CHARACTERIZATION OF ELITE TREES OF JACKFRUIT (Artocarpus heterophyllus LAM.) FROM SOUTHERN KARNATAKA
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Date
2014-06-20
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University of Agricultural Sciences, Bangalore
Abstract
An experiment on characterization of elite trees of jackfruit (Artocarpus heterophyllus Lam.) was carried out between the years 2008 and 2010 in five districts of southern Karnataka. Two elite seedling progenies of jackfruit from each district was short listed and the promising progenies identified were Kachahalli-1 and Kachahalli-2 from Bangalore Rural District; Janagere-1 and Janagere-2 from Ramanagara District; Lalbagh-1 and Lalbagh-2 from Bangalore Urban District; Gubbi-1 and Gubbi-2 from Tumkur District and Sakkarayapattana-1 and Sakkarayapattana-2 from Chikmagalur District. From among the ten different elite jackfruit trees evaluated, Kachahalli-1 emerged as an outstanding tree. It is a high yielder (166.66 fruits/tree /year), fruits were uniform in size, mean weight of fruit was maximum (11.61kg/fruit), number of bulbs per fruit was also maximum (79.88/fruit), the bulbs were also large in size (length: 9.34cm, breadth: 5.28cm and thickness : 0.59cm). The bulbs were crisp and attractive deep orange in colour. Kachahalli-1 tree also registered highest TSS (27.330B) and lowest titratable acidity (0.18% malic acid). TSS: acid ratio was also highest in Kachahalli-1 tree (148.43). Both total sugars and reducing sugar content was maximum in Kachahalli-1 tree (20.87% and 7.46% respectively). The fruits harvested from Kachahalli-1 tree emerged as an outstanding by registering highest score of 88.83 out of 100 in the organoleptic qualities. From the present study Janagere-1 tree was the second best jackfruit tree where, TSS of fruit bulb was 26.370B, total sugars 19.67%, reducing sugar 7.41%, non-reducing sugar 12.21% and TSS: acid ratio was 139.64: 0.19. The overall acceptance score for the organoleptic qualities was 87.05 out of 100. Gubbi-2 tree was the third best tree out of ten trees studied and the organoleptic score for this tree was 82.55 out of 100.
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