|Author:||Klamkowski, K. ; Treder, W.|
|Book Group Author:||NA|
In the present study the transpiration rate and changes in the diameter of the leaders of apple cv. Ligol trees grafted on various rootstocks (P 16, P 22 and M.9), as influenced by different soil water regimes, were examined. The required soil moisture was obtained by 2 types of emitters: 80-100% of field water capacity (FWC) for plants irrigated with 4-litre emitters; and 40-50% FWC for water stressed plants irrigated with 2-litre emitters. The results showed that both the parameters depended on the rootstock and soil water content. The average transpiration rate of stressed plants was lower by 66% compared to well-watered plants. The average maximum daily shrinkage (change in diametera) of the leader plant grown in 80-100% FWC was 0.09 mm, while that of stressed plants reached 0.23 mm. The most resistant to soil water deficit was M.9 and the most sensitive was P 16. Despite considerable daily changes of water status in the tissues, P 22 rootstock seems to be more suitable to soils with a low content of water than P 16.
|Pages:||31 - 39|
|Journal:||Journal of Fruit and Ornamental Plant Research|
apples, cultivars, diameter, drought, drought resistance,genetic variation, irrigation, rootstocks, soil water, transpiration,varietal resistance, water stress, Malus, Malus pumila, Rosaceae,Rosales, dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes,Malus, cultivated varieties, drought tolerance, genetic variability,genotypic variability, genotypic variation, soil moisture, watering,Horticultural Crops (FF003) (New March 2000), Plant Breeding andGenetics (FF020), Plant Water Relations (FF062), Plant Production(FF100), Environmental Tolerance of Plants (FF900), Soil WaterManagement (Irrigation and Drainage) (JJ800) (Revised June 2002)[formerly Soil Water Management]