EVALUATION OF PHYSICO-CHEMICAL PROPERTIES OF SELECTED GENOTYPES OF “APPLE COLOUR” GUAVA (Psidium guajava L.)
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Date
2008-08-19
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University of Agricultural Sciences GKVK, Bangalore
Abstract
The studies on evaluation of Physico-Chemical properties of selected
genotypes of 'Apple Colour' guava was carried out at Department of Horticulture,
UAS, GKVK, Bangalore during the year 2006-07 on seven year old plants.
Ten seedling progenies of Apple Colour guava were evaluated for yield and
quality of fruits. Among these seedling progenies, ACG-8 was out standing with
the yield of 19.40 kg/plant (203 fruits per plant or 5.39 t/ha) having fruits of
medium sized (95.60 g) with current red colour, attractive shape and good volume
(89.86 ml). This selection has 291 seeds per fruit with 3.06 g seed weight and low
seed density (1.09). The fruits had a TSS of 15.15 %; moderate to high acidity
(0.37% citric acid) and ascorbic acid content of 286.40 mg per 100 g. The total
sugars (7.78 %), reducing sugars (4.36 %), non reducing sugars (3.42 %) are
moderate in this selection with good sugar acid blend (21.16). The fruits scored
highest in the organoleptic characters like peel colour (13.74 score out of 15), pulp
colour (12.02 out of 15), pulp flavour (16.52 out of 20) and taste of pulp (25.22
out of 30). Further, since the overall acceptance of the fruit for organoleptic
qualities was also highest (83.44 out of 100) this selection could be utilized for
commercial cultivation.
Correlation studies on different yield contributing characters revealed
significant positive association of various yield attributing characters viz., number
of fruits per plant, fruit width, fruit weight and fruit volume with fruit yield per
plant indicating that selection for fruit yield should indirectly depend on these
traits.
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