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通过农学和生理学评估揭示耐旱拉丁美洲爆米花品种

Uéliton Alves de Oliveira¹, Antônio Teixeira do Amaral Junior¹, Jhean Torres Leite¹

¹Plant Breeding Laboratory, Center for Agricultural Science and Technologies (CCTA), State University of Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes 28013-602, RJ, Brazil.

Life (Basel, Switzerland)

|June 27, 2024

概括

研究人员评估了43条爆米花生产线在水压下产量潜力. 线路L292显示了最高的谷物产量,而L688具有最好的爆发扩张,表明耐旱性.

科学领域:

农学和植物育种植物育种
植物生理学作物生理学
农作物中的耐压能力.

背景情况:

水压对爆米花 (Zea mays everta) 的生长,产量和质量产生重大影响.
了解爆米花的遗传变异性对于开发抗旱品种至关重要.
识别与压力下产量相关的关键农业学和生理学特征对于育种计划至关重要.

研究的目的:

评估来自拉丁美洲收藏的43条爆米花线的产量潜力和农学性能.
为了评估这些线路在水 (WW) 和缺水 (WS) 条件下.
为了确定优越的爆米花生殖质,提高干旱耐受性和繁殖的理想特征.

主要方法:

在完全灌和缺水条件下对43条爆米花线进行评估.
农学特征的测量:耳朵的长度/直径,每行谷物 (NGR),每耳的行 (NRE),谷物产量 (GY),爆发扩张 (EC),每公的体积 (VP),谷物长度 (GL),宽度和厚度.
评估生理特征:叶子中含有的叶绿素,素和黄素含量.

主要成果:

在爆米花系中观察到显著的遗传变异性和对水条件的差异性反应.
线路L292显示了最高的平均谷物产量 (GY),而线路L688显示了最高的爆发扩张 (EC),表明耐旱性.
缺水减少了叶子的绿色,但增加了素含量,这表明了适应性反应. 在两种水处理方案下,GY与VP,NGR和GL正相关.

结论:

爆米花系列L292和L688被确定为耐旱品种的有希望的候选品种.
叶子中的安东素含量可以作为植物对水应激反应的指标.
像VP,NGR和GL这样的特征对于爆米花育种计划中粮食产量的间接选择是有价值的.

关键词:

齐亚梅斯L. var. 的不同. 一切都是一样的,Everta 叶子上的绿色绿色.水资源短缺问题缺水问题

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