. 2018 Nov 22;8(12):274. doi: 10.3390/agronomy8120274

Table 3.

Mean sum of squares from combined analysis of variance of 40 drought tolerant maize hybrids evaluated under combined drought and heat stress in 2013, 2014, and 2015 at Kadawa in Nigeria.

Source	DF	Grain Yield (kg/ha)	Silking (day)	Plant Height (cm)	Ear Height (cm)	Ear per Plant (No.)	Ear Aspect (1–5) ^a	Plant Aspect (1–5) ^b	Leaf Death1 (1–10) ^c1	Leaf Death2 (1–10) ^c2	Tassel Blast (1–5) ^d	Barren Plant (1–5) ^e
Year	2	95,869,279 ^***	4009 ^***	26727 ^***	6199 ^***	12.53 ^***	12.58 ^***	12.57 ^***	46.88 ^***	71.68 ^***	2.64 ^***	9.06 ^***
Block (Rep^*Year)	69	4,517,557 ^***	35 ^***	1121 ^***	537 ^***	0.13 ^***	1.10 ^***	0.34 ^***	0.62 ^***	1.88 ^***	0.29 ^***	0.28 ^***
Genotype	39	2,709,746.6 ^***	26 ^***	1118 ^***	571 ^***	0.14 ^***	0.74 ^***	0.55 ^***	0.88 ^***	1.64 ^**	0.45 ^***	0.22 ^**
Genotype x Year	77	119,982,477 ^**	11 ^**	306	169 ^*	0.06 ^**	0.39 ^*	0.33 ^***	0.23	1.23 ^**	0.37 ^***	0.15
Residual	166	820,563	8	240	113	0.03	0.25	0.17	0.22	0.73	0.14	0.11
Repeatability		0.48	0.49	0.73	0.71	0.64	0.52	0.48	0.63	0.38	0.13	0.40

^{*, **, ***}

Significant at 0.5, 0.01 and 0.001 probability levels, respectively; DF = degree of freedom;

Ear aspect, scored on a scale of 1–5, where 1 = uniform ear filled and grain color and 5 = poor ear filling with multiple grain colors;

Plant aspect, a visual score on a scale of 1–5, where 1 = good phenotypic appeal and 5 = poor phenotypic appeal;

^c1

First leaf senescence scored on a scale of 1–10, where 1 = 10% leaf death and 10 = 100% leaf death;

^c2

Second leaf senescence scored on a scale of 1–10, where 1 = 10% leaf death and 10 = 100% leaf death;

Tassel blast scored on a scale on a scale of 1–5, where 1 = few tassel blast and 5 = dry tassel;

Barren plants scored on a scale of 1–5, where 1 = few barren plants and 5 = all plants without ears.