Mangifera pentandra trees are common in Northeast Thailand, where they are known locally as
kalon mango or
paa mango.
Kalon mango is recognized as being better-tasting than
paa mango, but both belong to the same species. The differences between
kalon and
paa mangoes have not been previously examined. We recorded and interpreted indigenous knowledge of
M. pentandra in Northeast Thailand, thereby contributing relevant information to future generations of local people. We also considered people–plant relationships in the process of fruit tree domestication. Our survey included 171 trees of
M. pentandra found growing in crop fields, along roadsides, and in close vicinity to human habitats. All of these sites had been transformed from an original vegetation of mixed dipterocarp forest. One-third of the
M. pentandra trees in our survey were recognized locally as
kalon mango, while most of the remaining trees were
paa mango.
Kalon mango fruits were bigger than those of
paa mango and had a higher sugar content. A dense, dome-shaped canopy, thin, narrow leaves, and pale-brown bark distinguished
kalon mango trees from
paa mango. Many
paa mango trees found growing in crop fields were very large; the smaller
kalon mango trees tended to occur near human settlement. We therefore propose that
paa mango trees are remnants of natural forest and that
kalon mango trees have been planted recently.
Kalon mango may be the product of subconscious selection for superior fruits that are larger and better-tasting than the wild type.
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