水涝对向日葵(Helianthus annuus)、大豆(Glycine max)和高粱(Sorghum bicolor)产量和籽粒成分影响的临界期:比较研究

IF 3.7 2区 农林科学 Q1 AGRONOMY Journal of Agronomy and Crop Science Pub Date : 2024-09-20 DOI:10.1111/jac.12765
Miqueas N. Sandoval, Alfredo G. Cirilo, Marcelo J. Paytas, Sebastián G. Zuil, Natalia G. Izquierdo
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引用次数: 0

摘要

涝害影响着全球很大一部分耕地。向日葵、大豆和高粱的生长和产量会因渍水胁迫的时刻和持续时间而受到不同的影响。如果胁迫条件发生在确定产量潜力的关键时期(向日葵和高粱的开花期以及大豆的豆荚形成末期),则会直接减少籽粒数,但如果胁迫发生在籽粒充实期,则会影响籽粒重量。本研究的目的是确定渍水胁迫的时刻和持续时间对向日葵、大豆和高粱产量及其组成部分的影响。这些信息将有助于了解渍水对产量的影响,并根据预测的某地天气条件选择合适的作物或播种日期。为实现这一目标,在 INTA 实验站(阿根廷圣菲省雷孔奎斯塔)进行了四项实验。实验评估了积水对三种作物的影响,包括积水时间(植株期、关键期和籽粒饱满期)和持续时间(3 天、7 天和 10 天)。向日葵在无性期受涝害的负面影响最大(3、7 和 10 天的产量损失分别为 26%、78% 和 98%),而大豆在临界期受涝害的影响最大(5%-17% 的产量损失)。高粱在测试的时刻和持续时间内没有表现出任何负面反应。这项研究表明,不同作物的涝害临界期与其他胁迫的临界期不同。此外,损害的程度主要取决于事件的持续时间。还需要进一步研究,以阐明物种在涝害胁迫期间的不同生理反应。
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Critical Periods for Waterlogging Effects on Yield and Grain Components in Sunflower (Helianthus annuus), Soybean (Glycine max) and Sorghum (Sorghum bicolor): A Comparative Study

Waterlogging affects a high proportion of cultivated land worldwide. Sunflower, soybean and sorghum growth and yield can be affected differently depending on the moment and duration of waterlogging stress. If stress conditions occur during the critical period for yield potential definition (flowering in, sunflower and sorghum and end of pod formation in soybean) they directly reduce grain number, but if the stress occurs during the grain-filling period, grain weight would be affected. The aim of this study focuses on determining the effects of the moment and duration of waterlogging stress on the yield and its components in sunflower, soybean and sorghum. This information will be useful to understand the effects of waterlogging on yield and to choose a suitable crop or sowing date based on predicted weather conditions for a certain place. To achieve this objective, four experiments were conducted at the Experimental Station of INTA (Reconquista, Santa Fe, Argentina). The effect of the waterlogging in terms of moment (vegetative, critical and grain-filling periods) and duration (3, 7 and 10 days) on the three crops was evaluated. Sunflower expressed the most negative impact of waterlogging during the vegetative stages (26, 78 and 98% of yield losses with 3, 7 and 10 days, respectively) while soybean suffered major reductions when the stress occurred during the critical period (5%–17% of yield loses). Sorghum did not express any negative responses for the moments and durations tested. This study suggests that the critical period for a waterlogging event differs, according to crops, from the critical period cited for other stresses. Moreover, the magnitude of the damage will mainly depend on the duration of the event. Further studies are needed to elucidate different physiological responses of the species during waterlogging stress.

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来源期刊
Journal of Agronomy and Crop Science
Journal of Agronomy and Crop Science 农林科学-农艺学
CiteScore
8.20
自引率
5.70%
发文量
54
审稿时长
7.8 months
期刊介绍: The effects of stress on crop production of agricultural cultivated plants will grow to paramount importance in the 21st century, and the Journal of Agronomy and Crop Science aims to assist in understanding these challenges. In this context, stress refers to extreme conditions under which crops and forages grow. The journal publishes original papers and reviews on the general and special science of abiotic plant stress. Specific topics include: drought, including water-use efficiency, such as salinity, alkaline and acidic stress, extreme temperatures since heat, cold and chilling stress limit the cultivation of crops, flooding and oxidative stress, and means of restricting them. Special attention is on research which have the topic of narrowing the yield gap. The Journal will give preference to field research and studies on plant stress highlighting these subsections. Particular regard is given to application-oriented basic research and applied research. The application of the scientific principles of agricultural crop experimentation is an essential prerequisite for the publication. Studies based on field experiments must show that they have been repeated (at least three times) on the same organism or have been conducted on several different varieties.
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