effects on the glutenin/gliadin and amylase/amylopectin ratios in the grains, compared to CK and WL. Yangmai 12 was more sensitive to ST than SW, while Huaimai 17 was in adverse. WL decreased the accumulation of protein and starch in the grains of the two cultivars. Except that the glutenin and albumin in Huaimai 17 had some increase, the globulin and gliadin in Huaimai 17 and all protein components in Yangmai 12 were decreased under WL.
Zheng
Chun-Fang
CF
Ministry of Agriculture Key Laboratory of Crop Physiology and Ecology in Southern China, Hi-Tech Key Laboratory of Information Agriculture of Jiangsu Province, Nanjing Agricultural University, Nanjing 210095, China. zcfa66@sina.com
Jiang
Dong
D
Dai
Ting-Bo
TB
Jing
Qi
Q
Cao
Wei-Xing
WX
D002523:Edible Grain / Q000254:growth & development / Q000378:metabolism; D035264:Flowers / Q000254:growth & development; D009584:Nitrogen / Q000378:metabolism; D010940:Plant Proteins / Q000032:analysis / Q000378:metabolism*; D012492:Salts / Q000494:pharmacology*; D013213:Starch / Q000032:analysis*; D013312:Stress, Physiological; D014908:Triticum / Q000254:growth & development* / Q000378:metabolism; D014867:Water / Q000378:metabolism*
D010940:Plant Proteins; D012492:Salts; D014867:Water; D013213:Starch; D009584:Nitrogen