中早熟玉米品种淀粉积累规律的研究

对黑龙江省东部淀粉加工企业常用的4个高淀粉中早熟玉米品种授粉后第18～63d时的淀粉含量进行分析。结果表明:中早熟玉米在授粉后第18～63d时的灌浆过程中,淀粉的积累呈上升趋势,而积累速率呈下降趋势。第18～23d淀粉积累速率最快,第28～48d增长速率较平稳。海玉8在第43d淀粉含量基本达到峰值,其余品种在第48d基本达到峰值。

Starch Accumulation Performance in Middle Early Mature Corn Cultivars

Four high starch and early mature corn cultivars,which were used commonly by the starch enterprises in the east Heilongjiang province,were analysed the accumulated performance of starch content during the stages of 18-63 days after silk.The result showed: During the filling period of 18-63 days after silk,the SC of early mature corn increased and decrease in the accumulation rate of starch.The starch accumulate rate was the fastest at the period of 18 or 23 days and then stable in the stage 28-48 days.The slower increasing rate was 43 days later for Haiyu 8 and 48 days later for others.