tailieunhanh - Studies on combining ability and panicle mite resistance in hybrid rice (Oryza sativa L.)

Studies were conducted on the combining ability and relative resistance of rice hybrids against panicle mite (Steneotarsonemus spinki) during Kharif, 2017. Six cytoplasmic male sterile lines were crossed to seven testers in Line X Tester mating design to produce 42 hybrids. The parents and hybrids along with two checks were evaluated. The analysis of variance for combining ability showed that mean sum of square due to lines, testers and the interaction between lines and testers was significant for most of the characters under study. The result revealed that peak incidence of mite occurred at the ripening stage but significantly higher number of mite population and damage symptoms in all plants were observed at the panicle emerging to ripening stage. Out of 42 rice hybrids and 13 parental lines evaluated, based on GCA and SCA effects two parental lines viz., JMS 20B and JR 80 and fifteen hybrids were of good yield potential and resistant against panicle mite with no damage symptoms. The results on categorization of resistance revealed that, five parental lines and eleven hybrids contribute for moderate resistance. Six parents and sixteen hybrids were found susceptible against Steneotarsonemus spinki. | Studies on combining ability and panicle mite resistance in hybrid rice (Oryza sativa L.)

• Nông nghiệp
• Combining ability
• Panicle mite
• Grain yield
• Rice Oryza sativa L
• Panicle mite resistance in hybrid rice
• General combining ability
• Specific combining ability
• Half diallel
• Quality parameters
• Combining ability studies in okra
• Dolichos bean
• Gene action
• Per se performance
• Dolichos bean (Lablab purpureus L
• Parental general combining ability
• Flue Cured Virginia tobacco
• Cured leaf yield
• Combining ability studies in blackgram
• Blackgram (Vigna mungo (L
• ) Hepper
• Combining ability studies
• Basis of SCA effects
• Combining ability analysis
• Combining ability analysis for earliness
• Yield and quality components
• Quality components in tomato
• Solanum lycopersicum L
• Bitter gourd (Momordica charantia L )
• Combining ability studies for yield
• Plant characters in bitter gourd
• Groundnut (Arachis hypogaea L )
• Combining ability for yield and yield components
• General combinig ability
• Specific combining abiliy
• Ridge gourd [Luffa acutangula]
• Combining ability in ridge gourd
• Standard heterosis
• Heterosis studies in maize
• Line x Tester analysis
• Specific combing ability
• Bacterial wilt resistance in tomato
• F1 seeds
• Yield components
• Lycopersicum sp
• Single cross hybrids of maize
• Maize (Zea mays L
• Specific combining ability studies
• Non additive gene action controlling
• Line and testers
• Sunflower (Helianthus annus L )
• Determining combining ability in sunflower
• Determining combining ability
• Flowering and harvest index
• Abelmoschus esculentus L Moench
• Gca effects
• Sca effects
• SCA effect
• Fertility per cent
• Rice (Oryza sativa L
• Yield and its contributing traits
• Combining ability for yield
• Indian mustard
• Heterosis and combining ability analysis
• Seed yield
• Seed yield and its attributes
• Barley (Hordeum vulgare L
• Diallel revealed highly significant
• Identify promising crosses
• Crop improvement
• Studies on magnitude
• Genetic variability
• Estimates of combining ability
• Sponge gourd
• Sponge gourd [Luffa cylindrica (Roem ) L ]
• Line X tester
• Cowpea [Vigna unguiculata (L
• ) Walp]
• Combining ability in cowpea
• GCA and mungbean
• Estimation of combining ability
• Combining ability effect
• Effect in mungbean
• Vigna radiata
• General and specific combining ability
• Bread wheat
• Bread wheat (Triticum aestivum L em Thell)
• Specific combining ability analysis
• Late sown condition
• Aphid tolerance
• Carthamus tinctorious L
• High yielding varieties
• Upland cotton
• Upland cotton (G hirsutum)
• General combining ability in upland cotton
• Rabi sorghum
• Studies on combining ability
• Yield and its component traits