ISHS Acta Horticulturae 629: XXVI International Horticultural Congress: The Future for Medicinal and Aromatic Plants
VARIATION IN MORPHOLOGICAL AND BIOCHEMICAL CHARACTERS IN GENOTYPES OF MACA AND YACON |
| Authors: | A. Lebeda, I. Dolezalová, K. Dolezal |
| Keywords: | Andean crops, functional food, isozymes polymorphism, Lepidium meyenii, Smallanthus sonchifolius, morphological characters |
| Abstract:
A set of 15 genotypes of maca (Lepidium meyenii Walp.) and 25 genotypes of yacon (Smallanthus sonchifolius (Poepp. & Endl.) H. Robins.) planted in field conditions was studied for morphological and biochemical variability. Morphological characterization of maca included evaluation of length, hypocotyl weight, shape, skin and flesh colour. In yacon we evaluated shape and colour of root tubers, character of skin, flesh colour and number of roots. Preliminary results showed that maca forms hypocotyls of small length (up to only 6 cm for genotype 168) in the Czech environmental conditions. From the viewpoint of yacon root tubers production, there were the most productive genotypes 25, 51, 75 and 85 (3.8 kg), in opposite the lowest yield was recorded in genotype 1237 (1.4 kg). Isozymes polymorphism of esterases and acid phosphatases was also used for characterization of the maca and yacon genotypes. No variation in acid phosphatase isozymes was recorded in either species. However, for esterase zymograms variation was found with three groups in maca and four groups in yacon. The biochemical analyses of dietetic features of tuberous roots are in progress. | |
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