Morphological characterization of Loquat ( Eriobotrya Japonica Lindl.) Under Jammu Sub-Tropics
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Date
2021-03
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Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The present investigation entitled “Morphological characterization of loquat under Jammu sub- tropics” was carried out at Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu from 2019-20. The study was carried out on one hundred loquat genotypes to estimate the extent of genetic diversity by morphological and biochemical characterization using NBPGR descriptor. The genotypes evaluated during the investigation recorded significant amount of variability for various descriptive and quantitative characteristics. The descriptive data of tree characters revealed that among 100 genotypes, most of the genotypes have spreading tree habit (37.00 %), rounded tree crown shape (51.00 %) and medium foliage density (48.00 %). The leaf characters revealed most of the genotypes have elliptical lanceolate (49.00 %), remotely toothed (55.00 %), fine texture (78.00 %) and medium leaf size (52.00 %). Fruit length ranged from 2.84 to 4.61 cm, fruit width 2.25to 3.86 cm, fruit weight 10.87to 26.87 g, seed length 11.59 to 23.78 mm, seed width 10.03 to 18.90 mm, seed weight 2.27 to 5.89 g, number of seeds per fruit 1.66 to 4.33, pulp per cent 50.81 to 66.86 per cent, fruit yield 24.31 to 43.96 kg/tree and juice per cent 57.21 to 84.98 per cent. Majority of genotypes showed high juice per cent. Total soluble solids ranged from 10.03 to 11.62 oBrix, titratable acidity 1.02 to 1.61 per cent, TSS acid ratio 6.66 to 10.43, total sugars 7.99to 8.83 %, reducing sugars 4.70 to 5.81 per cent and non-reducing sugars 2.57 to 3.40 %. Phenotypic coefficient of variability was slightly higher in magnitude than genotypic coefficient of variability and broad sense heritability was high for all the characters. Genetic advance as percentage of mean varied from 4.54 % (total sugars) to 43.69 % (number of seeds per fruit). Correlation coefficients revealed that fruit weight showed positive phenotypic and genotypic correlation with fruit yield, seed length, juice per cent and pulp per cent. Five major components were detected using principle component analysis exhibiting 74.88 % of total variance. On the basis of cluster analysis all the genotypes were divided into seven clusters having 304.13 to 2915.52 inter-cluster distance and 462.21 to 823.93 intra-cluster distance. On the basis of the study three loquat genotypes were identified for important horticultural traits.
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Preferred for your work. Sheikh, A. A. 2020. Morphological characterization of Loquat (Eriobotrya japonica Lindl.) under Jammu Sub-tropics. M.Sc Thesis, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, India.