Genetics and stability of cotton seed oil, seed cotton yield, compoenent characters and expression pattern of Cry1 Ac proten, fatty acid profile in Bt and Non-Bt cotton (G.hirsutum L.) hybrids
| dc.contributor.advisor | B.M.Khadi | |
| dc.contributor.author | Nagappa Harijan | |
| dc.date.accessioned | 2016-07-23T10:56:49Z | |
| dc.date.available | 2016-07-23T10:56:49Z | |
| dc.date.issued | 2009 | |
| dc.description.abstract | Cotton has a proud place among the crops from earliest times. Apart from seed cotton the cotton seed oil also has very good quality and vitamin E. The unsaturated fatty acid composition of Bt (59.71%) and non-Bt hybrids (59.15%) was similar. And only four Bt hybrids showed numerically superiority to their respective non- Bt hybrids. It can thus be safely concluded that presence of Cry1Ac gene did not affect the oil content or its profile in the Bt hybrids. Six Bt hybrids had significantly higher oleic acid than their respective non-Bt version. Four germplasm lines nearly high oil content of more than 25% were identified. Their fatty acid composition was on par with the two checks indicating that these lines could be used in breeding programmes to increase oil content keeping the present level of fatty acid composition intact. Genetics of oil content, plant height, lint index, ginning out turn and lint weight showed that these traits were controlled by dominant genes and dominance x dominance interactions. The traits monopodial branches, seed cotton yield, and number of bolls per plant were controlled by dominance gene effects and additive × additive gene interactions. For seed index, additive gene interaction was prominent. Among 24 Bt and their counter part non-Bt hybrids evaluated JKCH-2245 non-Bt, K-5038 Bt, KDCHH-441 Bt, NCEN-2R non-Bt, Dhruva Bt and JKCH-99 Bt hybrids were identified as stable yielders for south and central India. Studies on the expression of Cry1Ac protein in different tissues at various stages showed the decreasing Cry1Ac protein expression and crop age advanced. However, JKCH- 1947, Dhruva, NCEN-3R and SBCH-311 in leaf tissue and hybrids SBCH-311, JK-Durga and JKCH-1945 in rind had lesser decreasing rate of Cry1Ac protein. Six and three Bt hybrids exhibited higher Cry1Ac protein in the flower and in young bolls respectively at later stages. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/69506 | |
| dc.publisher | UAS Dharwad | en_US |
| dc.sub | Genetics and Plant Breeding | |
| dc.these.type | Ph.D | |
| dc.title | Genetics and stability of cotton seed oil, seed cotton yield, compoenent characters and expression pattern of Cry1 Ac proten, fatty acid profile in Bt and Non-Bt cotton (G.hirsutum L.) hybrids | en_US |
| dc.type | Thesis | en_US |