期刊文献+

子粒发育过程中糖分转化量对Sh2甜玉米种子活力的影响 被引量:3

Effects of Sugar of Sh2 Sweet-corn on Seed Vigor during Development
原文传递
导出
摘要 分析Sh2甜玉米品系(4份自交系和其测交组合)子粒发育过程中果糖、蔗糖含量及种子百粒重、种子物质利用率和种子活力等指标,探讨Sh2甜玉米子粒发育过程中糖分转化机制对种子活力的影响。结果表明,在Sh2甜玉米子粒发育过程中,淀粉不断累积,从授粉至收获果穗(乳熟期),子粒中蔗糖>果糖含量,且4个品系间存在显著差异。蔗糖含量是从授粉后7 d高位迅速下降,到35 d左右保持稳定,后期又有所下降;果糖是早期高,中期稳定,后期下降。在发育早期,子粒中糖分含量为淀粉含量的9.17~21.59倍;到发育后期,子粒中糖分含量是淀粉含量的1.27~3.02倍。相关分析表明,种子活力指数与种子物质利用率正相关,蔗糖转化量与子粒淀粉含量呈显著负相关(P<0.05),果糖转化量与种子物质利用率呈显著正相关(P<0.01),种子活力指数与蔗糖转化量、果糖转化量相关不显著。 In order to explore the relationship of sugar transformation and seed vigor during germination,the seed weight,sugar content,seed reserve utilization efficiency of four Sh2 sweet-corn varieties were analyzed in this study.The results showed that in the milk-ripe stage(from pollination to harvest grain)the starch accumulated in parabola shape and sucrose content is bigger than fructose content that were significant differences between four strains.The sucrose content decreased rapidly from 7 d to 35 d,and then decreased at the later stage.On the other hand,fructose content was high in the early stage and stable in the middle stage and decreased in the later stage.At the early stage of development,the content of sugar in grains was 9.17-21.59 times that of starch and at the later stage of development,the content of sugar in grains was only 1.27-3.02 times that of starch.Correlation analysis showed that seed vigor index is positively correlated with seed reserve utilization efficiency,sugar transformation is negatively related to the grain starch(P<0.05)and there is a significant positive correlation between fructose transformation and seed reserve utilization efficiency(P<0.01)and there is not significant between the seed vigor index&sucrose transformation and fructose transformation.
作者 程昕昕 吴翔 熊风 周毅 余海兵 CHENG Xin-xin;WU Xiang;XIONG Feng;ZHOU Yi;YU Hai-bing(Anhui Science and Technology University,Fengyang 233100,China)
出处 《玉米科学》 CAS CSCD 北大核心 2019年第5期81-86,共6页 Journal of Maize Sciences
基金 国家自然科学基金委员会应急管理项目(31440066) 安徽省教育厅自然科学重点项目(KJ2016A824) 安徽科技学院稳定人才项目、安徽科技学院大学生创新课题(2017s10879078,S201910879055)
关键词 甜玉米 糖分转化 种子活力 种子物质利用率 Sweet corn Sugar transformation Seed vigor Seed reserve utilization efficiency
  • 相关文献

参考文献8

二级参考文献92

共引文献99

同被引文献52

引证文献3

二级引证文献11

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部