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Against brown planthopper in rice
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The brown planthopper (BPH, Nilaparvata lugens Stål) is a kind of phloem-feeding pest that adversely affects rice yield. Recently, the BPH-resistance gene, BPH6, was cloned and applied in rice breeding to effectively control BPH. However, the molecular mechanisms underlying BPH6 are poorly understood.
17p
vijeeni2711
24-07-2021
5
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The biochemical constituents of the rice plants contributing to resistance has been studied from time immemorial. In the present study the biochemical constituents in DSR and TPR ecosystem were compared so as understand the role of biochemical defense.
8p
gaocaolon9
22-12-2020
6
1
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A field trial was conducted to quantify the role of Integrated Pest management (IPM) against brown planthopper Nilaparvata lugens Stal. in the upland rainfed rice growing areas of West Bengal, India during 2002-03 and it was reevaluated during 2017-18.
7p
caygaocaolon7
18-09-2020
6
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Evaluation of resistance in some rice genotypes against brown Planthopper, Nilaparvata lugens (Stal)
Studies were carried out under glass house conditions to study the evaluation of resistance in some rice genotypes against Brown plant hopper, Nilaparvata lugens. Among the rice genotypes tested against N. lugens (Stal), Ptb 33 (the resistant check) lowest mean damage rating (1.00), while genotypes, PTB 41 exhibited a damage score ranging from (1.00-1.67), when compared to T(N)1 (9.00).The genotypes viz., Co 43, ADT 36, Columbia, Swarna, SR 26B were moderately resistant with damage rating of (3.00-3.67) and the remaining genotypes were moderately susceptible or highly susceptible.
5p
angicungduoc6
20-07-2020
26
1
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The development of biotypes and existence of variability in Brown planthopper population always demands for the identification of new sources of resistance from time to time. However, the presence of desirable quality and yield traits in the genotypes along with source of resistance to BPH will be an added advantage. Screening was carried out with 39such promising rice genotypes and three checks following standard seed box technique. The test revealed 17 genotypes to be moderately resistant with damage score ranging between 3.6 -5.0.
6p
gaocaolon5
14-06-2020
12
1
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Studies were undertaken to evaluate the rice genotypes of Sikkim and Tripura for their resistance against brown planthopper (BPH) under glasshouse conditions. Among 74 rice genotypes phenotyped, a genotype (AC-39843) was considered as resistant and two other genotype (AC-39842 and AC-39877) of Tripura were categorized as moderately resistant to BPH. To understand their mechanism of resistance, resistant genotypes were evaluated for different parameter of antixenosis and antibiosis.
16p
nguathienthan3
27-02-2020
19
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Developing cultivars resistant against different biotypes of brown planthopper (BPH) through marker-assisted selection (MAS) is an effective management strategy to control this pest. In this study, 28 polymorphic simple sequence repeat (SSR) markers were analyzed in 108 F3 progenies derived from the cross of Rathu Heenati and MR276 rice cultivars to investigate the association with BPH resistance against biotypes 2 and 3.
8p
vikimsa
22-02-2019
17
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