Table 4. Correlations of stomatal conductance (g_s) with net photosynthesis rate (P_N) and transpiration rate (T_r) among six genotypes.

The measurements were conducted with six genotypes during 9:30–11:00 at each measurement day. WW, well-watered; DS, drought stress; LRH, lower relative air humidity; MRH, moderate relative air humidity; HRH, higher relative air humidity. The daily average relative air humidity of LRH, MRH and HRH were 16.4%, 25.9% and 3 7.8% respectively.

Group	WW		DS
	gs-PN	gs-Tr	gs-PN	gs-Tr
LRH	0.9460**	0.8968**	0.9663**	0.9820**
MRH	0.9100**	0.9376**	0.9096**	0.9837**
HRH	0.9547**	0.6741**	0.8222**	0.9491**

Note:

^**Significant difference at p < 0.01.