EVALUATION OF SUPERIOR RECOMBINANT INBRED LINES FOR YIELD AND BACTERIAL WILT RESISTANCE IN TOMATO (Solanum lycopersicum L.)

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dc.contributor.advisorAMBRESH
dc.contributor.advisorGANIGER, VASANT M.
dc.contributor.advisorHONGAL, SHIVANAND.
dc.contributor.advisorY. S. MAHESH
dc.contributor.advisorPATIL, B. B.
dc.contributor.authorB. PRUTHVI BASAVARAJ.
dc.contributor.other
dc.date.accessioned2023-10-16T12:51:07Z
dc.date.available2023-10-16T12:51:07Z
dc.date.issued2020
dc.description.abstractThe investigation on “Evaluation of superior recombinant inbred lines for yield and bacterial wilt resistance in tomato (Solanum lycopersicum L.) was conducted at RHREC, Kumbapur, Dharwad, UHS, Bagalkote during rabi 2019. Sixteen superior recombinant inbred lines and two commercial varieties Anagha and Arka Vikas were evaluated in randomized block design with three replications for growth, yield and quality parameters under field condition. Completely randomized design with two replications was followed for screening for bacterial wilt resistance under sick pot condition. Higher GCV and PCV was observed for average fruit weight (g), number of locules per fruit, pericarp thickness (mm), number of fruits per cluster, fruit yield per hectare (t), fruit yield per plant (kg), number of branches per plant at 60 DAT and number of fruits per plant. This indicates the presence of sufficient variability in the superior RILs studied for the above traits and offers good scope for crop improvement by simple selection strategies. High broad sense of heritability was observed for all the traits studied. The high estimates of heritability coupled with high values of genetic advance over mean (GAM) was observed for all characters under study except days for first flowering, days for 50 per cent flowering, pH and TSS. This indicates predominance of additive component for these traits and hence direct selection would be more effective in improving these traits. Correlation and path analysis revealed that fruit yield per plant had highly significant and positive association with characters viz., average fruit weight, pericarp thickness, equatorial fruit diameter, polar fruit diameter and number of locules per fruit. Among these characters average fruit weight had high direct positive effect on fruit yield per plant followed by equatorial fruit diameter. Hence direct selection for these traits would be more useful in the improvement of yield per plant. Screening for bacterial wilt resistance revealed that COHBT-1, COHBT-4, COHBT-18, COHBT-55, COHBT-59, COHBT-60, COHBT-69 and Anagha were found to be resistant to bacterial wilt. Top five genotypes viz., COHBT-1, COHBT-69, COHBT-59, COHBT-60 and COHBT-4 were identified as best superior RILs with respect to yield per plant and resistant to bacterial wilt. Therefore, these lines need to be further assessed for their stability.
dc.identifier.otherUHS18PGM1083
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810198937
dc.keywordsHorticulture
dc.keywordsVegetable Science
dc.keywordsVegetables
dc.keywordsSuperior recombinant
dc.keywordsInbred lines
dc.keywordsBacterial wilt
dc.keywordsTomato
dc.keywordsAnagha
dc.keywordsArka Vikas
dc.keywordsBlock Design
dc.keywordsReplications
dc.keywordsLocules
dc.keywordsPericarp
dc.keywordsCluster
dc.keywordsHectare
dc.keywordsHeritability
dc.keywordsGenetic
dc.keywordsGenotypes
dc.keywordsUHS18PGM1083
dc.keywordsT646
dc.language.isoEnglish
dc.pages130p. (Due to pdf. conversion there is a difference in pages of soft copy and hard copy).
dc.publisherUniversity of Horticultural Sciences, Bagalkot. (College of Horticulture, Bagalkot).
dc.subVegetable Science
dc.themeEVALUATION OF SUPERIOR RECOMBINANT INBRED LINES FOR YIELD AND BACTERIAL WILT RESISTANCE IN TOMATO (Solanum lycopersicum L.)
dc.these.typeM.Sc
dc.titleEVALUATION OF SUPERIOR RECOMBINANT INBRED LINES FOR YIELD AND BACTERIAL WILT RESISTANCE IN TOMATO (Solanum lycopersicum L.)
dc.typeThesis
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