Abstract
With the characteristics of great ornamental value and strong adaptability, Abelia grandiflora 'Francis Mason' is widely used in the garden. For the shortage of water in some garden and landscape spaces, the effect of water stress on the physiology of Abelia grandiflora 'Francis Mason' was tested to ascertain the optimum irrigation of it. The results showed that water flood suppressed the growth of the plants seriously after treated for 58 days, which embodied in the dramatic decline of Fv /Fm, Fv'/Fm', ETR, qP, chlorophyll and net photosynthetic rate. Treating with drought for 50 days was proved to be beneficial for the growth of the plants, for the Fv /Fm, Fv'/Fm', ETR, qP, chlorophyll were increased. But these fluorescence parameters were decreased 60 days later and the plants were dead in 90-days drought stress. Water treatment had the most significant impact on the plants whlie mild drought stress a little.
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