Stability analysis for fruit yield and component traits in GMS based hybrids of chilli (Capsicum annuum L.)

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dc.contributor.advisorSharma, Akhilesh
dc.contributor.authorSingh, Vivek
dc.date.accessioned2022-09-29T11:15:12Z
dc.date.available2022-09-29T11:15:12Z
dc.date.issued2022-08-23
dc.description.abstractThe experimental material comprised of 12 GMS based hybrids and 4 checks namely, Him Palam Mirch 1, Him Palam Mirch 2, Surajmukhi and CH-27 which were evaluated in Randomized Complete Block Design with three replications at five diverse locations by creating seven environments during summer 2021 viz., field conditions at Palampur (E1), conventional farming polyhouse conditions at Palampur (E2), natural farming polyhouse conditions at Palampur (E3), field conditions at Bajaura (E4), Berthin (E5), Mandi (E6) and Dhaulakuan (E7). The analysis of variance showed that genotypes were highly significant for majority of the traits across environments with a few exceptions in some locations. On the basis of mean performance, hybrids namely, DPCHYB 10, DPCHYB 5, DPCHYB 12 and DPCHYB 8 were the top ranked hybrids for green, red ripe and dry fruit yield per plant. Joint regression analysis revealed that G × E (linear) was found to be significant for all the traits except recovery percentage of dry chilli. E + (G × E) were also found significant for majority of the traits except fruit length, pedicle length, number of primary branches and recovery percentage of dry chilli. Of the 16 genotypes, only seven hybrids showed stability for marketable green fruit yield based on Eberhart and Russel model that include high yielding hybrids viz., DPCHYB 10, DPCHYB 8 and DPCHYB 5. G+GE biplot model extrude that E5 was the most representative and discriminating environment for marketable green fruit yield and was suitable for selecting generally adapted genotypes whereas, for marketable red ripe fruit yield per plant and dry fruit yield per plant, E2 and E4 were discriminating and non representative test environments that may be useful for identifying genotypes that were specifically suitable under certain situation and for deleting unstable genotypes. Mean vs stability biplot revealed that hybrids DPCHYB 10 and DPCHYB 5 had the highest marketable green fruit yield per plant followed by DPCHYB 12 and DPCHYB 8 while hybrids DPCHYB 10, DPCHYB 8, DPCHYB 5 and DPCHYB 12 were most promising both for red ripe and dry fruit yield. ‘Which won where’ polygon view of GGE biplot model showed that the top green fruit yielding genotype DPCHYB 5 was the most responsive in E1, while DPCHYB 10 was the winning genotype for rest of the environments. Similarly, for marketable red ripe and dry fruit yield per plant, top high yielding genotype DPCHYB 10 was the most predominant in E6, E7, E5, E4, E2 and E3 and DPCHYB 8 in E1. Three primers namely, CAM 855, CAM 647 and HPMSE 004 were highly polymorphic and clearly validated the hybridity of 12 hybrids with respect to their respective male and female parents e.g., CAM 647 for DPCHYB 2, DPCHYB 7, DPCHYB 8 and DPCHYB 12, HPMSE 004 for DPCHYB 3, DPCHYB 4, DPCHYB 6 and DPCHYB 10, and CAM 855 for DPCHYB 1, DPCHYB 5, DPCHYB 9 and DPCHYB 11.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810188281
dc.keywordsenvironments, significant,stability.en_US
dc.language.isoEnglishen_US
dc.pages166en_US
dc.publisherpalampuren_US
dc.subVegetable Scienceen_US
dc.themeTo assess the genotype-environment interaction for fruit yield and related traits to identify stable and high yielding chilli hybrid combinations, and to determine the genetic purity of hybrids through molecular markers.en_US
dc.these.typeM.Scen_US
dc.titleStability analysis for fruit yield and component traits in GMS based hybrids of chilli (Capsicum annuum L.)en_US
dc.typeThesisen_US
dc.typeThesisen_US
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