TABLE 3.

ANOVA (F value) of the effects of heat stress in different stages on the concentration of endogenous hormones in maize varieties with different capacities for heat tolerance.

Source of variation	Variable
	ZT	ZR	SA	JA	GA3	GA4	ABA
Variety	26.32**	82.10**	3.41ns	34.47**	187.82**	41.88**	1250.05**
Temperature	124.44**	378.20**	1.47ns	86.62**	312.76**	56.75**	4815.57**
Stage	214.95**	3387.49**	237.50**	110.15**	369.05**4	158.51**	1316.52**
Variety × Temperature	31.34**	18.40**	111.86**	63.70**	20.43**4	19.81**	1060.96**
Variety × Stage	27.12**	175.13**	20.16**	118.57**	25.026**	28.61**	77.76**
Temperature × Stage	103.03**	308.33**	16.69**	70.36**	13.45**	4.37*	635.63**
Variety × Temperature × Stage	34.68**	61.63**	4.66*	227.58**	2.31ns	1.50ns	136.96**

ZT, ZR, SA, JA, GA₃, GA₄, and ABA represent the zeatin, zeatin riboside, salicylic acid, jasmonic acid, gibberellin acid₃, gibberellin acid₄, and abscisic acid, respectively. *Significant at P < 0.05 (n = 3); **Significant at P < 0.01 (n = 3); and ^nsnon-significant.