Genetic variability and analysis for grain quality traits and resistance to blast in traditional rice varieties of Karnataka
KrishiKosh
View Archive InfoField | Value | |
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
|
|