STUDIES ON VARIABILITY IN GUAVA (Psidium guajava L.) OF SEEDLING ORIGIN

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Date
2018-10
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UHF, NAUNI
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ABSTRACT The present study “Studies on variability in Guava (Psidium guajava L.) of seedling origin” was conducted to assess variation among existing guava trees of seedling origin. A total of 60 healthy and bearing guava trees of seedling origin were marked for detailed studies during 2017-18. Marked trees were observed to be erect, spreading and drooping in growth habit, varying in tree height (4.010.6 m), trunk girth (38.3-112.1 cm), extension growth of twigs (15.7-22.2 cm), fruit yield (16.034.8 kg/tree) and yield efficiency (2.27-24.6 g/cm2). The variation was observed in shape of leaf (round, ovate, obtrullate, obovate and oblong) and colour of mature leaf (green to dark green). Variation was also observed in fruit characters like fruit shape (round to pyriform), colour of fruit skin (yellow, yellow white and yellow green), fruit shape at stalk end (rounded to broadly rounded). The observed range of variation for fruit weight, fruit length, fruit width, length/width ratio, number of seeds/fruit, seed weight, TSS, acidity, ascorbic acid, total sugars, reducing sugars and non-reducing sugars was 65.22-128.57 g, 4.40-6.18 cm, 4.90-6.51 cm, 0.87-1.31 cm, 12-411, 0.14-5.72 g/fruit, 7.35-11.83o Brix, 0.270-0.627 %, 138.19-249.43 mg/100g, 5.13-8.38 %, 3.22-5.44 % and 1.81-2.83 %, respectively. Out of 60 guava seedling trees studied four trees were designated as “elite” based on overall distinct attributes. The identification of one seedless (Tree No. 22), one near seedless (Tree No. 21) and two red fleshed genotypes (Tree No. 57 and Tree No. 58) having desirable horticulture traits was a significant finding of the present investigations. Signature of Major Advisor Signature of the
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