INTERGENERIC HYBRIDIZATION AND PROGENY EVALUATION IN PAPAYA (Caricapapaya L.)
Loading...
Date
2015-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bengaluru).
Abstract
Studies on “Intergeneric hybridization and progeny evaluation in Papaya (C.papaya L.)” was carried out in the Division of Fruit crops, Indian Institute of Horticultural Research, Bengaluru during 2014-2015. Two systematic experiments were carried out; to overcome the crossability barriers between Carica papaya hybrid varieties ArkaSurya and ArkaPrabhath with Vasconcelleacundinamarcensis and to evaluate the advanced intergeneric hybrid progenies (38) of the cross Arka Surya x V. cauliflora for PRSV tolerance. In overcoming the intergeneric crossability barriers,among the nutrients tried, the combined effect of Sucrose 5 per cent + Boric acid 1.0 per cent + Calcium Nitrate 1.0 per cent + Magnesium Sulphate 1.0 per cent + Potassium Nitrate 1.0 per centresulted in significantly highest mean value for fruit set (58.50%), number of fruits harvested (31.00), number of fruits recovered with fertile seeds (5.0) and number of seeds recovered (282.00).
In the evaluation of advanced intergeneric hybrid progenies (38) of the combination Arka Surya X V. cauliflorafor PRSV tolerance,significant differences were observed among theprogenies for vegetative characters such as plant height, stem girth and canopy spread and fruit charactersviz., fruit weight, fruit length, pulp thickness,number of fruits, yield per tree, total soluble solids, carotenoids and lycopene. Traits like fruit weight, fruit width, fruit volume were found to be significantly correlated both phenotypically and genotypically. On the basis of PRSV tolerance, fruit and yield parameters, seven progenies viz., R5P16, R6P16, R7P16, R14P7, R17P16, R19P1and R35P10 were identified for further advancement.