(IMPACT OF WATER STRESS ON GROWTH AND CARBOHYDRATE METABOLISM OF SUNFLOWER PLANTS

摘要

Impact of water stress on soil-grown potted Helianthus annuus L. Var. Peredovic plants have been investigated at three critical reproductive stages of plant, viz., flower initiation (FI), seed setting (SS) and seed maturation (SM). Emphasis has been placed on reproductive stage because sunflower (Helianthus) is an oil-seed crop. Water stress has been expressed as water potential (ψ) in-MPa. The investigations have been conducted on growth and certain basic metabolic parameters such as sugars, lipids, organic acids and amino acids. The stress period has been confined to the stages of plant development concerned primarily with the grand period of fat deposition which lasts about 10 days after anthesis.