抗杂交番茄晚疫病产量损失评估及风险规避

IF 0.2 Q4 HORTICULTURE
Sandeep Kumar G M, S. S, Laxman R H, Harshita K N
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引用次数: 0

摘要

晚疫病(Phytophthora infestans)是世界性的番茄毁灭性病害之一。2019年和2020年在印度卡纳塔克邦班加罗尔的Hesaraghatta进行了田间试验,以估计晚疫病造成的产量损失,并评估抗性基因型在晚疫病生长期间的保护程度。产量损失的计算方法是,在三个F1杂交品种NS501、Arka Rakshak(均为易感基因型)和Arka Abhed(一种抗性基因型)上,用杀菌剂处理和不使用杀菌剂处理的田块产量差异的百分比。两年多来,NS501、Arka Rakshak和Arka Abhed因晚疫病造成的平均产量损失分别为79.47%、75.53%和12.84%。Arka Abhed的平均AUDPC值较低(2019年为147.22,2020年为469.17),产量损失较低,为抵御晚疫病提供了负担得起的保护。我们的研究结果表明,晚疫病是一种重要的经济危害,在班加罗尔地区的番茄产量损失保险计划中应予考虑。栽培Arka Abhed杂交种可以避免与晚疫病相关的产量损失风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Tomato late blight yield loss assessment and risk aversion with resistant hybrid
Late blight (Phytophthora infestans) is one of the devastating diseases of tomato worldwide. Field trial was carried out in Kharif 2019 and 2020 in Hesaraghatta, Bengaluru, Karnataka, India, to estimate yield loss due to late blight and to assess extent of protection in resistant genotype during late blight epiphytotics. Yield loss was calculated as per cent difference in yield between fungicides treated and unprotected plots in three F1 hybrids NS501, Arka Rakshak, both susceptible genotypes and Arka Abhed, a resistant genotype. Over two years, average yield loss due to late blight was 79.47 per cent in NS501, 75.53 per cent in Arka Rakshak and 12.84 per cent in Arka Abhed. With lower mean AUDPC values (147.22 in 2019 and 469.17 in 2020) and with low yield loss, Arka Abhed provided affordable protection against late blight. Our findings indicate late blight as an economically important peril to be considered for tomato yield loss coverage under insurance scheme in Bengaluru region. Arka Abhed hybrid can be cultivated to avert yield loss risk associated with late blight epiphytotics.
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来源期刊
Journal of Horticultural Sciences
Journal of Horticultural Sciences Agricultural and Biological Sciences-Plant Science
CiteScore
0.30
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0.00%
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审稿时长
6 weeks
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