Pati Prajna, Jena Mayabini, Bhattacharya Swarnali, Behera Santhosh Kumar, Pal Subhajit, Shivappa Raghu, Dhar Tapamay
Faculty of Agriculture, Siksha 'O' Anusandhan Deemed University, Bhubaneswar 751030, Odisha, India.
Department of Agricultural Entomology, Visva-Bharati University, Santiniketan 731236, West Bengal, India.
Insects. 2023 Jul 13;14(7):632. doi: 10.3390/insects14070632.
The brown planthopper [ (Stål.)] is one of the most destructive insect pests in all the rice-growing regions of the world. The pest is complicated to manage through the blanket application of chemical pesticides. The development of stable, durable -resistant rice varieties is the most economical and efficient strategy to manage the pest. Landraces of red rice genotypes possess numerous nutritional and stress-resistant properties, though an exclusive study on the same is yet to be carried out. In the present study, we evaluated 28 red rice genotypes, along with two resistance checks and one susceptibility check, for their resistance to . These promising lines revealed differential responses in the defense mechanism against the pest. The resistant accessions showed a greater accumulation of phenols, peroxidase, polyphenol oxidase, catalase, and superoxide dismutase under -stressed conditions. However, the concentration of soluble proteins was substantially decreased in all the test genotypes. The concentration of crude silica was at maximum in highly resistant genotypes. Six red rice genotypes, namely Mata Meher, Manipuri Black, Hermonona, Sonahanan, Bavdi, and Bacharya Khuta fall under the highly resistant category, and can be utilized as valuable sources of resistance in breeding programs.
褐飞虱[（斯塔尔）]是世界上所有水稻种植区中最具破坏性的害虫之一。通过全面施用化学农药来防治这种害虫很复杂。培育稳定、持久抗虫的水稻品种是防治该害虫最经济有效的策略。红米基因型的地方品种具有许多营养和抗逆特性，不过尚未对其进行专门研究。在本研究中，我们评估了28个红米基因型，以及两个抗性对照和一个感病对照对……的抗性。这些有前景的品系在针对该害虫的防御机制中表现出不同的反应。在胁迫条件下，抗性材料中酚类、过氧化物酶、多酚氧化酶、过氧化氢酶和超氧化物歧化酶的积累量更高。然而，所有测试基因型中可溶性蛋白质的浓度都大幅降低。高抗基因型中粗硅含量最高。六个红米基因型，即马塔·梅赫尔、曼尼普尔黑、赫莫诺纳、索纳哈南、巴夫迪和巴查里亚·库塔属于高抗类别，可作为育种计划中有价值的抗性来源。
