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快速有效地识别热带玉米的亲生品种,这些品种能够耐受水浸压力

Sittal Thapa¹, Tosh Garg¹, Rumesh Ranjan²

¹Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, India.

Scientific reports

|January 21, 2025

概括

浸水严重影响玉米产量. 研究人员确定了根干重作为选择耐水浸玉米基因型的关键指标,提高了作物弹性.

科学领域:

植物科学植物科学
农业学是一种农业学.
压力生理学压力生理学

背景情况:

浸水 (Waterlogging,简称WL) 是一种主要的非生物压力,影响植物生长,叶绿素降解和产量,特别是在玉米中.
缺乏有效的选方法来识别耐水浸的玉米基因型,这阻碍了育种工作.

研究的目的:

评价120种玉米杂交品种在预产和苗木阶段的浸水耐受性.
确定可靠的参数和选择指数,以有效选耐浸水玉米.

主要方法:

在浸水条件下评估了发芽和生存率.
使用的会员函数值和宽容系数用于树枝和根特征.
采用数学模型,选择指数 (BLPSI,ESIM,MTSI),并将根干重确定为一个关键参数.

主要成果:

发芽前的耐受性被发现是独立于幼苗阶段的耐受性.
根干重量成为评估浸水耐受性的单一可靠参数.
玉米生产线I 185,I 172和SE 503被确定是耐受水浸的.

结论:

根干重是选择耐水浸玉米的强有力的指标.
综合选择方法提高了识别优质基因型的效率.
该研究为玉米育种计划提供了一个快速有效的策略,旨在针对水浸压力.

关键词:

齐亚梅斯 (Zea mays) 是一种植物.基本线性表型选择指数 (BLPSI)自主选择指数模型 (ESIM)会员功能价值会员的功能价值.多特征稳定性指数 (MTSI) 是指多特征稳定性指数.在水中浸泡,使水淹没.

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