中国农业科学Issue(21)：4435-4445,11.DOI:10.3864/j.issn.0578-1752.2013.21.005
淹水胁迫对夏玉米籽粒灌浆特性和品质的影响
Effect of Waterlogging on Grain Filling and Quality of Summer Maize
摘要
Abstract
[Objective]This study is to investigate the effects of waterlogging on grain filling characteristics and quality of summer maize under field conditions.[Method]Two summer maize cultivars, Denghai605(DH605) and Zhengdan958(ZD958), were used as experimental materials. The field experiment was performed to explore the effects of waterlogging in different durations (3 and 6 days) on grain dry weight and volume, grain filling parameters, and grain quality of summer maize stalk at the three-leaf stage (V3), six-leaf stage (V6), and ten days after the tasseling stage (10VT).[Result]Results showed that the grain dry weight growth rate and grain filling parameters reduced significantly after waterlogging, and the decrease of two cultivars was the most in the treatment of waterlogging at V3 for 6 days. Days of maximum grain filling (Tmax), maximum grain filling (Gmax), weight of maximum grain filling rate (Wmax), and active grain filling period (P) of DH605 decreased by 25.18%, 18.44%, 48.21%, and 36.45%, while that of ZD958 decreased by 18.18%, 1.69%, 32.68% and 31.80%, respectively. Waterlogging increased barrenness, and decreased grain yield, kernel number per ear and 1000-grain weight, and the response to different waterlogging treatments showed:waterlogging at V3>waterlogging at V6>waterlogging at 10VT and waterlogging for 6 days>waterlogging for 3 days. Waterlogging significantly decreased grain crude protein, total starch, grain total soluble sugar and sucrose content. The decrease of amylopectin and increase of amylase led to the decrease of their ratio;the decrease of grain crude fat content of two cultivars was the most in the treatment of waterlogging at V3 for 6 days, with 49.08%in DH605 and 33.08%in ZD958. [Conclusion] Waterlogging significantly reduced Gmax and Wmax, suppressed the grain-filling with decrease of accumulation grain dry matter, resulted in lower yields. Waterlogging decreased the grain soluble total sugar, sucrose and starch content. Grain protein content and the ratio of amylopectin and amylose significantly reduced after waterlogging, while the crude fat content increased significantly. It was most susceptible to be waterlogged at V3, followed by V6 and 10VT, and decreased with the increase of waterlogging duration.关键词
夏玉米/淹水胁迫/籽粒灌浆特性/产量/品质Key words
summer maize/waterlogging/grain filling characteristics/grain yield/quality引用本文复制引用
任佰朝,张吉旺,李霞,范霞,董树亭,赵斌,刘鹏..淹水胁迫对夏玉米籽粒灌浆特性和品质的影响[J].中国农业科学,2013,(21):4435-4445,11.基金项目
国家公益性行业（农业）科研专项（200903003）、山东省现代农业产业技术体系项目、国家粮食丰产科技工程课题 （）
