为干旱灌溉地区确定具有抗白霉菌能力的普通豆类的战略:补充证据

IF 1.1 4区 农林科学 Q3 PLANT SCIENCES
Pablo H. Teixeira, Renan C. Lima, Trazilbo J. Paula Jr., José Eustáquio S. Carneiro, Heder Braun, Júlia E. A. Silva, Rogério F. Vieira
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引用次数: 0

摘要

在之前的一项研究中,在田间筛选出了蚕豆(Phaseolus vulgaris L.)的基因型,以确定其对由硬核菌(Sclerotinia sclerotiorum)引起的白霉(WM)的反应。然后在田间和温室(稻草试验)条件下对这些基因型以及抗性对照 A195 进行了评估。结果表明,田间试验有效地确定了干旱灌溉条件下抗性 WM 的高产基因型。在此,我们采用新的数据和方法,在 2015 年至 2017 年期间进行了六次喷灌试验,其中有五个基因型组(G),从而对这项研究的结果提出了质疑。其中三组由之前研究过的基因型组成:G1 组有七个部分抗性基因型;G4 组有两个中间抗性基因型;G5 组有三个易感基因型。G2 包括在本次研究中选育出的四个具有部分抗性的品系。抗性对照组 G3 包括基因型 A195、G122、Cornell605 和 Ouro Branco。没有 WM(一项试验),或压力为低/中(两项试验)或中/高(三项试验)。平均种子产量从 2207 公斤/公顷(G3)到 3178 公斤/公顷(G1)不等。在发病率和严重性指数方面,G1、G2 与 G3 的对比不显著,这表明在田间选育的抗性基因型与抗性对照基因型一样具有抗性。此外,与对照组相比,抗性选育组的产量提高了 43%,产生的硬菌重量减少了 33%。我们的研究结果进一步证明,利用最初为抗 WM 以外的目的培育的豆类,特别是针对干旱灌溉地区,选择抗 WM 基因型是有效的。此外,我们的研究结果表明,使用为部分抗性而选育的基因型可降低土壤中的病菌数量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Strategy to identify common beans with resistance to white mould for dry-irrigated areas: Additional evidence

In a previous study, common bean (Phaseolus vulgaris L.) genotypes were selected in the field for reactions to white mould (WM), caused by Sclerotinia sclerotiorum. These genotypes, along with the resistant control A195, were then evaluated in both field and greenhouse (straw test) conditions. The results showed that field trials effectively identified high-yielding WM-resistant genotypes for dry-irrigated conditions. Here we challenge the results of this study with new data and methodology by conducting six sprinkler-irrigated trials from 2015 to 2017 with five genotype groups (G). Three groups comprised genotypes previously studied: G1, seven partially resistant; G4, two intermediately resistant; and G5, three susceptible. G2 consisted of four lines selected for partial resistance in the current study. The resistant control group, G3, comprised the genotypes A195, G122, Cornell605, and Ouro Branco. WM was absent (one trial), or pressure was either low/moderate (two trials) or moderate/high (three trials). The average seed yield ranged from 2207 (G3) to 3178 kg/ha (G1). The contrast G1, G2 versus G3 was nonsignificant for incidence and severity index, indicating that genotypes selected for resistance in the field were as resistant as the resistant control genotypes. Additionally, the groups selected for resistance yielded 43% more and produced 33% less sclerotia weight compared with the control group. Our results reinforce the effectiveness of selecting WM-resistant genotypes using beans originally bred for purposes other than WM-resistance, specifically targeting dry-irrigated areas. Furthermore, our results suggest that the use of genotypes selected for partial resistance reduces inoculum levels in the soil.

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来源期刊
Journal of Phytopathology
Journal of Phytopathology 生物-植物科学
CiteScore
2.90
自引率
0.00%
发文量
88
审稿时长
4-8 weeks
期刊介绍: Journal of Phytopathology publishes original and review articles on all scientific aspects of applied phytopathology in agricultural and horticultural crops. Preference is given to contributions improving our understanding of the biotic and abiotic determinants of plant diseases, including epidemics and damage potential, as a basis for innovative disease management, modelling and forecasting. This includes practical aspects and the development of methods for disease diagnosis as well as infection bioassays. Studies at the population, organism, physiological, biochemical and molecular genetic level are welcome. The journal scope comprises the pathology and epidemiology of plant diseases caused by microbial pathogens, viruses and nematodes. Accepted papers should advance our conceptual knowledge of plant diseases, rather than presenting descriptive or screening data unrelated to phytopathological mechanisms or functions. Results from unrepeated experimental conditions or data with no or inappropriate statistical processing will not be considered. Authors are encouraged to look at past issues to ensure adherence to the standards of the journal.
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