TAILIEUCHUNG - Evaluation of rice genotypes of sikkim and tripura for resistance to Brown Planthopper, Nilaparvata lugens (Stal)

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. The antixenosis and antibiosis studies in terms of nymphal setting preference, per cent unhatchability of eggs, nymphal survival and development, honeydew excretion, probing mark test, plant dry weight loss and defence enzymes (Peroxidase, polyphenol oxidaseand catalase) indicated that these genotypes showed confirmation of resistance to BPH compared to susceptible check TN 1. Among resistant genotypes, AC-39843 recorded lowest sugar content followed by AC39842 and AC-39877 compared to TN1. Total phenol content in AC-39843 was highest followed by AC-39877 and AC-39842. Resistant genotypes found in the study could be used as new resistant donors and utilized in resistance breeding programme against brown planthopper in rice. | Evaluation of rice genotypes of sikkim and tripura for resistance to Brown Planthopper, Nilaparvata lugens (Stal)

• Sinh học
• Evaluation of rice genotypes
• Sikkim and tripura
• Resistance to Brown Planthopper
• Against brown planthopper in rice
• Nymphal survival and development
• Genetic variability
• Genetic advance for yield
• Yield components in rice genotypes
• Rice genotypes
• Genetic variability in rice genotypes
• Brown planthopper
• Nilaparvata lugens
• Nilaparvata lugens (Stal)
• Rice genotypes against brown Planthopper
• Evaluation of resistance in rice genotypes
• Genetic advance
• Rice (Oryza sativa L )
• Normal soil conditions
• Rice genotypes for genetic variability
• Rainfed rice
• Rainfed rice genotypes
• Genetic diversity
• Genetic diversity in rainfed rice genotypes
• False smut
• Ustilaginoidea virens
• Middle IGP of bihar
• Resistance against false smut
• Tissue culture embryo
• Mature embryos
• Evaluation and validation of rice
• Rice (Oryza sativa L
• Genotypes for tissue culture response
• Brown plant hopper
• Hopper (Nilaparvata lugens Stal ) resistance
• In vitro evaluation of rice genotypes
• In vitro evaluation
• Upland rice genotypes
• Rice genotypes for content
• Uptake of micronutrients
• Rainfed upland situation in bastar
• Micronutrients in rainfed upland situation
• Water use efficiency
• Different rice establishment methods
• Different growing environment
• Rice fallow maize
• Mean performance
• Rice fallow situation
• Maize genotypes
• Performance under rice fallow condition
• Rice blast
• Heritability and correlation
• Advanced varietal rice genotypes
• Leaf blast reaction
• Coloured rice
• Grain yield
• Nutritional quality
• White rice genotypes for yield
• Cluster analysis
• Genetic variability in rice
• Mid hill region of Nepal
• Varietal evaluation
• Bacterial blight
• Resistance genes
• Disease scoring
• Against bacterial blight caused
• Resistance of rice genotypes
• Abiotic stress
• Controlled situation
• Coleoptile growth
• Radical regrowth
• Low temperature
• Global grain
• Seed shape
• Seed image analyser
• Seed morphometric characters