|Author:||Qi, Wei ; Guan, XueQiang ; Li, EnMao ; Zhai, Heng ; Wang, XiaoFang ; Du, YuanPeng|
|Book Group Author:||NA|
To lay a biological foundation for rootstocks and alternate irrigation (AI) popularization, the effects of partial root zone drying on the growth of grape cv. Malvasia, grafted on different rootstocks, were investigated in field experiments conducted in Shandong, China. The biological effects of 112 divided root irrigation on 3 combinations, i.e. Malvasia/420A, Malvasia/3309C and Malvasia/110R, were studied using wood-boxed plants. All plants were separated into 3 groups for the different irrigation strategies. Mass growth of new roots in the alternately irrigated plants was remarkably promoted by approximately 7.8-22.2% higher than the well-watered ones. However, new shoot growth, especially the internode was reduced by AI. The average root-shoot ratio of the 3 combinations was increased from 1.1 to 1.46. New root growth and internode length were decreased by fixed partial root zone irrigation (FI) at different amounts, M/3309C at 37.9 and 36.9% and M/110R at 18.4 and 22.5%, respectively. The total biomass of the 3 combinations under FI decreased at the rate of 19.2-34.3% compared to the well-watered ones. Water stress adaptation of grapes mainly depend on rootstock. The 110R rootstock was more efficient than 3309C and 420A in water stress adaptation. PRD-AI benefited root growth, and thus improved the drought resistance ability of grapes.
|Pages:||567 - 572|
|Journal:||Agricultural Sciences in China|
drought resistance, grafting, grapes, growth, irrigation,plant water relations, roots, rootstocks, stress, stress factors, stressresponse, water stress, China, Shandong, Vitis, Vitis vinifera, Vitis,Vitidaceae, Rhamnales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, East Asia, Asia, Developing Countries, Northern China,China, drought tolerance, Shantung, Vitaceae, watering, HorticulturalCrops (FF003) (New March 2000), Plant Physiology and Biochemistry(FF060), Plant Water Relations (FF062), Environmental Tolerance ofPlants (FF900), Soil Water Management (Irrigation and Drainage) (JJ800)(Revised June 2002) [formerly Soil Water Management]