中文摘要：

利用自制木箱研究了1/2分区灌溉对嫁接在3309C、420A和110R砧木上的葡萄品种玛瓦斯亚（Vitis vinifera ‘Malvasia’）的光合作用、光合色素以及叶绿素荧光参数的影响.结果表明,分区灌溉使嫁接植株的Chl.a﹑Chl.b和Car.含量降低,但交替灌溉的降幅较小,固定灌溉的降幅则较大,砧木间差异也较大;交替灌溉显著降低了Tr和Gs,但Pn降幅较小,因此单叶水分利用效率显著提高.固定灌溉使3种砧木植株的Pn、Tr和Gs都显著降低,其中以M/3309C降幅较大,M/110R较小.3种组合在正常灌溉和交替灌溉条件下荧光参数有所下降,但彼此差异不显著,而固定灌溉使Fv/Fo 、Fv/Fm和ФPSⅡ显著降低,其中M/3309C分别下降了32.1%、13.5%和25.7%,M/420A分别下降了26.4%、12.3%和23.7%,M/110R分别下降了19.5%、5.9%和15.4%,砧木间差异显著.

英文摘要：

　Effects of partial rootzone drying on photosynthetic pigment, photosynthesis and chlorophyll fluorescence of the grape cuhivar‘Malvasia’grafted on different rootstocks were studied by simulating soil boxes with three treatments, controlled alternating irrigation for half of rootzone（AI）,controlled fixed irrigation for half of rootzone（FI）,and conventional irrigation for whole root zone（CK）.The result showed that the contents of Chl. a, Chl. b and Car. of M/420A, M/3309C and M/110R decreased slightly under AI than under FI. Different decreasing extents of the three pigments contents were also found in different cuhivar/rootstocks with two treatments. Pn of M/420A, M/3309C, and M/110R decreased slightly while Tr and Gs decreased significantly with the amount from 41.1% to 56. 1% under AI, which increased the water use efficiency（WUE）significantly. WUE of M/3309C was 1.71 times of CK, while that of M/420A and M/110R were 1.36 and 1.66 times of CK respectively. Pn, Tr and Gs of three combinations decreased significantly under FI, with the amounts of M/3309C at 54.9%, 57%, and 80.4%, M/110R at 36. 3%, 51.3%, and 60. 5% respectively. WUE of M/420A, M/3309C and M/110R were 1.18, 1.05 and 1.31 times of CK respectively. No great differences was found in the chlorophyll fluorescence parameters of M/420A, M/3309C and M/110R in CK and AI when it comes to be obvious under FI. The Fv/Fo, Fv/Fm andΦPSⅡof 3 combinations decreased significantly which the M/3309C decreased by 32. 1%, 13.5% and 25.7%, respectively, the M/ 420A decreased by 26. 4%, 12.3% and 23.7%, respectively, the M/110R decreased by 19.5%, 5.9% and 15.4%, respectively, which suggested that different effects on the same cultivar were significant among different rootstocks.