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Genetic variability and analysis for grain quality traits and resistance to blast in traditional rice varieties of Karnataka

KrishiKosh

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Title Genetic variability and analysis for grain quality traits and resistance to blast in traditional rice varieties of Karnataka
 
Creator B, Nandini
 
Contributor E, Gangappa
 
Subject grain, rice, yields, genetics, developmental stages, biological phenomena, planting, sets, genes, proteins
 
Description An investigation was undertaken during 2011-2013 at ZARS, V.C
Farm, Mandya, ARS, Ponnampet and UAS, GKVK, Bangalore to study the
genetic variability among TRVs, to develop, validate and identify the best
core set, to analyze the grain nutrient content and cooking quality traits,
to screen TRVs under field condition against leaf blast resistance and
molecular validation of selected TRVs with linked SSR markers for leaf
blast resistance and grain protein content.
Analysis of variance and standardized difference indicated the
significant difference with wide variation among TRVs for all the 14 traits
studied during kharif and summer. PCV estimates were higher than the
GCV estimates for all the traits in both the seasons. High heritability
coupled with high GAM was reported for days to 50% flowering, grain
length, L/B ratio and straw yield plant-1 during both the seasons.
Organization of variability based on K means clustering revealed
significant difference among the cluster means and variance during both
the seasons and for pooled analysis. Out of five core sets developed and
validated using different statistical tool revealed that 15% heuristic
approach based core set represented the base collection diversity than
other core set formed. Analysis of grain nutrient content revealed that
grain protein content showed wide variation and TRVs such as K.S and
Nagabatta possessed significantly higher grain protein and grain yield
plant-1. The selected 49 TRVs were analyzed for physical,
physicochemical and cooking quality parameters results indicated that
significant difference for water uptake ratio. Screening of TRVs in the
field environment revealed that 11 out of 324 TRVs were resistant both at
Mandya and Ponnampet. Molecular validation for blast and grain protein
content revealed that, Chingari batta possessed Pi9, Pish, Pib, Pi20(t) and
Pik blast resistant genes and K.S, Kadulile, Musali and Nagabatta
possessed high grain protein content.
 
Date 2016-05-21T09:14:59Z
2016-05-21T09:14:59Z
2013-09-17
 
Type Thesis
 
Identifier Th-10643
http://krishikosh.egranth.ac.in/handle/1/66186
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences, Bengaluru