Variability in root morpho-physiological traits (root elongation rate and sulfate uptake rate) involved in the plant response to water-nutritional stress was highlighted in six sugar beet genotypes characterized by different root yield. The above traits, evaluated on sixteen-day-old seedlings grown in hydroponics, were significantly correlated with root yield. Furthermore, under field conditions, the sugar beet genotype (ISCI 6) characterized by the highest root yield and therefore root elongation rate and sulfate uptake rate with respect to the lowest (ISCI 1), showed higher root length density (RLD) and leaf relative water content (RWC). The association of these morpho-physiological traits might be considered determinant of sugar beet productivity under conditions of water-nutritional stress.
Genetic variability in morpho-physiological traits in sugar beet
STEVANATO, PIERGIORGIO;SACCOMANI, MASSIMO;TAMINO, GIANNI;
2004
Abstract
Variability in root morpho-physiological traits (root elongation rate and sulfate uptake rate) involved in the plant response to water-nutritional stress was highlighted in six sugar beet genotypes characterized by different root yield. The above traits, evaluated on sixteen-day-old seedlings grown in hydroponics, were significantly correlated with root yield. Furthermore, under field conditions, the sugar beet genotype (ISCI 6) characterized by the highest root yield and therefore root elongation rate and sulfate uptake rate with respect to the lowest (ISCI 1), showed higher root length density (RLD) and leaf relative water content (RWC). The association of these morpho-physiological traits might be considered determinant of sugar beet productivity under conditions of water-nutritional stress.
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