Agro–morphological characterization and genetic diversity analysis of aromatic rice (Oryza sativa L.) genotypes using SSR Markers.
| dc.contributor.advisor | Singh, K. Noren | |
| dc.contributor.author | Pramod Kumar | |
| dc.date.accessioned | 2023-10-13T12:43:17Z | |
| dc.date.available | 2023-10-13T12:43:17Z | |
| dc.date.issued | 2019-03 | |
| dc.description.abstract | Rice (Oryza sativa L.) has been referred as “Global Grain” and it is the most important cereal crop belonging to Poaceae family with chromosome no. 2n = 24. Being rich in flora and fauna, the North East Region of India is home to various locally adapted aromatic and quality land races of rice viz. Joha, Chakhao and Tai cultivars grown in the states of Assam, Manipur and Mizoram respectively and a number of other aromatic rice cultivars are also grown in the states of Sikkim and Tripura viz. Krishna Bhog, Brimphul, Kalanunia and local Basmati. The basic requirement of a crop improvement programme is the information on extent of variation, estimates of heritability and genetic advance in respect to yield and yield contributing traits. Therefore, characterization of germplasm is of great significance for current and future agronomic and genetic improvement of the crop. The present study entitled “Agro–morphological characterization and genetic diversity analysis of aromatic rice (Oryza sativa L.) genotypes using SSR markers” was conducted to evaluate a set of aromatic rice based on agro-morphological traits and SSR markers. A total of 42 different aromatic rice genotypes including 4 check varieties and 26 SSR markers were used in the experiment. All the selected genotypes were evaluated in an augmented experimental design. A total 51 traits both morphological and quantitative nature were recorded. Grain yield per plant is significantly correlated with numbers of effective tillers and number of seeds per panicle. The analysis of variance showed that all the quantitative traits under study except effective tillers per plant were highly significant value at 1% and 5% level of probability. The genetic distance between the 42 accessions of aromatic rice ranged from 0.03 to 0.87. Out of 26 primers used 16 polymorphic primers. Genotype RM495 (82.6%) recorded highest per cent of polymorphism whereas RM124 (2.4%) recorded lowest per cent of polymorphism. Out of 42 aromatic genotypes of rice IC-342368 and IC-401209 were maximum genetic distance on the basis of morphological analysis. Whereas, maximum genetic dissimilarity was found between IC-137401 and Ja-Shulia genotypes. The genetic dissimilarity between the 42 accessions of aromatic rice ranged from 0.06 to 0.42. Hence it will be used as further breeding programme as a new tools in favour of crop improvement. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810198820 | |
| dc.language.iso | English | |
| dc.pages | 83p. | |
| dc.publisher | College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University , Imphal | |
| dc.sub | Genetics and Plant Breeding | |
| dc.theme | Academic Research | |
| dc.these.type | M.Sc | |
| dc.title | Agro–morphological characterization and genetic diversity analysis of aromatic rice (Oryza sativa L.) genotypes using SSR Markers. | |
| dc.type | Thesis |