Genetic Variability Studies in Free Threshable and Spot Blotch Resistant Derived Dicoccum Lines
| dc.contributor.advisor | V. Rudra Naik | |
| dc.contributor.author | Vijayakumar Hokrani | |
| dc.date.accessioned | 2016-11-12T13:27:41Z | |
| dc.date.available | 2016-11-12T13:27:41Z | |
| dc.date.issued | 2011 | |
| dc.description.abstract | Dicoccum wheat (Triticum dicoccum (Schrank) Schulb) is nutritionally superior compared to durum and aestivum. The present investigation was carried out to study genetic variability, free threshability and spot blotch resistance in 95 advanced generation mutant lines. Development of free threshable lines which are resistant to spot blotch (Helminthosporium sativum) is of prime requirement. These 95 mutant lines were sown along with five checks during rabi 2010-11. Observation on yield, yield components, morpho-physiological, grain quality parameters and disease scoring for spot blotch and rust were recorded. Analysis of variance revealed the prevalence of significant difference among the genotypes for all the morphological and quality parameters studied. GCV and PCV were found to be high for seed yield per plant and tillers per plant. Heritability and genetic advance over mean were high for thousand grain weight (g) seed yield per plant, spike length, tillers per plant and seeds per spikelet. Quality parameters like starch content, wet gluten and sedimentation value shown significant positive association with yield. Among 95 mutants 15 shown immune and remaining were resistant for spot blotch disease. Considerable amount of genetic diversity was observed in the material with respect to tillers per plant and wet gluten. Out of thirteen characters studied six shown direct effect on yield. Comparative study among mutants revealed that direct mutation was superior in comparison with hybridization followed by mutation. All the twenty RAPD primers used in the study were polymorphic. Mutant No. 845, 873, 2292, 2758 and 2761 were found to be superior in comparison with both durum and dicoccum parents with respect to yield and yield attributing traits. Outstanding productive and potential mutants could be evaluated to isolate the superior high yielding free threshable lines and resistance to spot blotch disease | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/85227 | |
| dc.research.problem | Genetic Variability Studies in Free Threshable and Spot Blotch Resistant Derived Dicoccum Lines | en_US |
| dc.sub | Genetics and Plant Breeding | en_US |
| dc.subject | Genetics and Plant Breeding | en_US |
| dc.theme | Genetic Variability Studies in Free Threshable and Spot Blotch Resistant Derived Dicoccum Lines | en_US |
| dc.title | Genetic Variability Studies in Free Threshable and Spot Blotch Resistant Derived Dicoccum Lines | en_US |
| dc.type | Thesis | en_US |