Stability Analysis for Yield and Yield Attributing Traits in Isabgol [Plantago ovata Forsk.]
| dc.contributor.advisor | Amit Dadheech | |
| dc.contributor.author | MONIKA SHAHANI | |
| dc.date.accessioned | 2024-08-14T10:38:42Z | |
| dc.date.available | 2024-08-14T10:38:42Z | |
| dc.date.issued | 2024 | |
| dc.description.abstract | The present investigation entitled “Stability Analysis for Yield and Yield Attributing Traits in Isabgol [Plantago ovata Forsk.]” was carried out in three environments viz., E1 (Rabi-2022-2023, Instructional Farm, Rajasthan College of Agriculture, Udaipur), E2 (Rabi-2022-2023, Agriculture Research Station- Banswara) and E3 (Rabi-2022-2023, Krishi Vigyan Kendra- Chittorgarh). The experimental material comprised of 70 genotypes, including 19 parents, 48 crosses with 3 checks (Niharika, VI-3, GI-2) were evaluated in randomized block design with three replications. The observations were recorded on ten randomly selected plants for all the nineteen traits under study in order to generate information on heterosis, combining ability, genotype x environment interaction and stability parameters. The analysis of variance indicated that the sum of squares due to genotypes weresignificant for all the characters in all the three environments. The pooled analysis of variance revealed that the mean sum of squares due to genotypes and environments were found significant for all the traits under consideration.The mean sum of squares due to parents vs crosses were also found significant for the traits in all the environments except days to flowering in E1 and E3, days to maturity in E2, number of tillers per plant in E1 and E2, spike length in E2, length of peduncle in E1, E2and E3, number of leaves per plant in E3,1000 seed weight in E2 and E3 and biological yield per plant in E1, E2 and E3. The mean sum of squares due to genotype x environment were found significant for most of the traits viz, days to maturity, plant height, number of spikes per plant, length of peduncle, number of leaves per plant, seed yield per plant, husk recovery content, crude fiber, total soluble sugar Similarly, themean squares due to parents, crosses and parents vs crosses were also found significant for allthe traits under the study The per se performance indicated that parental line L12exhibited maximum seed yield per plant along with other contributing traits.Among the crosses, L7 x T1 exhibited maximum seed yield per plantalong with other contributing traits. Five crosses out of forty-eight viz., L7 x T1, L10 x T1, L6 x T2, L10 x T2 exhibited significant positive economic heterosis in all the three environments individually and on thepooled basis. Among these crosses the highest positive economic heterosis was exhibited by L7 x T1 for seed yield per plant and also exhibited significant estimates of economic heterosis in desirable direction for other component traits. The analysis of variance for combining ability revealed that mean sum of squares due to lines, testers and line x tester were found to be significant for all the characters in all the three environments except days to maturity in E2, number of spikes per plant in E1 and E3, length of peduncle in E1 and E2, length of leaves in E1, number of spikelets per spike in all the three environments, biological yield in E1 and total soluble sugar in E1 and E2 environments due to tester. An overall appraisal of GCA effects indicatedthat the parental line L7, L10 and L5 were good combiners for most of the traits on the pooled basis.A perusal of SCA effects revealed that number of the crossesexhibited consistently high SCA effects for all the traits studied. However, for seed yield per plant highest estimates were recorded forL11 x T3 followed by L16 x T1, L6 x T2, L10x T2, L7 x T1. The stability analysis indicated that cross L10 x T2 for seed yield per plant may be suitable for general cultivation in a variety of environments. The crosses viz., L1 x T1, L2 x T1, L3 x T1, L5 x T1, L6 x T1, L9 x T1, L16 x T1, L6 x T2, L11 x T2 for seed yield per plantwere found suitable for cultivation under favourable environment. The crosses L4x T1, L7 x T1, L10 x T1, L15 x T1, L1 x T2, L3 x T2, L4 x T2, for seed yield per plant were found suitable for cultivation under unfavourable environment. The study identifies four promising crosses L7 x T1 and L10 x T1, L10 x T2, L6x T2 demonstrating high per se performance, significant economic heterosis and positive SCA effects for seed yield per plant. Notably, L7 x T1 and L10 x T1involved parents with good x poor GCA effects, while L10 x T2, L6x T2involved parents with good x good GCA effects. These crosses are recommended for further advancement, either may be advancedto isolate transgressive segregants in subsequent generations or may be subjected to a suitable population improvementsuch as intermating among F2 segregants followed by recurrent selection. Further the parents with good general combining ability can be used for hybridization programme. | |
| dc.identifier.citation | Dadheech A. and Shanani M. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810213249 | |
| dc.language.iso | English | |
| dc.pages | 224 | |
| dc.publisher | MPUAT, Udaipur | |
| dc.research.problem | Stability Analysis for Yield and Yield Attributing Traits in Isabgol [Plantago ovata Forsk.] | |
| dc.sub | Genetics and Plant Breeding | |
| dc.theme | Stability Analysis for Yield and Yield Attributing Traits in Isabgol [Plantago ovata Forsk.] | |
| dc.these.type | Ph.D | |
| dc.title | Stability Analysis for Yield and Yield Attributing Traits in Isabgol [Plantago ovata Forsk.] | |
| dc.type | Thesis |