DIALLEL ANALYSIS IN RIDGE GOURD (Luffa acutangula Roxb. L.)

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dc.contributor.advisorBHALALA, M. K.
dc.contributor.authorNIYARIA, REHANA
dc.date.accessioned2018-04-20T04:33:49Z
dc.date.available2018-04-20T04:33:49Z
dc.date.issued2000
dc.description.abstractRidge gourd is an important cucurbitaceous vegetable crop. It is grown in summer as well as rainy season. Due to wide variability, it holds potential for further improvement. The present investigation on ridge gourd comprised of a half-diallel set of 9 parents and 36 F, hybrids. The experiment was conducted in Randomized Block Design with 3 replications at Main Vegetable Research Station, Gujarat Agricultural University, Anand during kharif, 1999. Heterosis, combining ability and nature of inheritance were studied for 13 characters, namely, days to opening of first female flower, first female flowering node, days to first picking, primary branches per plant, main vine length, fruit weight, fruit length, fruit girth, fruits per plant, fruit yield per plant, seeds per fruit, 100-seed weight and total soluble sugars. Analysis of variance revealed significant differences among parents and hybrids for all the traits except fiiiit girth and weight for which the hybrids did not differ significantly. Considering the mean performance, parents Anand 1, JRG 7 and JRG 2 and hybrids PRG 7 x Anand 1, PRG 7 x JRG 2 and PRG 7 x JRG 5 were found to be superior for fruit yield per plant. These parents as well as hybrids also possessed high mean values for other yield contributing traits in the desirable direction. Several hybrids exhibited heterobeltiosis and economic heterosis for fruit yield and other characters. Heterosis for fruit yield is a result of combinational heterosis. The hybrids worth commercial exploitation of heterosis on the basis of both per se performance and heterosis were PRG 7 x Anand 1, PRG 7 x JRG 2 and PRO 7 x JRG 5. The existence of both additive and non- additive gene actions with a prominent role of non - additive one, was indicated by significant gca and sea variances for most of the characters. But for the expression of fruit length, fruit girth and fruits per plant, additive gene action played a pivotal role. The estimates of general combining ability effects revealed that parents Anand 1, JRG 2, and PRG 7 appeared to be good general combiners for fruit yield per plant and other yield attributes. A close relationship was found between per se performance and gca effects of the parents. The estimates of specific combining ability effects indicated that cross combinations PRG 7 x CHRG 2, PRG 7 x Anand 1 and PRG 7 x JRG 5 were significant for fruit yield and fruits per plant. Cross combinations PRG 7 x Anand 1 and PRG 7 x JRG 5 were also desirable for earliness. There was some degree of correspondence between per se performance and sea effects of hybrids as well as sea effects and heterobeltiosis for most of the traits. The findings, in the light of their implications in ridge gourd breeding programme have been discussed.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810044199
dc.keywordsDIALLEL ANALYSIS IN RIDGE GOURD (Luffa acutangula Roxb. L.)en_US
dc.language.isoenen_US
dc.publisherAAU, Ananden_US
dc.research.problemDIALLEL ANALYSIS IN RIDGE GOURD (Luffa acutangula Roxb. L.)en_US
dc.subGenetics and Plant Breedingen_US
dc.subjectPLANT BREEDING AND GENETICS, AGRICULTUREen_US
dc.subjectAN ANALYSISen_US
dc.themeDIALLEL ANALYSIS IN RIDGE GOURD (Luffa acutangula Roxb. L.)en_US
dc.these.typeM.Scen_US
dc.titleDIALLEL ANALYSIS IN RIDGE GOURD (Luffa acutangula Roxb. L.)en_US
dc.typeThesisen_US
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