tailieunhanh - Genetic divergence studies in rice (Oryza sativa L.) hyrids for yield, yield component traits and quality parameters

Genetic divergence was assessed among 20 rice hybrids with 15 characters from different eco-geographical regions of India using Mahalanobis’ D2 analysis. The experimental materials were evaluated during kharif- 2017 at Agricultural College Farm, Bapatla, Andhra Pradesh, India. The 20 rice hybrids were grouped into 5 clusters. Out of five clusters, maximum number 9 of genotypes are in cluster I. Cluster II is second largest with 6 genotypes followed by cluster IV with 3 genotypes. Clusters III and V possess one genotype each. The pattern of distribution of genotypes from different eco-geographical regions into various clusters was at random indicating that geographical diversity and genetic diversity were not related. Based on the perse performance and cluster mean values of characters, it can be concluded that, the hybrid S-8001 which is present in the cluster II is found to be superior over other hybrids and checks in the present study by having high mean values for the economically important characters viz., number of total grains per panicle, number of productive tillers per plant and grain yield per plant. | Genetic divergence studies in rice (Oryza sativa L.) hyrids for yield, yield component traits and quality parameters

• Sinh học
• Rice hybrids
• Clusters and D2 analysis
• Quality parameters
• Yield component traits
• Genetic divergence studies
• Genetic divergence studies in rice
• Hybrid rice breeding manual
• Breeding rice hybrids with TGMS system
• Experimental rice hybrids
• Quality assurance procedures
• Hybridization method
• Plant balance seeds
• Identification restorers
• Molecular marker
• Microsatellite markers
• Restorer line
• Identification of rice hybrids
• Rice (Oryza sativa L )
• Grain yield
• Character association
• Path coefficient analysis
• Yield components of parents
• Hybrids in rice
• Net income
• Nitrogen use efficiency
• Rice hybrids fit well into inherently
• Fertile acidic soils
• Minimal nitrogen fertilizer inputs
• Receiving rain fed lowlands
• High yielding variety
• Nicobar islands
• Their exploitation in Andaman
• Nitrogen fertilization
• Pollen sterility
• Spikelet fertility
• Short grain aromatic rice hybrids
• Development of medium slender
• Identification of maintainers
• Stability analysis
• Two line rice hybrids
• Oryza sativa
• Environments utilizing AMMI model
• Genotypes evaluated across
• Andaman and Nicobar islands
• Rice hybrids and high yielding varieties
• Augmenting public distribution system demand
• Oryza sativa L
• Test crosses for identification
• Potential restorers
• Maintainers for development
• Development of rice hybrids
• Hybrid rice
• Varietal response
• Agro climatic conditions of U P
• Growth rate
• Phenology of rice
• Rice fallow sorghum
• Growth parameters
• Stover yield
• Harvest index
• Nitrogen levels
• kharif seasons
• N4 level
• New alluvial zone of West Bengal
• Informative microsatellite markers
• Standard heterosis
• Coefficient of marker polymorphism
• Yield efficiency
• Heterosis predicibility