Genetic Enhancement of Oleic Acid Content in GroundNut(Arachis Hypogaea L.)
| dc.contributor.advisor | H. L. Nadaf | |
| dc.contributor.author | Gangadhara K | |
| dc.date.accessioned | 2016-07-26T10:27:54Z | |
| dc.date.available | 2016-07-26T10:27:54Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | Investigations were carried out to study the inheritance pattern of high oleic acid and genetic variability for oil quality and agronomic traits in direct and backcross populations of groundnut from 2010 to 2013 at MARS, UAS, Dharwad. Inheritance studies revealed a simple recessive inheritance pattern of high oleic acid content. In F2 generation, individuals segregated in 3:1 (low and medium) ratio in crosses of low × medium and medium × high crosses and 15:1 (low and high) ratio in low × high crosses indicating that high oleic acid content phenotype was governed by two recessive genes in groundnut. This simple duplicatory recessive (ol1ol1ol2ol2) inheritance pattern of high oleic acid content in new sources of high oleic mutants (GM 4-3, GM6-1) and germplasm line ICG 2381 would help to plan for genetic improvement of nutritional and storage stability of groundnut oil. Evaluation of backcross populations for oil quality and agronomic traits indicated the superiority of backcross method for transfer of high oleic acid trait along with other economic traits. In general, higher frequencies of desirable segregants were identified in second backcross derived populations (BC2) compared to direct F2 and first backcross (BC1) populations. The backcross population (GPBD 4 × GM 4-3)-38 × GPBD 4 was superior with higher frequency of desirable recombinants compared to another (GPBD 4 × GM 4-3)-34 × GPBD 4 backcross population. Higher heritability and genetic advance were recorded for oleic acid to linoleic acid ratio, linoleic acid, pod yield per plant, plant height, primary branches per plant, reaction to rust, late leaf spot and Spodoptera litura indicating predominance of additive gene effects .Superior high oleic (>72%) recombinant lines (75-4-3-3 and 76-2-1-5) were identified with better agronomic traits of pod yield and foliar disease resistance that can be tested on large scale over locations for their commercial exploitation. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/69841 | |
| dc.publisher | UAS Dharwad | en_US |
| dc.sub | Genetics and Plant Breeding | |
| dc.these.type | Ph.D | |
| dc.title | Genetic Enhancement of Oleic Acid Content in GroundNut(Arachis Hypogaea L.) | en_US |
| dc.type | Thesis | en_US |