Selection of S3 progenies of super sweet corn based on agronomic performance of topcrosses

Chiquito, Nathany R; Faria, Marcos V; Paiva, Elida Auxiliadora P; Gava, Emanuel; Zaluski, Welton L

doi:10.1590/s0102-0536-20210402

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Research • Hortic. Bras. 39 (4) • Oct-Dec 2021 • https://doi.org/10.1590/s0102-0536-20210402 copy

Selection of S3 progenies of super sweet corn based on agronomic performance of topcrosses

Seleção de progênies S3 de milho super doce com base no desempenho agronômico de topcrosses

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The aim of this study was to select S3 progenies of super sweet corn based on agronomic performance, evaluated in topcrosses with the narrow genetic base tester Honey Sweeter (Seminis®). The experiment was carried out in Guarapuava-PR. We evaluated 22 topcross hybrids and three checks, in two sowing times, in randomized blocks design with three replications. Six traits were evaluated: total yield of husked ears, commercial yield of husked ears, grain yield, grain length, ear diameter and total soluble solids content. Considering the set of evaluated traits, the topcrosses with progenies D2-07, D3-28, D4-53 and D5-24 were superior to the others; therefore, these progenies should continue in the inbreeding process and be evaluated in crosses with elite inbred lines with potential to generate competitive super sweet corn single hybrids.

Keywords:
Zea mays var. saccharata; sweet corn breeding; shrunken 2 (sh2)

Genotypes	YHE (t ha^-1)				YCE (t ha^-1)						GY (t ha^-1)
Genotypes	1^st sowing time		2^nd sowing time		1^st sowing time			2^nd sowing time			1^st sowing time		2^nd sowing time
D2-07 x HS	17.29	a	17.70	a	14.37	a	A	16.33	a	A	11.16	a	10.48	a
D2-15 x HS	13.18	b	15.98	b	8.87	b	A	12.00	b	A	8.20	b	9.54	a
D2-41 x HS	13.14	b	17.09	a	9.99	b	B	14.64	a	A	8.42	b	11.00	a
D2-58 x HS	13.96	b	16.82	a	10.63	b	B	15.08	a	A	9.03	b	10.40	a
D3-28 x HS	18.71	a	18.40	a	14.81	a	A	16.03	a	A	12.45	a	12.15	a
D3-39 x HS	13.75	b	18.04	a	10.30	b	B	14.64	a	A	8.02	b	11.97	a
D4-01 x HS	13.06	b	15.93	b	9.00	b	B	13.55	a	A	8.91	b	10.18	a
D4-08 x HS	15.18	a	15.18	b	10.32	b	A	11.11	b	A	10.16	a	10.21	a
D4-16 x HS	12.28	b	17.49	a	8.01	c	B	14.76	a	A	8.07	b	10.81	a
D4-20 x HS	12.03	b	15.06	b	7.56	c	B	11.66	b	A	7.76	b	10.02	a
D4-29 x HS	9.82	c	12.58	c	7.15	c	A	9.25	c	A	5.83	c	8.54	b
D4-31 x HS	14.05	b	17.98	a	10.80	b	B	15.82	a	A	9.03	b	12.18	a
D4-39 x HS	12.82	b	15.61	b	9.97	b	A	12.36	b	A	8.57	b	9.66	a
D4-53 x HS	16.46	a	18.60	a	12.97	a	B	16.29	a	A	1.08	a	11.97	a
D4-54 x HS	13.64	b	14.68	b	10.02	b	A	12.87	a	A	8.59	b	10.67	a
D5-11 x HS	13.59	b	16.68	a	8.77	b	B	14.12	a	A	8.31	b	11.49	a
D5-14 x HS	12.57	b	17.25	a	7.47	c	B	14.23	a	A	7.67	b	11.13	a
D5-24 x HS	15.78	a	18.30	a	10.97	b	B	16.52	a	A	9.80	a	11.50	a
D5-46 x HS	13.96	b	16.02	b	9.80	b	A	12.11	b	A	8.41	b	10.14	a
D5-51 x HS	13.88	b	18.77	a	9.57	b	B	15.93	a	A	9.36	b	12.69	a
D5-55 x HS	11.14	c	15.23	b	6.70	c	B	13.17	a	A	7.22	b	10.00	a
D5-57 x HS	13.77	b	15.89	b	10.45	b	A	12.92	a	A	8.62	b	10.75	a
Honey Sweeter	8.56	c	15.00	b	3.96	d	B	13.86	a	A	5.10	c	10.25	a
BR400	8.90	c	9.52	c	4.40	d	B	7.67	c	A	2.77	d	5.52	c
Super doce TecnoSeed	6.95	c	11.33	c	2.65	d	B	8.82	c	A	3.62	d	6.63	c
Average of genotypes	13.14	B	16.04 A		9.18 B			13.43 A			8.23	B	10.40	A
Average of TCH	13.82	a A	16.60a A		9.93 aA			13.88 a A			8.84	a A	10.79	a A
Average of checks	8.14	b	11.95b		3.67 bB			10.12 bA			3.83	b B	7.47	b
CV (%)	13.79		12.57		19.08			16.35			16.35		13.46

