. 2021 Jun 29;12:687622. doi: 10.3389/fpls.2021.687622

Table 3.

Summary of the analysis of variance (ANOVA) for nitrogen fertilization (N) and genotypic (G) effects (upper part of the table), mean values for GY and yield components within each nitrogen fertilizer level (middle part), and mean genotypic values for GY (lower part).

Traits	2017/18			2018/19
	Level of significance (ANOVA)
	N	G	N × G	N	G	N × G
GY	0.008^∗∗	0.000^∗∗∗	0.123^ns	0.679^ns	0.000^∗∗∗	0.933^ns
TGW	0.551^ns	0.000^∗∗∗	0.221^ns	0.198^ns	0.000^∗∗∗	0.284^ns
BDW	0.941^ns	0.056^ns	0.078^ns	0.770^ns	0.735^ns	0.135^ns
SM	0.897^ns	0.013^∗	0.113^ns	0.752^ns	0.000^∗∗∗	0.892^ns
GS	0.048^∗	0.000^∗∗∗	0.879^ns	0.827^ns	0.006^∗∗	0.170^ns
	Significance of the mean ± standard deviation of nitrogen fertilizer levels
	N50	N100	N130	N50	N100	N130
GY	7.41 ± 0.87b	8.35 ± 0.89a	8.09 ± 0.98a	2.39 ± 0.66a	2.46 ± 0.8a	2.72 ± 0.73a
TGW	35.21 ± 3.27a	34.78 ± 2.97a	34.89 ± 3.2a	26.97 ± 4.39a	28.26 ± 4.51a	29.60 ± 4.08a
BDW	1.25 ± 0.28a	1.35 ± 0.29a	1.34 ± 0.3a	0.56 ± 0.13a	0.57 ± 0.14a	0.59 ± 0.15a
SM	458.58 ± 69.99a	464.47 ± 92.44a	453.33 ± 74.34a	291.31 ± 79.78a	301.36 ± 90.64a	321.81 ± 78.19a
GS	45.89 ± 7.67a	43.22 ± 6.48a	45.28 ± 6.53a	21.87 ± 6.28a	23.16 ± 5.64a	22.31 ± 6.84a
Genotype	Significance of genotypes for GY (HSD; mean ± standard deviation)
Genotype	N50	N100	N130	Genotype	General
Bologna	6.56 ± 0.41cd	6.82 ± 0.36c	6.44 ± 0.51d	Bologna	2.79 ± 1.02ab
Chambo	7.13 ± 0.88abcd	8.44 ± 0.20ab	9.15 ± 0.50ab	Chambo	2.89 ± 0.51ab
Soberbio	7.71 ± 0.80abc	8.33 ± 0.65ab	8.30 ± 0.41abc	Soberbio	3.15 ± 0.65a
Henrik	7.73 ± 0.29abc	8.66 ± 0.33ab	8.79 ± 0.24ab	Henrik	2.92 ± 0.72ab
Benchmark	8.09 ± 0.16ab	8.54 ± 0.50ab	8.74 ± 0.45ab	Benchmark	2.00 ± 0.44b
RGT Reform	8.12 ± 0.61ab	9.17 ± 0.39ab	8.76 ± 0.02ab	RGT Reform	2.28 ± 0.62ab
JB Diego	8.31 ± 0.33ab	9.25 ± 0.20ab	8.37 ± 0.63ab	JB Diego	2.17 ± 0.66ab
KWS Lilli	7.03 ± 0.33bcd	8.41 ± 0.03ab	8.01 ± 0.26abc	Bennington	2.33 ± 0.41ab
Hondia	6.89 ± 0.46bcd	8.06 ± 0.43bc	7.46 ± 0.81bcd	Hondia	1.92 ± 0.59b
Julius	6.97 ± 0.39bcd	8.11 ± 0.46b	7.90 ± 0.54abcd	Julius	2.18 ± 0.65ab
CH-Nara	5.89 ± 0.21d	6.85 ± 0.39c	6.52 ± 0.18cd	CH-Nara	2.55 ± 0.57ab
KWS Siskin	8.48 ± 0.45a	9.55 ± 0.69a	9.23 ± 0.49a	KWS Siskin	2.94 ± 0.67ab

GY, grain yield (Mg ha⁻¹); TGW, thousand grain weight; BDW, biomass dry weight; SM, spikes m⁻²; GS, grains spike⁻1. ^*For the 2018/19 season, genotypic means of GY were only calculated for all three fertilizer levels combined because the nitrogen fertilizer treatments had significant effect. Means across nitrogen levels (in the row) and across genotypes (in the column), followed by different letters, are significantly different (p < 0.05) according to the Tukey’s honestly significant difference (HSD) test. Levels of significance for the ANOVA: ns, not significant; ^∗p < 0.05; ^∗∗p < 0.01; ^∗∗∗p < 0.001.