不同播期对高粱子粒淀粉含量的影响  

Effect of Sowing Dates on the Starch Contents in Sorghum Grains

作　　者：李超[1] 肖木辑[1] 周宇飞[1] 许文娟[1] 黄瑞冬[1] 

机构地区：[1]沈阳农业大学农学院,沈阳110161

出　　处：《沈阳农业大学学报》2009年第6期708-711,共4页Journal of Shenyang Agricultural University

基　　金：国家科技支撑计划项目(2006BAD02B00);现代农业产业技术体系建设专项资金项目(2008-2012);辽宁省教育厅创新团队项目(2008T173)

摘　　要：以铁杂17号高粱为试验材料,研究了不同播期对高粱子粒淀粉含量的影响。结果表明：高粱子粒总淀粉、支链淀粉、直链淀粉含量和支链/直链淀粉比值随子粒灌浆过程推进均呈不断上升趋势,至成熟期达到最大值。其中,Ⅳ播期总淀粉、支链淀粉含量和支链/直链淀粉比值最高,为76.9%,69.1%和8.77;Ⅲ播期直链淀粉含量最高,为8.49%。适时晚播（沈阳地区在5月1020日）可提高高粱子粒总淀粉、支链淀粉含量和支链/直链淀粉比值,改善品质。高粱灌浆期气候因子的温度指标对淀粉积累具有重要影响,灌浆期间适宜淀粉积累的日平均温度为19.520.5℃。The Effect of sowing dates on the starch contents in grains of sorghum hybrid＂Tieza 17＂was studied.The results showed that total starch,amylopectin,amylose contents and amylopectin/amylose ratio increased continuously along with the advance of grain filling process and reached the maximum at maturity stage.Total starch,amylopectin contents and amylopectin/ amylose ratio inⅣsowing date were the highest,76.9%,69.1%and 8.77 respectively;amylose contents inⅢsowing date were the highest,8.49%.Suitable late sowing（May 10th to 20th in Shenyang）promoted the increase of total starch,amylopectin contents and amylopectin/amylose ratio,improving sorghum grain quality.The air temperature had a significant impact on starch accumulation during sorghum grains filling,and 19.520.5℃was suitable daily mean temperature for starch accumulation.

关 键 词：高粱 播期 淀粉含量 气候因子 

分 类 号：S514[农业科学—作物学]