Journal of Zhejiang Agricultural University · 2002 · 13 citations · 0 references
Life SciencesPlant BiologyPlant SciencesPlant BiochemistryPlant PhysiologyStress PhysiologyDrought PhysiologyDrought Stress PhysiologyDrought ToleranceEthylene PhysiologyStress BiochemistryStress PhenotypingDrought StressDrought Stress EffectsLipoxygenase PathwayMembrane Permeability ChangesRelative Water ContentUnsaturated Fatty Acid ContentWater Stress PhysiologyWater Stress Tolerance
The seedlings of apricot ( Armeniaca Vulgaris Lam.) cv. and (drought resistant), and (drought sensitive) were subjected to drought stress in pots under natural conditions for 13 days. The effects of drought stress on the relative water content (RWC), fatty acid composition of membrane lipid, ethylene release rate and lipoxygenase (LOX) activity were studied. With the stress continuing, RWC and index of unsaturated fatty acid (IUFA) decreased, contrary to the increase of the membrane permeability. The ethylene release rate and LOX activity increased at first, then decreased. These targets trend to recovere to different extents after rewatering for 3 days. The drought resistant cultivar of Bingjianali and Dayakeximixi showed higher RWC, but lower membrane permeability and ethylene ralease rate and LOX activity than the drought sensitive Hongyuxing apricot.