Identification of sterility mosaic disease resistant recombinant inbred lines in high yielding background and localizing genomic regions controlling its resistance in pigeonpea [Cajanus cajan (L.) Millsp.]
| dc.contributor.advisor | RAMESH, S | |
| dc.contributor.author | NEETHA, JAYARAM | |
| dc.date.accessioned | 2016-12-06T12:47:34Z | |
| dc.date.available | 2016-12-06T12:47:34Z | |
| dc.date.issued | 30-07-12 | |
| dc.description.abstract | Sterility mosaic disease (SMD) of pigeonpea [Cajanus cajan (L.) Millsp.] caused by pigeonpea sterility mosaic virus (PPSMV) is one of the most important diseases of pigeonpea which can cause yield loss upto 95 percent under favourable conditions. Development and deployment of cultivars resistant to SMD is considered as most economical and eco-friendly option to mitigate the losses due to SMD. Identification of easily assayable, crop-stage non-specific and environment-neutral surrogates such as DNA markers linked to genomic regions controlling SMD is a step towards this. In the present study, 120 RILs derived from SMD susceptible (TTB 7) and resistant parents (ICP 7035), their parents (TTB 7 and ICP 7035) and two checks (BRG 1 and BRG 2) were screened for response to SMD following Leaf Stapling technique for use in locating genomic regions controlling SMD resistance at All India Co-ordinated Research Project (AICRP) on pigeonpea, University of Agricultural Sciences (UAS), Gandhi Krishi Vignana Kendra (GKVK), Bengaluru during 2011. The RILs were phenotyped for economic traits at the experimental plots of the Department of Genetics and Plant Breeding, UAS, GKVK, Bengaluru during 2011. The RILs 14, 92 and 107 were immune to the disease (0.00% SMD incidence) and transgressed their resistant parent, ICP 7035 (06.67% SMD incidence). The RILs 03 (10.00% SMD incidence) and 32 (06.67% SMD incidence) were found resistant to SMD infection with pod and seed yield potential better than the better parent (TTB 7).The RIL No. 51, 12, 40, 04, 28, 59, 03, 62 and 63 transgressed their parents and BRG 1 and BRG 2 for pod yield potential. One (ICPMIE04) of the eleven SSR markers polymorphic to parents of RILs could differentiate SMD resistant and susceptible bulks and their constituent individuals of RILs. However, single marker analysis indicated lack of evidence for its association with genomic regions conferring SMD resistance. | en_US |
| dc.identifier.other | Th-10241 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/89271 | |
| dc.language.iso | en | en_US |
| dc.publisher | University of Agricultural Sciences GKVK, Bangalore | en_US |
| dc.sub | Genetics and Plant Breeding | en_US |
| dc.these.type | M.Sc | |
| dc.title | Identification of sterility mosaic disease resistant recombinant inbred lines in high yielding background and localizing genomic regions controlling its resistance in pigeonpea [Cajanus cajan (L.) Millsp.] | en_US |
| dc.type | Thesis | en_US |