. 2020 Apr 28;8:e8927. doi: 10.7717/peerj.8927

Table 3. Path analysis of transpiration rate with stomatal conductance and metorological factors during diurnal dynamic variation.

The measurement dates and diurnal meteorological conditions are shown in Fig. 2. g_s, stomatal conductance; T, air temperature; RH, relative air humidity; VPD, vapor pressure deficit; PAR, photosynthetically active radiation; WW, soil well-watered; DS, soil drought stress; LRH, low relative humidity; MRH, moderate relative humidity; HRH, high relative humidity. The daily average relative air humidity of LRH, MRH and HRH were 15.4%, 28.3% and 36.7% respectively.

Regimes	Independent variable	Direct path coefficient	Indirect path coefficient					Simple correlation coefficient
Regimes	Independent variable	Direct path coefficient	g_s	T	RH	VPD	PAR	Simple correlation coefficient
WW	g_s	0.7346**		0.9623	0.3766	−1.1614	−0.1552	0.7569**
LRH	T	3.4006**	0.2079		0.8009	−3.4695	−0.6801	0.2598*
	RH	−0.9416	−0.2938	−2.8927		3.2816	0.5386	−0.3079**
	VPD	−3.5288*	0.2418	3.3435	0.8756		−0.6536	0.2785**
	PAR	−0.7107**	0.1604	3.254	0.7135	−3.2454		0.1718
DS	g_s	0.8225**		0.0305	−0.0303	−0.1454	0.0678	0.7451**
LRH	T	−0.1296	−0.1937		−0.5435	1.071	−0.2296	−0.0253
	RH	0.6381	−0.039	0.1103		−1.0134	0.182	−0.122
	VPD	1.0891	−0.1098	−0.1274	−0.5938		−0.2206	0.0376
	PAR	−0.24	−0.2323	−0.1239	−0.4838	1.0013		−0.0787
WW	g_s	0.7465**		0.0179	0.1135	−0.1575	0.0687	0.7890**
MRH	T	0.0703	0.1906		0.5432	−0.6404	0.2707	0.4345**
	RH	−0.6143*	−0.1379	−0.0621		0.6215	−0.2601	−0.4529**
	VPD	−0.6547	0.1796	0.0687	0.5832		0.2779	0.4547**
	PAR	0.3045*	0.1684	0.0625	0.5247	−0.5974		0.4627**
DS	g_s	0.7503**		0.0547	0.0912	−0.1643	0.0373	0.7692**
MRH	T	0.675	0.0608		0.6819	−1.3795	0.2062	0.2444*
	RH	−0.7566**	−0.0904	−0.6084		1.3344	−0.2024	−0.3234**
	VPD	−1.4017	0.0879	0.6643	0.7203		0.2118	0.2826**
	PAR	0.2361	0.1186	0.5894	0.6485	−1.2574		0.3353**
WW	g_s	0.5982**		0.2367	0.2545	−0.9967	−0.0338	0.0589
HRH	T	−0.3155	−0.4488		−0.336	1.329	0.0403	0.2690*
	RH	0.3658	0.4163	0.2899		−1.2945	−0.0383	−0.2609*
	VPD	1.347	−0.4427	−0.3113	−0.3515		0.0373	0.2787**
	PAR	0.0635	−0.3186	−0.2003	−0.2205	0.7912		0.1153
DS	g_s	0.5807**		1.0599	0.5937	−1.8809	−0.2289	0.1245
HRH	T	−1.9589	−0.3142		−1.0561	3.4108	0.3472	0.4289**
	RH	1.183	0.2914	1.7487		−3.3469	−0.2686	−0.3923**
	VPD	3.4856*	−0.3133	−1.9169	−1.136		0.302	0.4214**
	PAR	0.5162**	−0.2574	−1.3176	−0.6155	2.0388		0.3645**

Notes:

Significant difference at p < 0.05.

^**

Significant difference at p < 0.01.