IDENTIFICATION OF GENOTYPES AND TAGGING OF AVAILABLE SSR MARKERS LINKED TO BCMV (BEAN COMMON MOSAIC VIRUS) RESISTANCE IN EARLY SEGREGATING GENERATION OF COWPEA [Vigna unguiculata (L.) Walp.] AND EVALUATION OF NATURE OF SEED TRANSMISSION
| dc.contributor.advisor | Rangaswamy, K. T. | |
| dc.contributor.author | AISHWARYA, P. | |
| dc.date.accessioned | 2018-04-20T04:38:45Z | |
| dc.date.available | 2018-04-20T04:38:45Z | |
| dc.date.issued | 2017-07-27 | |
| dc.description.abstract | BCMV has been found to infect large number of crop plants including cowpea and cause substantial yield loss. In this study the reaction of the segregating population of cowpea of selected crosses viz., IC39916 x IT38956-1 and IC39916 x KBC-2 were evaluated to identify resistant lines for further advancement. Further the nature of seed transmission of BCMV was investigated. Out of 200 plants of each cross of F2, 80 plants of cross IC39916 x IT38956-1 and 76 plants of cross IC39916 x KBC-2 showed resistant reaction at 60 DAS. The 2 test results indicated the involvement of complementary gene interaction in both the crosses for the disease reaction. Major yield parameters like number of pods and seed weight per plant of both the crosses showed the involvement of large number of genes with complementary epistasis while average length of the pods showed duplicate gene interaction. Higher estimates of PCV for number of pods and seed weight per plant showed high variability whereas average pod length showed low variability. Among the Simple Sequence Repeats (SSR) markers evaluated (M15, M135, M80 and Y96), the marker Y96 showed polymorphism for disease reaction for parents (IC39916, IT 38956-1 and KBC-2) and F2 population from both the crosses. The BCMV upon DAS-ELISA was found to be internally seed borne in nature. The virus was detected in embryo, cotyledon but not in the seed coat with varied concentrations in embryo and cotyledon, in both C-152 and KBC-2 varieties. | en_US |
| dc.identifier.other | Th-11691 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810044201 | |
| dc.language.iso | en | en_US |
| dc.pages | 110 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.subject | null | en_US |
| dc.theme | IDENTIFICATION OF GENOTYPES AND TAGGING OF AVAILABLE SSR MARKERS LINKED TO BCMV (BEAN COMMON MOSAIC VIRUS) | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | IDENTIFICATION OF GENOTYPES AND TAGGING OF AVAILABLE SSR MARKERS LINKED TO BCMV (BEAN COMMON MOSAIC VIRUS) RESISTANCE IN EARLY SEGREGATING GENERATION OF COWPEA [Vigna unguiculata (L.) Walp.] AND EVALUATION OF NATURE OF SEED TRANSMISSION | en_US |
| dc.type | Thesis | en_US |