CORRELATION AND DIVERGENCE STUDIES IN NIGER
| dc.contributor.advisor | TRIVEDI, H.B.P. | |
| dc.contributor.author | RAM, SOHAN | |
| dc.date.accessioned | 2023-03-18T07:14:05Z | |
| dc.date.available | 2023-03-18T07:14:05Z | |
| dc.date.issued | 1987 | |
| dc.description | CORRELATION AND DIVERGENCE STUDIES IN NIGER | en_US |
| dc.description.abstract | NIGER (Guizotiaabyssinica, Cass) is a minor oilseed crop and cannot be further ignored by scientist in the present day scarcity of edible oil in general and tribal agriculture in particular. Success in the improvement in any crop is dependent upon the availability of information’s on the extent of variability, nature of correlation among various yield attributes and the extent of genetic diversity in the crop-population. forniger crop. These basic information’s are lacking Keeping all these in view the present investigation was carried out in 162-germplasm lines obtained from Niger Research Scheme. The experiment was conducted in western section of Ranchi Agricultural College Farm during kharif 1984. A wide range of variability was noticed for almost all characters, mainly for number of secondary and primary branches, seed yield and plant height. Genotypic coefficient of variation was appreciable in number of secondary branches, seed yield and number of capitulum per plant. High heritability associated with high genetic advance was recorded for plant height, capitulum diameter and number of secondary branches. Selection based on these characters was suggested for the improvement. Correlation studies revealed stronger association of almost all characters at genotypic level than corresponding characters at phenotypic level. Seed yield had shown strong and favourable relationship with number of capitulum per plant, plant height and number of secondary branches. Capitulum diameter and number of primary branches were positively but moderately associated with seed yield. Association between days flower and seed yield was negative. The path analysis revealed that number of capitulum and capitulum diameter had high and favourable direct and indirect effect to the seed yield. Genetic divergence study revealed that 161 germplasms were clustered in 32 chesters irrespective of their origin. Geographic diversity, though important, but was not solely responsible for genetic diversity. Many potential parents were identified for use in crossing programme for the improvement of the characters: For improvement of yield Comp-2-3-4, KIC-27, Ghoti No-2, NO-71, for number of capitulum and number of secondary branches. KIC-24, KIC-17, and Comp-2-3-4 were recognized as potential parents. The characters such as 1000-seed weight, days to mature, capitulum diameter, plant height and yield per plant were the potential factors contributed a lot towards divergence. It is suggested that selection based on number of capitulum per plant, plant height and number of secondary branches independently or jointly may be effective to increase seed yield in niger crop. Hybridization programme for the improvement of seed yield may be suggested with the use of Comp-2-3-4, KIC-17, KIC-24, KIC-27, NO-71 as the potential parents, for improvement in various yield components. | en_US |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810195427 | |
| dc.keywords | CORRELATION AND DIVERGENCE STUDIES IN NIGER | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 87P | en_US |
| dc.publisher | Birsa Agricultural University | en_US |
| dc.sub | Plant Breeding | en_US |
| dc.theme | CORRELATION AND DIVERGENCE STUDIES IN NIGER | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | CORRELATION AND DIVERGENCE STUDIES IN NIGER | en_US |
| dc.type | Thesis | en_US |