Plant resistance to phytophagy is one of the pillars of integrated pest management. Five wild rice accessions viz. IRGC99577, IRGC104646, IRGC105270, IRGC105275, CR100204 along with susceptible (TN1) and resistant (Ptb33) controls were studied for levels of antibiosis resistance and their defense response to brown planthopper (BPH), Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) feeding. Parameters involved in antibiosis resistance viz., honeydew excretion, nymph emergence, nymph survival and development duration and the potential role of antioxidant enzymes viz. superoxide dismutase (EC 1.15.1.1), peroxidase (EC 1.11.1.7), catalase (EC 1.11.1.6), ascorbate peroxidase (EC 1.11.1.11) and H2O2 content in imparting antibiosis against BPH was studied during wet (Kharif) crop seasons of 2017 and 2018. Increased level of antioxidant enzymes were recorded after BPH infestation both in leaf blade and sheath in IRGC99577. Higher induced level of peroxidase was observed in Ptb33 and IRGC99577. Maximum percent increase in H2O2 content after insect infestation was observed in IRGC104646 and CR100204 accessions. The correlation between nymph emergence and superoxide dismutase, peroxidase and H2O2 was significantly negative (r = −0.99, −0.89, −0.93, respectively), while, it was significantly positive with catalase and ascorbate peroxidase (r = 0.99 and 0.98, respectively). Enhanced activities of enzymes may impart resistance in selected accessions against BPH as indicated by correlation and regression analysis. IRGC99577 has come out a potential source of resistance against BPH, which could be used in breeding programmes to develop BPH resistant varieties.

中文翻译：

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Nilaparvata lugens (Stål) 饲养诱导的野生稻种质中的抗生素

植物对植食的抗性是害虫综合治理的支柱之一。五个野生稻种质即。研究了 IRGC99577、IRGC104646、IRGC105270、IRGC105275、CR100204 以及敏感 (TN1) 和抗性 (Ptb33) 对照的抗生素抗性水平及其对褐飞虱 (BPH)、Nilaparvata 褐飞虱) 的防御反应： . 与抗药性有关的参数，即蜜露排泄，若虫出现，若虫存活和发育持续时间以及抗氧化酶的潜在作用，即。在潮湿 (Kharif) 作物季节研究了超氧化物歧化酶 (EC 1.15.1.1)、过氧化物酶 (EC 1.11.1.7)、过氧化氢酶 (EC 1.11.1.6)、抗坏血酸过氧化物酶 (EC 1.11.1.11) 和 H2O2 含量对 BPH 的抗菌作用2017 年和 2018 年。在 IRGC99577 中，叶片和鞘中 BPH 侵染后抗氧化酶水平升高。在 Ptb33 和 IRGC99577 中观察到更高的诱导水平的过氧化物酶。在 IRGC104646 和 CR100204 种质中观察到昆虫侵染后 H2O2 含量的最大百分比增加。若虫出现与超氧化物歧化酶、过氧化物酶和 H2O2 呈显着负相关（分别为 r = -0.99、-0.89、-0.93），而与过氧化氢酶和抗坏血酸过氧化物酶呈显着正相关（分别为 r = 0.99 和 0.98） . 如相关性和回归分析所示，酶的增强活性可能会赋予选定种质对 BPH 的抗性。IRGC99577 已经出现了对 BPH 的潜在耐药源，