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vol.28 issue3POTASSIUM REQUIREMENT OF A HYBRID AND CULTIVATE CANOLA (BRASSICA NAPUS CV. OLEÍFERA) AND ITS EFFECT ON PRODUCTION IN TWO SOIL OF THE ANDISOLS REGION OF ARAUCANÍAFIRST RECORD FOR CATHARTUS QUADRICOLLIS AND CALLOSOBRUCHUS MACULATUS CULTURES ATTACKED BY THE MITE PYEMOTES TRITICI author indexsubject indexarticles search
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Idesia (Arica)

On-line version ISSN 0718-3429

Abstract

DE LA CRUZ-GUZMAN, Gumercindo H; ARRIAGA-FRIAS, Alberto; MANDUJANO-PINA, Manuel  and  GONZALEZ MORENO, Sergio. EFFECT OF THE DROUGHT ON SOME WATER AND MORPHOMETRIC VARIABLES IN FIVE AMARANTH GENOTYPES. Idesia [online]. 2010, vol.28, n.3, pp.87-95. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292010000300011.

The effect of the drought was evaluated on water and morphometric variables in Amaranthus caudatus, A. cruentus and A. hypochondriacus, races Azteca, Mercado and Nepal during the flowering state grown in greenhouse. It was determined relative water content (RWC), concentration of prolina in leaf and root, leaf area, number of leaves and partition of biomass. It was observed that A. cruentus and A. hypochondriacus race Azteca cultivated in drought, showed a significant diminution at the 14:00 hours in RWC. All the genotypes worked in drought showed significant increases in the concentration of prolina in root; in leaves, only races Azteca and Nepal denoted a significant increase. The foliar area except A. caudatus, showed a significant diminution in all the genotypes worked in drought. In the number of leaves, only races Azteca and Nepal showed a significant reduction. Considering the partition of biomass A. caudatus was the less sensible specie to the drought. The integrated analysis of the studied variables indicated that A. caudatus and A. hypochondriacus, race Nepal were the species with minor and major susceptibility to the drought respectively.

Keywords : Proline; relative water content; biomass partition; leaf area.

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