摘要
为了探明花后不同时期短暂高温渍水逆境对黄淮南部麦区和长江中下游麦区冬小麦品质的影响,以烟农19为材料,进行人工模拟小麦高温渍水盆栽试验。结果表明:花后短暂高温降低籽粒蛋白质累积量,提高蛋白质含量及各组分含量,降低谷醇比;降低淀粉的积累量、淀粉含量与支链淀粉含量,提高直链淀粉含量,降低支直比;提高了面粉的湿面筋含量,改善了粉质参数、拉伸参数,对糊化温度影响不显著,降低其它淀粉糊化参数。花后短暂渍水降低籽粒蛋白质积累量、蛋白质含量及其组分含量、谷醇比;降低淀粉的积累量、淀粉含量、支链淀粉含量、支直比,提高直链淀粉含量;降低了湿面筋含量,粉质参数、拉伸参数,而对糊化温度影响不显著,提高了其它淀粉糊化参数。花后短暂高温+渍水双逆境对籽粒蛋白质累积量、谷醇比、淀粉组分含量及积累量、除糊化温度的淀粉糊化参数的不良影响具有叠加效应,而对蛋白质含量及组分含量、湿面筋含量,粉质参数、拉伸参数的不良影响的叠加效应不显著,其降低幅度高于高温,低于渍水。籽粒形成期各逆境危害均大于其在乳熟期的危害。研究结果可为该区农业减灾提供参考。
A pot experiments with Yannong 19 was conducted to investigate effects of transient high temperature and waterlogging after anthesis on grain quality of winter wheat in the Southern Huanghuai and Yangtze Valley region of China. Results showed that transient high temperature after anthesis reduced protein accumulation,ratio of Glu / Gli,improved protein content and each protein ingredient content,reduced starch accumulation,increased amylose content and decreased starch content,amylopectin content,ratio of amylopectin and amylose,increased flour wet gluten content,improved farinograph parameters. The transient high temperature treatment had no significant effects on pasting temperature and had negative effects on other pasting parameters. Transient waterlogging after anthesis reduced protein accumulation, protein content and each protein ingredient content, ratio of Glu / Gli, while decreased starch accumulation,starch content,amylopectin content,and ratio of amylopectin and amylose,increased amylose content;reduced flour wet gluten content, farinograph parameters, extensograph parameters. The transient waterlogging extensograph parameters,had no significant effect on pasting temperature and increased other pasting parameters. There were significant negative interactions between high temperature and waterlogging on protein accumulation,ratio of Glu /Gli,starch accumulation and starch pasting parameters except pasting temperature and there were no significant negative interactions on protein content and each protein ingredient content,wet gluten content,farinograph parameters and extensograph parameters. According to the degree of reduce,the order was waterlogging 〉waterlogging ＋ high temperature〉 high temperature. The negative effects of each stress in grain formation stage were larger than those of in milk-ripe stage. The results could provide useful reference for reducing agricultural disaster in these regions.
出处
《核农学报》
CAS
CSCD
北大核心
2015年第10期2006-2012,共7页
Journal of Nuclear Agricultural Sciences
基金
国家自然科学基金(31071356)
安徽省教育厅自然科学基金重点项目(KJ2011A271)
皖西学院农业工程与技术中心平台(WXC201263)
关键词
高温
渍水
冬小麦
籽粒品质
high temperature
waterlogging
winter wheat
grain quality
