MORPHOLOGICAL AND PHYSICO-CHEMICAL DIVERSITY IN SOME INDIGENOUS MANGO (Mangifera indica L.) GERMPLASM OF PAKISTAN

Abstract

Mango is the second major fruit crop of Pakistan. A large number of unexplored indigenous mango germplasm with great economic significance is present in the country. Hence, 425 mango accessions were studied from Azad Jammu & Kashmir (AJK) as well as Northern and Southern Punjab to explore the genetic diversity. Total 33 traits (25 qualitative and 8 quantitative) enabled the assessment of morphological and physico-chemical diversity of the studied indigenous mango germplasm. The first three principal components (PCs) contributed 68.06% variability among all mango accessions. The PCs also successfully grouped mango accessions according to their morphological and physico-chemical characteristics. Trunk height, tree circumference, crown diameter, leaf colour, leaf blade length, petiole length, inflorescence length, inflorescence width, fruit shape, fruit weight, soluble solid contents, titratable acidity, sugar:acid ratio, reducing sugars, non-reducing sugars and total sugars were found highly variable. Many of these characters are of substantial economic significance and could be used as breeding goals to increase the germplasm repository as well as fruit yield and quality. In conclusion, morphological and physico-chemical traits were highly useful for mango germplasm characterization. Several accessions also showed potentially good traits which could be used to develop new mango cultivars through future breeding schemes.

Phenotype characterization and diversity assessment of mango (Mangifera indica L.) cultivars in Ethiopia

“…These characters are among the important attributes that could be utilized for classification of the cultivars (Sharma et al, 2016). Inline to this, Toili et al (2016), Krishnapillai and Wijeratnam (2016), Joshi et al (2013), Ribeiro et al (2013) and Raza et al (2017) report on mango cultivars in Kenya, Sri Lanka, Indian, Brazil and Pakistan, respectively showed significant variability with the aforementioned characters and suggested for **Significant at p<0.01, SE=standard error and CV (%) = coefficient of variation in percent. a Analysis of variance was not computed since the data were collected from a single tree.…”

Morphological characterization and diversity analysis of local mango (Mangifera indica L.) genotypes from far western hill of Nepal

“…The trunk circumference among 33 mango genotypes varied from 1.2m to 5.6m with mean value of 3.06m and 31.6% coefficient of variation (C.V.) ( 2). There were report of variation in leaf blade length, width and petiole length among mango genotypes (Rymbai et al, 2014;Toili et al, 2016;Raza et al, 2017).…”