[1]华鹤良,赵青,李国生,等.玉米籽粒灌浆特性及其与茎秆糖分的关系[J].江苏农业学报,2018,(06):1239-1246.[doi:doi:10.3969/j.issn.1000-4440.2018.06.006]
　HUA He-liang,ZHAO Qing,LI Guo-sheng,et al.Kernel filling characteristics and their relationship with stalk sugar content in maize[J].,2018,(06):1239-1246.[doi:doi:10.3969/j.issn.1000-4440.2018.06.006]
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玉米籽粒灌浆特性及其与茎秆糖分的关系()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年06期
页码:
1239-1246
栏目:
遗传育种·生理生化
出版日期:
2018-12-25

文章信息/Info

Title:
Kernel filling characteristics and their relationship with stalk sugar content in maize
作者:
华鹤良1; 2; 赵青1; 李国生2; 3; 曹振奇1; 王杰1; 卞云龙1
（1.扬州大学粮食作物现代产业技术协同创新中心/教育部植物功能基因组学重点实验室，江苏扬州225009；2.扬州大学实验农牧场，江苏扬州225009；3.扬州市扬大康源乳业有限公司，江苏扬州225004）
Author(s):
HUA He-liang1; 2; ZHAO Qing1; LI Guo-sheng2; 3; CAO Zhen-qi1; WANG Jie1; BIAN Yun-long1
（1.Co-Innovation Center for Modern Production Technology of Grain Crops/Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China;2.Experimental Farm of Yangzhou University, Yangzhou 225009, China;3.Yanghzou Yangda Kangyuan Dairy Ltd.,Yangzhou 225004, China）
关键词:
玉米; 果穗不同粒位籽粒; 灌浆速率; 茎秆糖含量
Keywords:
maize; kernels at different positions on an ear; grain filling rate; stalk sugar content
分类号:
S513
DOI:
doi:10.3969/j.issn.1000-4440.2018.06.006
文献标志码:
A
摘要:
籽粒充实的优劣直接关系到粒质量和产量高低，以先玉335和郑单958及其亲本为材料，研究玉米果穗不同粒位籽粒灌浆特性并分析灌浆速率（平均）与茎秆糖分的关系。就不同粒位籽粒灌浆速率而言，上部最低，峰值时，上部与中部、下部差异最大,中部、下部差异较小，峰值前下部高于中部，峰值后下部稍低于中部。灌浆速率基本都表现低-高-低的变化趋势，但也存在基因型差异。不同粒位籽粒含水量都表现为下部＞中部＞上部，中部、下部差异较小；随着灌浆期的延长，籽粒含水率均呈逐渐下降趋势。茎秆糖分与灌浆速率之间存在密切关系，随着灌浆速率提高，茎秆糖分呈下降趋势；茎秆糖消耗量最大时，灌浆速率基本上处于峰值。
Abstract:
The advantages and disadvantages of grain filling are directly related to the grain weight and the yield of different varieties. Two maize hybrids Xianyu 335 and Zhengdan 958 and their parents were used as the materials to analyze kernel filling characteristics and their relationship with stalk sugar content in maize. The result showed that the filling rate of the apical kernels was lower than that of the middle and basal kernels and the difference was in maximum when filling rate reached its peak value. Futhermore, the relative difference between the middle and basal kernel filling rate was small. However, before the peak value, the filling rate of basal kernel was higher than that of middle, and after the peak value, the filling rate of basal kernel was a little bit lower than that of middle. The kernel filling rates basically presented the tendency of low-high-low, but the genotype differences were also existed. The water content of kernels at the different positions of the ear in the basal position was bigger than that in the middle position, and that in the middle position was bigger than that in the apical. The difference of water content in kernels between the middle and the basal position was small. With the extension of the kernel filling period, the moisture content rate of kernels decreased gradually. The sugar content of stalk had a close relationship with the kernel filling rate, with the increase of grain filling rate, the sugar content of stem decreased. When the consumption of the stalk sugar was in maximum value, the filling rate of kernels was basically at its peak value.

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备注/Memo

备注/Memo:
收稿日期：2018-03-14 基金项目：国家自然科学基金项目(31071426)；江苏省科学基金项目（BK20171291）；扬州市科技项目（YZ2015031） 作者简介：华鹤良（1964-），男，博士，高级农艺师，主要从事玉米品种选育及推广工作。（E-mail）hlhua@yzu.edu.cn 通讯作者：卞云龙，（E-mail）ylbian@yzu.edu.cn
更新日期/Last Update: 2018-12-28