Table 3.

Effect of source-sink modulation on transpiration (E), stomatal conductance (g_s), net photosynthesis (Pn) and chlorophyll content (SPAD) measured on six leaves per vine in Sangiovese.

Treatment‡	E (mmol m-2 s-1)	gs (mol m-2 s-1)	Pn (μmol m-2 s-1)	SPAD
3L	8.59	0.368	15.1	40.9
12L	8.86	0.345	13.8	38.0
Sig.(t-test)+	ns	ns	∗∗	∗

Data are means of four plants. ^‡3L: plants with three leaves per cluster; 12L: plants with 12 leaves per cluster. ^+∗,^∗∗, and ns indicate statistical significance at P = 0.05, 0.001, and not significant, respectively.