影响夏玉米生理成熟后子粒脱水的相关因素分析  

Analysis of Factors Affecting the Kernel Dehydrating after Physiological Mature in Summer Maize

作　　者：雷蕾[1,2] 王威振[1] 方伟[1] 张子学[1] 刘正[1] 李文阳[1] 

机构地区：[1]安徽科技学院农学院,安徽省玉米育种工程技术研究院,安徽凤阳233100 [2]中国农业科学院作物科学研究所,北京100081

出　　处：《玉米科学》2016年第3期103-109,共7页Journal of Maize Sciences

基　　金：国家自然科学基金项目(31501271);国家星火计划项目(2014GA710004);安徽省教育厅重大项目(KJ2014ZD10)

摘　　要：以26个夏玉米杂交种为材料,分析不同玉米杂交种收获时子粒含水量及影响生理成熟后子粒脱水速率的粒型、主要成分含量等相关因素。结果表明,不同玉米杂交种在收获期子粒含水量、生理成熟后平均脱水速率、阶段性脱水速率、粒型、主要成分含量等方面均存在极显著差异。子粒生理成熟后不同阶段脱水速率间比较,前期脱水速率>中期脱水速率>后期脱水速率。相关分析表明,收获期子粒含水量与粒型(粒长×粒厚/粒宽)、子粒淀粉含量呈显著负相关,与子粒脂肪含量呈极显著正相关。表明生理成熟后脱水较快品种的理想粒型为较高的粒型参数值。Twenty-six summer maize hybrids were used as the material, kernel moisture content at harvest andkernel type, main components and other related influencing factors among different maize hybrids were analyzed.The results showed that there were extremely significant differences among maize hybrids in kernel moisture contentat harvest, average kernel dehydration rate after physiological mature stage, dehydration rate in different stages, ker-nel type and main components content. The results indicated that early dehydration rate medium-term dehydra-tion rate later dehydration rate while studied on the dehydration rate in different stages. Correlation analysis re-sults indicated that there was significantly negative correlation between kernel moisture content at harvest and ker-nel type（length×thickness/width）, kernel starch content, there was significantly positive correlation between mois-ture content and fat content in the kernel.

关 键 词：夏玉米 生理成熟期 脱水速率 相关分析 

分 类 号：S513.01[农业科学—作物学]