[1]常晓,王小博,代华龙,等.不同氮肥利用效率类型玉米自交系的源、库特征及其筛选指标[J].江苏农业学报,2020,(05):1098-1104.[doi:doi:10.3969/j.issn.1000-4440.2020.05.004]
　CHANG Xiao,WANG Xiao-bo,DAI Hua-long,et al.Characteristics of source and sink in maize inbred lines with different nitrogen use efficiencies and their screening indices[J].,2020,(05):1098-1104.[doi:doi:10.3969/j.issn.1000-4440.2020.05.004]
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不同氮肥利用效率类型玉米自交系的源、库特征及其筛选指标()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年05期
页码:
1098-1104
栏目:
遗传育种·生理生化
出版日期:
2020-10-31

文章信息/Info

Title:
Characteristics of source and sink in maize inbred lines with different nitrogen use efficiencies and their screening indices
作者:
常晓1; 王小博1; 代华龙2; 吴嫚1; 杨兆生1; 李健1
（1.中国农业科学院棉花研究所/棉花生物学国家重点实验室，河南安阳455000；2.驻马店市气象局，河南驻马店463000）
Author(s):
CHANG Xiao1; WANG Xiao-bo1; DAI Hua-long2; WU Man1; YANG Zhao-sheng1; LI Jian1
(1.Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang 455000, China；2.Zhumadian Meteorological Bureau, Zhumadian 463000, China)
关键词:
玉米; 自交系; 氮肥利用效率; 源; 库
Keywords:
maize; inbred line; nitrogen use efficiency; source; sink
分类号:
S513
DOI:
doi:10.3969/j.issn.1000-4440.2020.05.004
文献标志码:
A
摘要:
在前期利用氮高效综合评价值将47个玉米自交系划分为4类不同氮肥利用效率类型的基础上，通过测定不同氮肥利用效率类型玉米自交系的叶面积指数、净同化率、单位叶面积小花数、单位叶面积库容量等源、库指标，研究不同氮肥利用效率类型玉米自交系源、库指标的差异及筛选影响氮肥利用效率的主要源、库指标。结果表明，吐丝期和成熟期叶面积指数及干物质积累量、灌浆结实期净同化率、库容量、单位叶面积小花数、单位叶面积库容量均表现为低氮高效型>低氮中效型>低氮低效型>低氮敏感型。相关性分析结果表明，吐丝期和成熟期叶面积指数及干物质积累量、灌浆结实期净同化率、库容量、单位叶面积小花数、单位叶面积库容量与氮高效综合评价值均呈显著正相关。多元逐步回归分析和通径分析结果表明，灌浆结实期净同化率和成熟期叶面积指数对氮高效综合评价值影响较大，因此这2个指标可作为评价氮高效型玉米材料的主要源、库指标。
Abstract:
This research was carried out on the basis of the early research which divided 47 maize inbred lines into four different types of nitrogen use efficiencies by comprehensive evaluation value of efficient nitrogen use (D value). By measuring source and sink indices such as leaf area index (LAI), net assimilation rate, panicles per unit leaf area and sink capacity per unit leaf area, the difference of source and sink indices was studied and the main indices of source and sink influencing nitrogen use efficiency were screened. The results showed that LAI and plant dry matter accumulation at silking stage and maturing stage, net assimilation rate, sink capacity, panicles per unit leaf area and sink capacity per unit leaf area at filling stage all presented as high efficient in low nitrogen > middle efficient in low nitrogen > low efficient in low nitrogen > sensitive in low nitrogen. The results of correlation analysis showed that LAI and dry matter accumulation at silking stage and maturing stage, net assimilation rate, sink capacity, panicles per unit leaf area and sink capacity per unit leaf area at filling stage had significant positive correlation with D value. The results of multiple stepwise regression analysis and path analysis showed that the net assimilation rate at filling stage and LAI at maturity stage had a great influence on the comprehensive evaluation value of efficient nitrogen use, so the two indices can be used as the main source and sink indices in evaluating the efficient nitrogen use maize materials.

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备注/Memo

备注/Memo:
收稿日期：2020-04-09基金项目：中央级公益性科研院所基本科研业务费专项（1610162020051004、1610162019050906）作者简介：常晓（1989-），女，河南安阳人，硕士，助理研究员，研究方向为作物抗逆生理。（E-mail）cx2282179@163.com通讯作者：李健，（E-mail）lijian84826@163.com
更新日期/Last Update: 2020-11-16