Genetic evaluation of some mango cultivars on relation to the chilling injury and storage ability
Aida M Allam
Abstracts Book, 6th International Postharvest symposium, 8-12 April 2009, Antalya, Turkey. 256 pages.
2009
บทคัดย่อ
Green mature mangoes, Mangifra indica L. (Ewais cv. as yellow and Zebda cv. as green varity) were harvested at fully mature stage and packed in carton boxes in single layer then stored at chilling temp.(5°c) and non chilling temp.(10°c) for three weeks.The mesocarp tissue to determin the membrane permeability by Electolyte Leakage % (EL%) and fatty acids composition. The genatic relation among 7 cvs. were determine based on the DNA bands. EL% for Ewais cv. increased dramitacally in 24 hrs. at 25°c+2 after 3 weeks of storage at 5°c, and the unsaturated fatty acids (14, 16, l8c atom) increased to max. after 7 days and then decreased rapidly and sharply in both cvs. Tolarance of Zebda cv.to CI was more than Ewais (green peel less sensitive than yellow). Only 16 primers gave amplified fragments ranging from 5780bp to 83bp. 127 bands were scored for the 16 primer. Specific RAPD markers for the cvs. peel were identified. The dendeogram of the cluster analysis was divided into clusters; one for green cv. and the other for coloured cv. The studied cv. possess a high degree of genetic diversity and these markers facilitate the mangement of mango germplasm for breeding purpose.