GENETIC EROSION QUANTIFICATION IN ULLUCUS (Ullucus tuberosus Caldas), OCA (Oxalis tuberosa Mol.) AND MASHUA (Tropaeolum tuberosum R.&P.) IN AGROECOSYSTEMS OF THE PROVINCES OF CAÑAR, CHIMBORAZO AND TUNGURAHUA – ECUADOR
نویسندگان
چکیده
An alarming loss of genetic variability of three Andean tubers (Ullucus tuberosus, ullucus; Oxalis tuberosa, oca; and, Tropaeolum tuberosum, mashua) has been observed during the last decades due to many factors such us the introduction of new varieties, droughts, changes in food habits, encroaching agriculture, deforestation and the migration from rural to urban areas. Thus, a pilot study was carried out to determine levels and rates of genetic erosion in these Andean crops by means of both morphological and molecular characterisations of these species, as well as a socioeconomical survey in highland communities from the provinces of Cañar, Chimborazo and Tungurahua (Ecuador).
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