Genotypes	SS* (^oBrix)		ED (mm)						GL (mm)
Genotypes	Average of sowings		1^st Sowing time			2^nd Sowing time			1^st Sowing time			2^nd Sowing time
D2-07 x HS	13.9	b	54.0	a	A	50.8	b	B	13.39	a	A	12.01	b	B
D2-15 x HS	13.8	b	49.0	b	A	50.3	b	A	12.80	b	A	11.86	b	B
D2-41 x HS	13.4	b	50.9	b	A	50.4	b	A	12.53	b	A	12.47	a	A
D2-58 x HS	13.9	b	51.9	a	A	50.7	b	A	13.72	a	A	11.78	b	B
D3-28 x HS	13.8	b	53.9	a	A	49.5	b	B	13.74	a	A	11.98	b	B
D3-39 x HS	14.1	b	53.3	a	A	54.4	a	A	13.24	a	A	12.09	b	B
D4-01 x HS	14.7	b	45.7	c	A	47.3	c	A	12.78	b	A	11.67	b	B
D4-08 x HS	13.2	b	50.3	b	A	45.7	c	B	13.16	a	A	11.83	b	B
D4-16 x HS	15.2	b	48.9	b	A	46.7	c	A	12.35	b	A	11.03	b	B
D4-20 x HS	15.2	b	52.3	a	A	52.9	a	A	13.41	a	A	11.93	b	B
D4-29 x HS	14.9	b	49.4	b	A	50.2	b	A	12.79	b	A	12.21	a	A
D4-31 x HS	14.0	b	52.1	a	A	52.2	a	A	12.77	b	A	12.42	a	A
D4-39 x HS	14.1	b	50.2	b	A	48.3	c	A	13.14	a	A	11.04	b	B
D4-53 x HS	13.7	b	52.4	a	A	48.0	c	B	13.88	a	A	12.29	a	B
D4-54 x HS	14.6	b	52.1	a	A	49.2	b	A	13.73	a	A	11.91	b	B
D5-11 x HS	14.5	b	49.6	b	A	52.3	a	A	12.20	b	A	12.28	a	A
D5-14 x HS	12.3	b	51.7	a	A	48.3	c	B	12.76	b	A	11.58	b	B
D5-24 x HS	12.8	b	52.8	a	A	50.5	b	A	13.45	a	A	12.41	a	B
D5-46 x HS	13.5	b	53.7	a	A	50.7	b	A	13.27	a	A	11.65	b	B
D5-51 x HS	14.1	b	51.8	a	A	51.2	b	A	13.49	a	A	11.97	b	B
D5-55 x HS	13.8	b	51.1	b	A	49.0	b	A	13.62	a	A	12.48	a	B
D5-57 x HS	12.2	b	49.9	b	A	51.0	b	A	13.02	b	A	11.89	b	B
Honey Sweeter	13.5	b	53.6	a	A	53.9	a	A	13.88	a	A	13.22	a	A
BR400	12.3	b	43.3	c	A	41.3	d	A	10.71	c	A	9.09	c	B
Superdoce TecnoSeed	23.6	a	43.5	c	A	44.1	d	A	10.67	c	A	9.88	c	A
Average of genotypes	14.6		50.71		A	49.55		B	12.98		A	11.80		B
Average of TCH	13.9	b	51.24	a	A	49.98	a	A	13.15	a	A	11.94	a	B
Average of checks	16.4	a	46.82	b	A	46.43	b	A	11.76	b	A	10.73	b	B
CV (%)	7.66		4.16			3.32			3.29			5.26

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[TFN2] Means followed by the same letter, uppercase in lines and lowercase in columns, belong to the same group, by Scott & Knott grouping test at 5% probability. HS= Honey Sweeter. TCH= Topcross hybrids; 1^st sowing = on November 15, 2014; 2^nd sowing = on December 6, 2014.