Comparison of three tester parents in evaluating popcorn families derived from IAC-125

Miotto, Acácio Antonio; Pinto, Ronald José Barth; Scapim, Carlos Alberto; Matias Junior, José Lidércio; Coan, Marlon Mathias Dacal; Silva, Hingrid Ariane da

doi:10.5935/1806-6690.20160068

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Crop Science • Rev. Ciênc. Agron. 47 (03) • Jul-Sep 2016 • https://doi.org/10.5935/1806-6690.20160068 copy

Comparison of three tester parents in evaluating popcorn families derived from IAC-125

Comparação de três testadores na avaliação de famílias de milho pipoca derivadas de IAC-125

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Thirty-eight S₃ families obtained by selfing from IAC-125 popcorn hybrid were evaluated by three different topcross tester parents: an inbred line P_3.3- S₇ generation taken from popcorn population CMS-42, an open-pollinated variety BRS Angela and the commercial three-way hybrid Jade. Manual crossings were performed according to a partial diallel mating design. Topcross hybrids were evaluated in individual experiments for each tester carried out in randomized block designs with three replications in two locations (Maringá-Paraná and Sabáudia-Paraná). The results for grain yield and popping expansion were gathered in a combined analysis. Estimates of general and specific combining ability were obtained according to Griffing's methodology (1956), adapted by Geraldi and Miranda Filho (1988). The hybrid Jade was considered the most appropriate tester because it discriminated the evaluated families well for both grain yield and popping expansion according to Fasoulas index of differentiation. Families F₄, F₇, F₁₆ and F₃₁ are the most promising due to their high general combining ability for both traits as well their performance regardless of the effect of locations.

Key words:
Topcross; Popping expansion; General combining ability

Mean Squares
SV	DF	P_3.3		Angela		Jade
SV	DF	GY	PE	GY	PE	GY	PE
Blocks/Locations	4	440,051.00	9.88	262,310.00	48,471.00	480,659.00	5.80
Treatment (T)	39	1,240,722.00^ns	21.70^ns	1234,613.00^ , * F test significant at probability 1% and 5%, respectively	39.16^ns	1485,227.00^ns	54.58^ns
Locations (L)	1	888,653.00^ns	473,316.00^ns	174,043.00^ns	104,491.00^ns	1,623,450.00^ns	48.57^ns
T x L	39	877,485^ , * F test significant at probability 1% and 5%, respectively	15.99^ , * F test significant at probability 1% and 5%, respectively	552,270.00^ns	25.49^ , * F test significant at probability 1% and 5%, respectively	1,010,140.00^ , * F test significant at probability 1% and 5%, respectively	42.26^ , * F test significant at probability 1% and 5%, respectively
Error	156	213,926.00	5.86	391,121.00	5.76	344,941.00	8.26
Jade Average		2,821.00	28.78	2,968.00	28.89	3,146.00	27.89
IAC-125 Average		2,957.00	31.34	2,890.00	31.67	3,285.00	28.78
General mean		3,354.00	29.21	3,658.00	27.03	3,477.00	27.14
CV%		13.79	8.29	17.10	8.88	16.89	10.59

Source of variation^† † General combining ability (GCA), Specific combining ability (SCA),	Mean squares
	DF	GY	PE
Treatments	113	1,379,422.94^ , * F test significant at probability 1% and 5%, respectively	44.52^ , * F test significant at probability 1% and 5%, respectively
GCA Testers	2	5,926,151.22*	367.43^ns
GCA Families	37	2,371,567.99^ , * F test significant at probability 1% and 5%, respectively	60.16^ns
SCA	74	760,465.87^ns	27.98^ns
Locations	1	1,153,989.80^ns	416.85^ , * F test significant at probability 1% and 5%, respectively
Treatments x Locations	113	767,455.70^ , * F test significant at probability 1% and 5%, respectively	28.34^ , * F test significant at probability 1% and 5%, respectively
GCA Testers x Locations	2	258,423.41^ns	44.48^ , * F test significant at probability 1% and 5%, respectively
GCA Families x Locations	37	967,022.26^ , * F test significant at probability 1% and 5%, respectively	34.85^ , * F test significant at probability 1% and 5%, respectively
SCA x Locations	74	681,430.06^ , * F test significant at probability 1% and 5%, respectively	24.65^ , * F test significant at probability 1% and 5%, respectively
Error	468	316,663.00	6.62
General mean		3,522.00	27.70

S₃ families	Estimates of GCA effects (ĝ_j)
	GY		PE
	Maringá	Sabáudia	Maringá	Sabáudia
F₁	-25	-661	2.63	-0.10
F₂	-841	-46	-1.07	-2.55
F₃	-113	53	0.26	-0.62
F₄	134	173	1.52	2.56
F₅	38	90	0.04	1.08
F₆	-55	177	-0.85	2.34
F₇	254	47	2.33	0.93
F₈	811	585	-6.48	-1.36
F₉	1,178	243	-1.37	-0.92
F₁₀	-55	668	1.81	-2.40
F₁₁	-197	-30	0.48	0.63
F₁₂	-187	429	-3.74	1.75
F₁₃	-188	-478	1.67	3.60
F₁₄	325	-205	0.93	-1.44
F₁₅	572	-75	-0.78	-2.18
F₁₆	489	398	0.11	2.08
F₁₇	411	-155	0.11	-0.40
F₁₈	-229	-745	2.48	-1.59
F₁₉	-422	310	-3.89	0.19
F₂₀	839	-113	-2.55	-1.96
F₂₁	-651	-253	3.67	3.30
F₂₂	618	383	1.3	-0.77
F₂₃	453	322	-2,55	-0.62
F₂₄	-295	-196	2.78	1.97
F₂₅	-78	19	0.34	-1.96
F₂₆	254	55	-1.15	0.49
F₂₇	297	-442	-0.04	-4.33
F₂₈	2	-19	-4.48	1.00
F₂₉	145	82	-1.59	-2.92
F₃₀	-313	79	2.11	-4.48
F₃₁	396	638	0.56	1.6
F₃₂	-6	-92	0.11	2.97
F₃₃	-105	417	-1.14	-3.88
F₃₄	-961	-422	3.59	4.41
F₃₅	-740	-536	2.85	0.26
F₃₆	-610	-93	2.34	3.75
F₃₇	-969	-574	-1.37	-0.03
F₃₈	-182	-32	-0.92	-0.40
SD (ĝ_i)	187	182	0.76	0.92
SD (ĝ_i-ĝ_i')	269	261	1.09	1.32

S₃ families	GCA		P_3.3		Angela		Jade
S₃ families	GY	PE	GY	PE	GY	PE	GY	PE
Maringá
F₄	15º	3º	14º	27º	30º	10º	11º	9º
F₇	13º	1º	18º	14º	19º	18º	6º	1º
F₁₆	6º	20º	5º	17º	5º	24º	17º	23º
F₃₁	4º	15º	10º	3º	9º	23º	9º	32º
Sabáudia
F₄	12º	3º	2º	26º	38º	15º	13º	4º
F₇	18º	10º	16º	4º	30º	13º	8º	33º
F₁₆	6º	8º	18º	18º	6º	20º	9º	13º
F₃₁	7º	11º	7º	15º	3º	22º	3º	11º

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