Genetic diversity of common figs (Ficus carica) cultivated in Thailand determined by 18S ribosomal RNA sequence
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Abstract
The common fig (Ficus carica) is an economically important fruit crop widely consumed worldwide. In this study, the genetic diversity of 5 varieties of figs are commonly grown in Thailand as Longue d’Aout, Col De Dama Blanca, Weihai, Iraqi, and White Israel which showed highly similar 18S rRNA, and similar to 2 other related species of Ficus palmata and Ficus johannis. The only exception is shown in the Iraqi fig, which possessed 2 positions of single nucleotide substitutions (C to T). Interestingly, Iraqi is found to be a fig variety with distinct characteristics that facilitated rapid growth in the tropics e.g. single-lobed leaf, robust growth, and nematode-resistance, and is commonly used as a rootstock. In conclusion, this analysis is provided a fundamental starting point for further works on figs molecular genetics, which can facilitate fig commercialization and further breeding in Southeast Asia.
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