热带玉米(Zea mays L.)自交系及其单交杂交种耐高密度胁迫的生产力评价

IF 1 4区 生物学 Q3 PLANT SCIENCES
A. Sarkar, S. Sandhu, L. Pal, Ashutosh Kushwah, Mahesh Kumar
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引用次数: 1

摘要

高密度种植(HDP)已被广泛用于实现温带玉米的高产,热带/亚热带玉米也可利用高密度种植。基于对不同种植制度下热带玉米自交系两年的田间评价,本研究确定了高密度耐胁迫(植株群体比栽培高30%)的高产玉米自交系。穗上第一片叶的叶角、开花吐丝间隔、穗轴长度和1000粒重直接影响HDP下的籽粒产量。确定了在HDP下表现出比正常种植方式更高的粮食产量(约15-20%)的特定杂交组合。这是第一篇关于在高植物群体下系统开发和评价亲本系并在热带玉米中产生高植物密度耐胁迫杂交种的报告。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Productivity-based assessment of tolerance to high plant density stress in tropical maize (Zea mays L.) inbred lines and their single cross hybrids
High density planting (HDP) has been used extensively to achieve high productivity in temperate maize and the same can be exploited in tropical/subtropical maize. Based on two years field evaluation of tropical maize inbred lines under different planting regimes, this study led to identification of high plant density stress tolerant (at 30 percent higher plant population than cultural practice) high yielding maize inbreds. Leaf angle of first leaf above ear, anthesis-silking interval, cob length, and 1000 kernel weight were found directly affecting grain yield under HDP. Specific cross combinations exhibiting higher grain yield under HDP (approx. 15-20 percent), than normal planting practices, were identified. This is the first report on systematic development and evaluation of parental lines under high plant population and to generate high plant density stress tolerant hybrids in tropical maize.
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来源期刊
CiteScore
1.80
自引率
10.00%
发文量
0
审稿时长
6-12 weeks
期刊介绍: Advance the cause of genetics and plant breeding and to encourage and promote study and research in these disciplines in the service of agriculture; to disseminate the knowledge of genetics and plant breeding; provide facilities for association and conference among students of genetics and plant breeding and for encouragement of close relationship between them and those in the related sciences; advocate policies in the interest of the nation in the field of genetics and plant breeding, and facilitate international cooperation in the field of genetics and plant breeding.
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