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不同播期对高梁子粒淀粉含量的影响
引用本文:李超,肖木辑,周宇飞,许文娟,黄瑞冬.不同播期对高梁子粒淀粉含量的影响[J].沈阳农业大学学报,2009,40(6).
作者姓名:李超  肖木辑  周宇飞  许文娟  黄瑞冬
作者单位:沈阳农业大学,农学院,沈阳,110161
基金项目:国家科技支撑计划项目,现代农业产业技术体系建设专项资金项目,辽宁省教育厅创新团队项目 
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10~20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.改善占占质.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19.5~20.5℃.

关 键 词:高粱  播期  淀粉含量  气候因子

Effect of Sowing Dates on the Starch Contents in Sorghum Grains
LI Chao,XIAO Mu-ji,ZHOU Yu-fei,XU Wen-juan,HUANG Rui-dong.Effect of Sowing Dates on the Starch Contents in Sorghum Grains[J].Journal of Shenyang Agricultural University,2009,40(6).
Authors:LI Chao  XIAO Mu-ji  ZHOU Yu-fei  XU Wen-juan  HUANG Rui-dong
Abstract: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 in Ⅳ sowing date were the highest, 76.9%, 69.1% and 8.77 respectively; amylosc contents in Ⅲ sowing 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 19.5~20.5℃ was suitable daily mean temperature for starch accumulation.
Keywords:sorghum  sowing date  starch content  climatic factor
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