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SURVEY AND CHARACTERIZATION OF JACKFRUIT (Artocarpus heterophyllus Lam.) GERMPLASM AVAILABLE IN ANDHRAPRADESH TO IDENTIFY ELITE TREES

KrishiKosh

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Title SURVEY AND CHARACTERIZATION OF JACKFRUIT (Artocarpus heterophyllus Lam.) GERMPLASM AVAILABLE IN ANDHRAPRADESH TO IDENTIFY ELITE TREES
 
Creator VADDEMGUNTA CHANDRASEKHAR
 
Contributor Dr.M. RAJASEKHAR
 
Subject systematic work regarding characterization ,explore the variability ,biochemical characters
 
Description Jackfruit (Artocarpus heterophyllus Lam.) is one of the most important and unusual fruit of the Moraceae family which includes fig and mulberry. However, systematic work regarding characterization of jackfruit germplasm and study of genetic diversity is limited in India. Hence the present investigation was conducted at Horticultural Research Station, Venkataramannaguem, during the year 2011-2012 on 33 genotypes of jackfruit.
Major objectives of the study were to explore the variability in morphological characters of leaf and fruit and biochemical characters of fruit through a comprehensive survey in three districts of Andhra Pradesh.
A wide variation was noticed among the genotypes in all the three districts with respect to leaf characters like petiole length, leaf length, leaf width, leaf apex shape and leaf base shape except leaf margin.
Genotypes were surveyed in E.G, W.G, and Visakhapatnam districts and data were recorded from flowering to fruit maturity and based on season of fruit availability the genotypes were grouped into three namely i) early bearers (January - February), mid bearers (April - May) and late bearers (June - July). Most of the genotypes studied had their bearing on trunk and primary branches followed by bearing on trunk, primary, secondary branches.
Variation was noticed with respect to fruit shape, rind colour of jackfruit and flake colour at maturity. Wide variation was noticed in terms of biometric characters of fruit like stalk length of the fruits (2.57 cm to 7.35 cm), stalk diameter (1.60 cm to 3.05 cm), fruit length (23.50 cm to 56.75 cm), fruit diameter (15.50 cm to 31.00 cm), fruit weight (2.89 kg to 27.12 kg), fruit rind weight (1.07 kg to 7.40 kg), fruit rind thickness (0.66 cm to 2.24 cm), number of flakes per fruit (27 to 512), weight of flakes per fruit (0.84 kg to 14.45 kg), weight of fresh flake with seed (9.76 g to 39 g), weight of flake without seed (6.23 g to 32 g), flake: fruit ratio (10.45 % to 43.95 %), flake length (3.72 cm to 10.08 cm), flake width (2.29 cm to 5.27 cm), flake thickness (0.18 cm to 0.6 cm), and number of fruits per tree 18.5 to 217.5.
Significant variation was noticed with respect to biochemical characters of fruit like total soluble solids (19.7 o brix to 31.55 o brix); reducing sugars (6.05 % to 13.36 %); non- reducing sugars (8.34 % to 16 %); total sugars (18.65 % to 24.10 %) and β-carotene content (0.440 mg/100 g to 0.507 mg/100 g).
Genetic studies indicated high variability, heritability and genetic advance for the characters like number of flakes per fruit, number of fruits per tree, weight of flakes per fruit, fruit weight, weight of fresh flake with seed, weight of the fresh flake without seed and 100-seed weight indicating the effectiveness of direct phenotypic selection for improvement of these traits in jackfruit.
Significant correlation was noticed between the biometric characters of fruit like number of fruits per tree, fruit length and diameter, fruit weight, number of flakes per fruit, weight of flakes per fruit, rind weight, flake length, flake width, flake thickness, rachis length, rachis diameter, seed length, seed width, 100-seed weight suggesting good scope for improvement of yield.
 
Date 2016-07-23T13:10:40Z
2016-07-23T13:10:40Z
2014-07
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69569
 
Language en
 
Format application/pdf
 
Publisher Dr. Y. S. R. HORTICULTURAL UNIVERSITY