Date Received: 08-07-2022 / Date Accepted: 04-08-2023
This research was conducted to identify avocado trees with high quality of fruit as a source ofbreeding new avocado species. The survey was performed on individual avocado tree which had capable of fruiting in Tien Giang. The selected avocado trees recorded flowering characteristics., ratio of flowers on the tree, described fruit characteristics., and analyzed fruit quality criteria. In this study, four individual avocado trees were selected, displaying a capable of self-pollination and cross-pollination with flowers on the same tree, denoted as Cai Lay 1, Cai Lay 2, Cai Lay 3 and Cho Gao. They were well adapted to the conditions in Tien Giang province, yielding 70-120kg of fruit per tree every year. On average, the percentage of self-pollinated flowers accounted for about 33.31%, the group of semi-pollinated flowers accounted for about 11.25% and group A/group B flowers (which could not pollinate) accounted for about 51.45%. Those trees possessed fruit pulp moisture (ranged from 72.6-79.9%), fruit hardness (ranged from 1.03-1.37N) and high brix elevation (ranged from 10.0-12.0%). Out of them, Cai Lay 1 avocado indicated a higher lipid content (20.5%) and protein content (3.08%) than the Booth avocado varieties of class I, avocado 034 grown in Da Lat and avocado 034 grown in Tien Giang.
