Tolerance of soybean cultivars to flooding stress in vegetative growth stages

IF 0.7 4区农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY

Pesquisa Agropecuaria Brasileira Pub Date : 2023-06-26 DOI:10.1590/s1678-3921.pab2023.v58.03058

P. Goergen, S. J. Lopes, A. Zanon, I. Lago, Valéria Pohlmann, Menigui Spanevello Dalcin, Pâmela Nunes Bittencourt, Vanessa Gonçalves Saccol

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引用次数: 1

Abstract

Abstract The objective of this work was to evaluate the tolerance of soybean (Glycine max) cultivars to flooding stress at different growth stages. The experiment was arranged in a 2x2x5 factorial arrangement, with two sowing dates (October and November), two soybean cultivars (TECIRGA 6070RR and NA 5909 RG), and five growth stages (SE-EM, EM-VC, VC-V2, V2-V4, and V6-V8) in the 2018/2019 and 2019/2020 crop years. The experimental design was completely randomized with four replicates. For both evaluated soybean cultivars, the growth stage most sensitive to soil flooding was SE-EM. After seedling emergence, the highest reductions in leaf area and shoot dry matter were observed in the V2-V4 stage, regardless of cultivar, sowing date, and crop year. From the V4 stage onwards, soybean shows a higher tolerance to flooding conditions. However, after seedling emergence, the TECIRGA 6070RR cultivar has a higher tolerance to flooding stress than NA 5909 RG. Sowing in October tends to reduce the impact of flooding stress on the plants.

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大豆品种营养生长期对水淹胁迫的耐受性

摘要本研究旨在评价大豆(Glycine max)品种在不同生育期对洪涝胁迫的耐受性。试验采用2x2x5因子设计，2个播种日期(10月和11月)，2个大豆品种(TECIRGA 6070RR和NA 5909 RG)， 5个生育期(SE-EM、EM-VC、VC-V2、V2-V4和V6-V8)，分别为2018/2019和2019/2020作物年。试验设计完全随机化，设4个重复。两种大豆品种对土壤淹水最敏感的生育期均为SE-EM期。苗期出苗后，无论品种、播期和作物年份，叶面积和地上部干物质的减少都以V2-V4期最大。从V4期开始，大豆表现出更高的耐涝能力。但出苗后，TECIRGA 6070RR品种对洪涝胁迫的耐受性高于NA 5909 RG。在10月播种往往会减少洪水胁迫对植株的影响。

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来源期刊

Pesquisa Agropecuaria Brasileira 农林科学-农业综合

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

9-18 weeks

期刊介绍： Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science. Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.