Study of Rice genotypes for dry direct seeded condition
| dc.contributor.advisor | Singh, . S. P. | |
| dc.contributor.author | Kanishk, Saraf | |
| dc.date.accessioned | 2021-10-09T11:18:38Z | |
| dc.date.available | 2021-10-09T11:18:38Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | Rice production is getting problematic by rising water scarcity and increasing labour costsaround the globe because of climate change, population growth, increased industrial uses and increased demand for the labour respectively. Direct seeded rice hasemerged as one of the potential alternativeto reduce water requirement and cost of cultivation. Thepresent investigation includes theidentification of suitablegenotype(s) for dry direct seeded condition. Fifty diverse genotypes were evaluatedin alpha lattice design with two replications and observations were taken for twenty-five characters. Significant variations among the genotypes were found for all the characters under study except for the relative growth rate. Sixteen characters, namely germination%, total fresh weight (25 and 55 DAS), total dry weight (25 and 55 DAS), Early seedling vigour, SPAD, Flag leaf length, flag leaf breadth, leaf area index,carbohydrate content, chlorophyll stability index, number of tillers per m2, days to 50% flowering, harvest index and dry matter efficiency were found to be significantly and positively correlated with grain yield. Of these,twelve characters namelyearly seedling vigour, seedling height, SPAD, Days to 50% flowering, no. of tillers per m2, flag leaf length, flag leaf breadth, leaf area index, carbohydrate content, harvest index and dry matter efficiencyexhibitedpositive direct effect, whilerest of the charactersshowed indirect effect on grain yield. Fifty genotypes have been studied for molecular characterization using SSR markers. Among theSSR markers used in the study, RM 171 generated maximum number of alleles (07). Maximum polymorphism information content (PIC) values (0.461) was found in RM 105. PIC values have revealed that the RM105 to be the best marker for diversity analysis among the genotypes followed by RM 316, RM 11 and RM 495. The UPGMA cluster dendogram has grouped the genotypes into VI clusters with cluster I containing highest number of genotypes, followed by cluster IV with 0.25 similarity coefficient. | en_US |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810176850 | |
| dc.keywords | Direct seeded rice, dry direct condition, SSR markers, Polymorphism, PIC value, dendogram. | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 100 | en_US |
| dc.publisher | Department of Plant Breeding and Genetics, BAU, Sabour | en_US |
| dc.sub | Plant Breeding | en_US |
| dc.theme | Molecular Biotechnology & Genetic Engineering | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Study of Rice genotypes for dry direct seeded condition | en_US |
| dc.type | Thesis | en_US |