Stability Analysis in Grass Pea [Lathyrus sativus (L.)]

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dc.contributor.advisorMaloo, S. R.
dc.contributor.authorRaiger, K. L.
dc.date.accessioned2017-09-27T11:37:08Z
dc.date.available2017-09-27T11:37:08Z
dc.date.issued2007
dc.descriptionStability Analysis in Grass Pea [Lathyrus sativus (L.)]en_US
dc.description.abstractThe present study entitled “Stability analysis in grass pea [Lathyrus sativus (L.)]” was carried-out with sixteen diverse varieties/strains for seed yield, its components and quality parameters. The material was planted under two locations in four environments during rabi, 2005-06 and 2006-07 at Udaipur and Kota. Observations were recorded for eight yield contributing characters and one quality trait. Variability parameters, correlations and path analysis were computed for each environment and over pooled basis. Stability parameters were analyzed using the model (Eberhart and Russell, 1966). Superior varieties L-18, I-30 and R-33 were identified on the basis of their consistent per se performance in each environment and over pooled basis for seed yield and its component traits. I-18, I-30 and R-31 exhibited high seed protein content while I- 30 displayed superiority for seed yield as well as quality characters. Large genetic advance as percentage of mean coupled with high GCV and heritability were recorded for pods per plant and plant height in at least one environment and over pooled basis suggesting that selection for these traits would be effective for seed yield in grass pea. Association studies revealed that seed yield per plant was positively correlated at genotypic levels with branches per plant in at least one environment. Path analysis studies indicated that seed protein content contributed to seed yield indirectly with negative effect. A joint regression analysis of variance based over four environments indicated that genotypes differed significantly for almost all the characters except plant height and branches per plant. Environmental effects were also significant for all characters. Both linear and non-linear components were significant for all the characters. However, linear component was of higher magnitude for pods per plant, days to maturity, branches per plant, 100-seed weight, days to flowering, seed yield per plant and plant height. Superior varieties were identified with respect to their phenotypic stability for different environmental conditions. However, varieties namely I-30, L-08 and I-22 displayed high per se performance, above average response and stability for seed yield per plant and its components. For quality character varieties R-29, I-22, R-33, and L-07 had high per se performance for seed protein content under high management practices indicating that these entries could be exploited for solving malnutrition problem in developing country like India. Thus aforesaid these grass pea varieties appeared the most promising. To conclude the present study conducted in four environments at two locations in two years based over various estimates viz. variability parameters, correlations, path analysis and stability parameters. Grass pea varieties I-30, L-08 and I-22 appeared to be the most promising for seed yield as they were not only stable but also had high per se for pods per plant, 100-seed weight and branches per plant. Among these, R-29, I-22, R-33 and L-07 also possessed high protein content. The results so obtained were critically discussed to give an impetus to grass pea breeding programme. Thus, stability of seed yield per plant in L-08 and I-30 varieties was imparted by the stability of its component characters like pods per plant, seeds per pod, 100-seed weight, days to flower and days to maturity.en_US
dc.identifier.citationRaiger and Maloo, 2007en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810031887
dc.keywordsStability, Analysis, Lathyrus sativusen_US
dc.language.isoenen_US
dc.pages50en_US
dc.publisherMPUAT, Udaipuren_US
dc.research.problemStability Analysis in Grass Pea [Lathyrus sativus (L.)]en_US
dc.subPlant Breedingen_US
dc.subjectnullen_US
dc.themeStability Analysis in Grass Pea [Lathyrus sativus (L.)]en_US
dc.these.typeM.Scen_US
dc.titleStability Analysis in Grass Pea [Lathyrus sativus (L.)]en_US
dc.typeThesisen_US
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