Abstract: Abstract：Seven rootstock graftings and Cabernet Sauvignon grape own-root seedlings were treated
with pot waterlogging to study the effects of waterlogging stress on the growth，leaf photosynthetic
characteristics and root physiological indexes. Based on the principle component analysis and cluster
analysis，the waterlogging-tolerance of these varieties were comprehensively evaluated. The results
showed that，compared with control，the plant growth and photosynthetic capacity obviously declined
under waterlogging stress. The root was more seriously affected than leaf，expressed by root dry weight，
root/shoot and root activity were decreased，while relative membrane permeability（RMP）in roots was
increased，CS/SO4，CS/101-14M and CS/5BB were less influenced by waterlogging stress，while own-root
seedlings was mostly influenced；Besides，the photosynthetic capacity，fluorescence parameters and
chlorophyll contents of scion were influnced by rootstocks. Among all the treaments，Cabernet Sauvignon
grape own-root seedling was the weakest in waterlogging stress，the order of resistance ability of different
rootstock combinations from best to bad was CS/SO4 > CS/101-14M > CS/5BB > CS/3309C > CS/Beta >
CS/140Ru > CS/1103P.

Key words: grape, rootstock, waterlogging stress, physiological response, principle component analysis