Spore concentrations of<i>Blumeria graminis</i>f. sp.<i>tritici</i>in relation to weather factors and disease development in Gansu, China

Gu, Yunqing; Chu, Bingyao; Wang, Cuicui; Li, Leifu; Zhou, Yilin; Luo, Yunbo; Ma, Zhanhong

doi:10.1080/07060661.2019.1630011

Cited by 6 publications

(2 citation statements)

References 30 publications

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“…In the present study, the occurrence of powdery mildew in purple ipe plants may have been favored by in vitro culture conditions such as controlled temperature, light intensity, and the culture medium used. According to Rana et al (2018) and Gu et al (2020) these variables influence spore production. For biotrophic parasites like Oidium sp.…”

Section: Resultsmentioning

confidence: 99%

Seed pretreatment for control of powdery mildew infection on purple ipe micropropagation

et al. 2022

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Purple ipe (Handroanthus impetiginosus) is an important tree species in Cerrado biome conservation and very popular at the landscaping and urban afforestation. However, its micropropagation is affected by pathogens, such as Oidium sp. The aim this study was evaluate the efficiency of seed treatments in the control of powdery mildew of purple ipe obtained by micropropagation. The symptoms were observed during in vitro germination, a Koch’s postulates were performed for confirm the pathogenicity, colonization of the pathogen on the leaves was analyzed in optical and scanning microscopes and a scale to evaluate severity was proposed. Two experiments were realized to powdery mildew control using a completely randomized design, with 30 replicates. First experiment: Seeds were treated with ethanol (Et), chlorothalonil + thiophanate-methyl (C+TM), and sodium hypochlorite (NaOCl); second experiment: Seeds were treated with Et, NaOCl, C+TM, and neem oil. Disease severity and area under the disease progress curve (AUDPC) were assessed in both experiments. Disease symptoms and typical pathogen structures were observed, and the pathogenicity was confirmed. The disease severity was reduced by 30.78% in 1.5% neem oil for 10 min when compared with C+TM for 15 min. We conclude that neem oil can be a strategy sustainable for the control of powdery mildew in purple ipe in tissue culture.

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Section: Resultsmentioning

confidence: 99%

Seed pretreatment for control of powdery mildew infection on purple ipe micropropagation

et al. 2022

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“…The number of diseased leaves and severity were recorded, and the severity evaluation criteria were divided according to the size of summer spore heap in leaf area, namely 0, 1%, 5%, 10%, 20%, 40%, 60%, 80%, and 100%. Then the incidence and disease index were calculated using the formula from Gu [32].…”

Section: Rust Disease Surveymentioning

confidence: 99%

Cultivar Mixture Enhances Crop Yield by Decreasing Aphids

et al. 2022

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The reduction in biodiversity owing to agricultural intensification has brought negative effects on sustainable crop production in the agro-environment. Plant diversity can help regulate insect pests; however, research that demonstrates that genotypic diversity of multiple varieties with prominent agroecological practices to suppress insect pests and benefit crop yield at agricultural landscapes is limited. To examine the effects of diversity of wheat varieties on aphids and crop productivity, we performed field experiments by designing plots of single (resistant/susceptible) and cultivar mixtures in 2018–2020. The effects of population abundance of cereal aphids (Sitobion miscanthi and Rhopalosiphum padi) and crop yield on resistant and susceptible wheat varieties and mixture of wheat cultivars were determined to reveal the most dominant mixed broadcasting mode in Kaifeng of China. The results showed that cultivar mixture significantly decreased aphid abundance compared with the single varieties (resistant/susceptible). Cultivar mixture had a higher yield compared with the single varieties (resistant/susceptible). Additionally, cultivar mixture had significantly higher thousand-grain weights than susceptible and resistant wheat varieties in 2019 and 2020. Cultivar mixture enhanced wheat yield by decreasing cereal aphids, indicating a bottom-up or top-down effect from genetic diversity to pest abundance. Our results indicated that appropriate cultivar mixtures could manage insect pests to some extent and stabilize crop yield.

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Responses of soil microbial community structure, potential ecological functions, and soil physicochemical properties to different cultivation patterns in cucumber

et al. 2023

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Spore concentrations ofBlumeria graminisf. sp.triticiin relation to weather factors and disease development in Gansu, China

Cited by 6 publications

References 30 publications

Seed pretreatment for control of powdery mildew infection on purple ipe micropropagation

Seed pretreatment for control of powdery mildew infection on purple ipe micropropagation

Cultivar Mixture Enhances Crop Yield by Decreasing Aphids

Responses of soil microbial community structure, potential ecological functions, and soil physicochemical properties to different cultivation patterns in cucumber

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