|Author:||Sadeghian, S. Y. ; Mohammadian, R. ; Taleghani, D. F. ; Abdollahian-Noghabi, M.|
|Book Group Author:||NA|
Field experiments were conducted in Iran, in 1998, to evaluate the performance of 12 sugarbeet (Beta vulgaris var. saccharifera) lines for water use efficiency (WUE), root yield, sugar content, and sugar and white sugar yield, sugar purity with adequate water and under drought stress. Water stress was initiated at the six-leaf stage and maintained throughout the growing season. Biomass, root dry weight and the ratio of roots/above ground matter were determined. The relationship between WUE with root yield (RY), sugar yield (SY), sugar purity, root dry weight, biomass and impurities such as sodium (Na), potassium (K) and α-amino nitrogen (α-N) was also determined. Significant differences were found between lines for contents of Na, K, α-N, and sugar purity and molasses sugar (MS) yield under well-watered condition and for root yield, sugar yield, sugar content, K content, α-N content, WUE, root dry weight and biomass. Root yield and sugar yield exhibited large differential genotypic responses to drought stress. Genotypes 12, 1 and 4 demonstrated high sugar yield as well as high WUE under stress condition compared to the other genotypes. In the stress trial, close associations between WUE with root yield, sugar yield, root dry weight and biomass was observed. Water stress increased the content of impurities such as sodium (Na), potassium (K) and α-amino nitrogen (α-N) which could affect the quality of beet processing in the factory. Under stress conditions, drought tolerant lines contained lower concentration of sodium (Na) than the susceptible ones.
|Pages:||1236 - 1241|
|Journal:||Pakistan Journal of Biological Sciences|
amino nitrogen, beet molasses, biomass, chemicalcomposition, crop quality, crop yield, drought resistance, geneticvariation, genotypes, plant composition, plant water relations,potassium, roots, sodium, sugar content, sugar yield, sugarbeet, waterstress, water use efficiency, white sugar, yield components, Iran, Betavulgaris var. saccharifera, Beta vulgaris, Beta, Chenopodiaceae,Caryophyllales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, West Asia, Asia, Middle East, Developing Countries,Threshold Countries, chemical constituents of plants, drought tolerance,genetic variability, genotypic variability, genotypic variation, FieldCrops (FF005) (New March 2000), Plant Breeding and Genetics (FF020),Plant Water Relations (FF062), Plant Production (FF100), EnvironmentalTolerance of Plants (FF900), Sugar and Sugar Products (QQ020), FoodComposition and Quality (QQ500)