. 2020 Oct 22;11:533046. doi: 10.3389/fpls.2020.533046

TABLE 4.

Correlation coefficients of endogenous hormones and ear phenotype in maize varieties with different capacities for heat tolerance.

		T						S
		Length of the young ear	Length of the undeveloped part	Diameter of the young ear	Total number of florets	Floret fertilization rate	Grain abortion rate	Length of the young ear	Length of the undeveloped part	Diameter of the young ear	Total number of florets	Floret fertilization rate	Grain abortion rate
ZT	V9	0.96**	−0.95**	0.95**	0.91*	0.93**	−0.98**	0.91*	−0.86*	0.92**	0.84*	0.89*	−0.87*
	V12	0.92**	−0.94**	0.95**	0.68^ns	0.93**	−0.93**	0.73^ns	−0.66^ns	0.65^ns	0.42^ns	0.68^ns	−0.69^ns
	VT	0.88*	−0.97**	0.94**	0.85*	0.98**	−0.98**	0.91*	−0.86*	0.86*	0.70^ns	0.85*	−0.83*
ZR	V9	0.96**	−0.95**	0.97**	0.95**	0.92*	−0.97**	1.00**	−0.91*	0.99**	0.90*	0.98**	−0.99**
	V12	−0.79^ns	0.89*	−0.80^ns	−0.62^ns	−0.84*	0.83*	1.00**	−0.97**	0.98**	0.88*	0.99**	−1.00**
	VT	0.88*	−0.96**	0.88*	0.75^ns	0.94**	−0.94**	0.60^ns	−0.76^ns	0.62^ns	0.86*	0.73^ns	−0.76^ns
SA	V9	−0.91*	0.90*	−0.96**	−0.98**	−0.85*	0.87*	0.92**	−0.80^ns	0.91*	0.86*	0.91*	−0.88*
	V12	−0.71^ns	0.80^ns	−0.70^ns	−0.57^ns	−0.75^ns	0.74^ns	0.98**	−0.94**	0.94**	0.78^ns	0.96**	−0.97**
	VT	−0.85*	0.84*	−0.83*	−0.60^ns	−0.87*	0.88*	0.90*	−0.93**	0.96**	0.84*	0.96**	−0.95**
JA	V9	−0.83*	0.89*	−0.85*	−0.79^ns	−0.85*	0.85*	0.83*	−0.77^ns	0.83*	0.65^ns	0.85*	−0.71^ns
	V12	−0.99**	0.99**	−0.99**	−0.79^ns	−0.99**	0.99**	1.00**	−0.97**	0.99**	0.83*	1.00**	−1.00**
	VT	0.86*	−0.96**	0.99**	0.86**	0.97**	−0.97**	−0.95**	0.91*	−0.85*	−0.83*	−0.89*	0.89*
GA₃	V9	−0.98**	0.99**	−0.98**	−0.95**	−0.94**	0.97**	−0.87*	0.87*	−0.89*	−0.95**	−0.81^ns	0.94**
	V12	−0.97**	0.95**	−0.98**	−0.68^ns	−0.98**	0.98**	−0.94**	0.98**	−0.95**	−0.95**	−0.95**	0.96**
	VT	−0.93**	0.99**	−0.95**	−0.70^ns	−0.97**	0.97**	−0.85*	0.93**	−0.95**	−0.85*	−0.95**	0.95**
GA₄	V9	−0.99**	0.97**	−0.98**	−0.98**	−0.95**	0.97**	−0.61^ns	0.77^ns	−0.62^ns	−0.82*	−0.50^ns	0.69^ns
	V12	−0.95**	0.98**	−0.96**	−0.74^ns	−0.96**	0.96**	−0.74^ns	0.70^ns	−0.72^ns	−0.46^ns	−0.78^ns	0.74^ns
	VT	0.89*	−0.78^ns	0.83*	0.94**	0.75^ns	−0.77^ns	−0.33^ns	0.53^ns	−0.58^ns	−0.53^ns	−0.57^ns	0.59^ns
ABA	V9	−0.96**	0.95**	−0.95**	−0.91**	−0.90*	1.00**	−0.98**	0.96**	−0.97**	−0.96**	−0.95**	0.99**
	V12	−1.00**	0.99**	−0.99**	−0.78^ns	−1.00**	−1.00**	−1.00**	0.98**	−0.99**	−0.86*	−1.00**	1.00**
	VT	−0.91*	0.98**	−0.96**	−0.77^ns	−0.99**	0.99**	−0.96**	0.10**	−0.96**	−0.93**	−1.00**	1.00**

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. T and S represent the heat-tolerant variety and heat-sensitive variety, respectively. L represents the natural environment and H represents the heat-stressed environment. V9, V12, and VT represent the 9^th leaf, 12th leaf, and tasseling stages. *Significant at P < 0.05 (n = 3); **Significant at P < 0.01 (n = 3); and ^nsnon-significant.