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首页> 外文期刊>The Kasetsart Journal >Influence of Biotic and Chemical Plant Inducers on Resistance of Chilli to Anthracnose
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Influence of Biotic and Chemical Plant Inducers on Resistance of Chilli to Anthracnose

机译:生化植物诱导物对辣椒抗炭疽病的影响

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The potential of biotic and chemical plant inducers to trigger the resistant in plant against disease was investigated. A biotic inducer as Trichoderma harianum and chemical inducers as salicylic acid and Bion~® were tested for their induced resistance ability to protect anthracnose disease on two tested chilli cvs. Mae Ping and Man Dum in both seedling and mature stages. The necrotic symptom development on seedling of both tested chilli varieties after treated with Bion~® 0.05 mg a.i./ml was significantly lower than the others. The potential of anthracnose management on chilli cv. Man Dum was also treated by T. harianum at 10~8 spore/ml and salicylic acid at 1 mM. Treatments with any plant inducer did not lead to an increase activity of polyphenol oxidase in chilli cotyledon 1,3 and 5 day after challenge inoculation. In field experiment, the result showed that the foliar sprays with any of plant inducer reduced the infection percentage of anthracnose on chilli. Bion~® also showed the best percentage of disease reduction compared to the untreated treatment at 76.3% and 75.9% on both chilli varieties, whereas in treatment of 10~8 spore/ml T. harianum and 2 mM salicylic acid were reduced 24.2, 57.4% and 19.8, 36.6% respectively. However, fruit yield of Bion~® treatment was very low and significantly different to control. The phytotoxicity occurred at high concentration. T. harianum and salicylic acid treatment showed the fruit yield to be significantly increased in comparison with the control on chilli cv. Man Dum, but not on cv. Mae Ping. All plant inducers did not affect to fruit fly infestation on both varieties under field conditions.
机译:研究了生物和化学植物诱导物触发植物抗病性的潜力。测试了两种生物辣椒的生物诱导剂哈里木霉菌和化学诱导剂水杨酸和Bion®的诱导抗性,以保护炭疽病。梅坪和曼杜姆处于苗期和成熟期。用0.05 mg a.i./ml的Bion〜®处理后,两个测试辣椒品种的幼苗上的坏死症状明显低于其他品种。辣椒简历中炭疽病管理的潜力。还用10.8孢子/ ml的哈曼木霉和1 mM的水杨酸处理了Man Dum。攻击接种后第1、3和5天,用任何植物诱导剂处理都不会导致辣椒子叶中多酚氧化酶的活性增加。在田间试验中,结果表明,任何植物诱导剂的叶面喷雾剂均能降低炭疽病对辣椒的感染率。在两个辣椒品种上,与未处理的相比,Bion〜®的疾病减少率也最佳,分别为76.3%和75.9%,而在处理10〜8孢子/ ml的T. harianum和2 mM水杨酸时,减少率分别为24.2、57.4 %和19.8,36.6%。但是,Bion〜®处理的果实产量非常低,与对照相比有显着差异。高浓度时会产生植物毒性。 T. harianum和水杨酸处理显示,与辣椒cv的对照相比,果实的产量显着提高。 Man Dum,但没有简历。湄平。在田间条件下,所有植物诱导剂均未对这两个品种的果蝇侵染产生影响。

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