Adaptability and stability of canola hybrids in different sowing dates1

Lima, Luiz Henrique da Silva; Braccini, Alessandro Lucca; Scapim, Carlos Alberto; Piccinin, Gleberson Guillen; Ponce, Raissa Marrafon

doi:10.5935/1806-6690.20170043

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Crop Science • Rev. Ciênc. Agron. 48 (2) • Apr-Jun 2017 • https://doi.org/10.5935/1806-6690.20170043 copy

Adaptability and stability of canola hybrids in different sowing dates¹ 1 Parte da Dissertação de Mestrado do primeiro autor apresentada ao Programa de Pós-graduação em Genética e Melhoramento da Universidade Estadual de Maringá/UEM; pesquisa realizada com suporte financeiro do Edital Universal do CNPq

Adaptabilidade e estabilidade de híbridos de canola em diferentes épocas de semeadura

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Canola is an important crop in the world market, mainly for its oil being used for human consumption and biodiesel production, being a great economical option for the farmer, which are the reasons to the increase in its cultivation in Brazil. This study aimed to evaluate the adaptability and stability of canola hybrids, depending on the sowing dates. The canola hybrids (Hyola 61, Hyola 76, Hyola 411 and Hyola 433) were evaluated in three sowing dates (04/10, 04/25 and 05/10) in the agricultural years of 2013 and 2014, under a randomized complete block design with five replications. The response variables analyzed were seed yield and oil content. Adaptability and stability of the hybrids were evaluated by three methods: Wricke's ecovalence (1962); confidence index (ANNICCHIARICO, 1992ANNICCHIARICO, P. Cultivar adaptation and recomendation from alfafa trials in Northern Italy. Journal of Genetics and Plant Breeding, v. 46, n. 1, p. 269-278, 1992.) and method of maximum ideal deviation (LIN; BINNS, 1988LIN, C. S.; BINNS, M. R. A superiority measure of cultivar performance for cultivars x location data. Canadian Journal of Plant Science, v. 68, n. 1, p. 193-198, 1988.). The methodology proposed by Wricke (1962)WRICKE, G. Uber eine method zur erfassung der okologischen streubreit in feldversuchen. Zeitschrift für Pflanzenzucht, v. 47, p. 92-96, 1962. highlighted as stable the hybrids Hyola 61 for seed yield and Hyola 411 for oil content. In the methodology proposed by Lin and Binns (1988)LIN, C. S.; BINNS, M. R. A superiority measure of cultivar performance for cultivars x location data. Canadian Journal of Plant Science, v. 68, n. 1, p. 193-198, 1988. and Annicchiarico (1992)ANNICCHIARICO, P. Cultivar adaptation and recomendation from alfafa trials in Northern Italy. Journal of Genetics and Plant Breeding, v. 46, n. 1, p. 269-278, 1992., the hybrids with higher general adaptability and stability were Hyola 411 and 433. These hybrids presented the highest means for seed yield and oil content with predictable and responsive behavior to changes in sowing dates tested in the region of Maringá-PR.

Key words:
Brassica napus L; Oil content; Productivity

Characteristics	Canola hybrids
Characteristics	Hyola 61	Hyola 76	Hyola 411	Hyola 433
Emergence to early flowering (days)	53-77	61-81	59-65	58-67
Flowering duration (days)	28-52	24-62	30-72	28-73
Emergence to maturity (days)	123-155	120-164	120-150	120-150
Cicle	Medium	Long	Early	Early
Plant height (cm)	88-136	126-159	128-139	124-131
Reaction to the disease "blackleg" (Leptosphaeria maculans)	Polygenic resistance	Polygenic resistance	Polygenic resistance	Polygenic resistance

Sources of Variation	SY (kg ha^-1)		OIL (%)
Sources of Variation	DF	Mean Square	DF	Mean Square
Blocks/ Sowing dates	24	20,494.86	24	10.88
Hybrids (H)	3	117,012.19^* * Significant at 5% probability by the F test;	3	22.07^* * Significant at 5% probability by the F test;
Sowing dates (D)	5	119,695.59^* * Significant at 5% probability by the F test;	5	15.26^ns ns Non Significant at 5% probability by the F test
H x D	12¹ 1 Adjusted degrees of freedom according to Cochran (1954);	52,256.71^* * Significant at 5% probability by the F test;	15	29.79^* * Significant at 5% probability by the F test;
Error	57¹ 1 Adjusted degrees of freedom according to Cochran (1954);	15,483.70	72	5.50
C.V (%)		13.51		5.97
Overall Mean		1,081.01		39.26

Canola hybrids	SY			OIL
Canola hybrids	Means¹ 1 Means followed by the same capital letter in the column do not differ by the Scott-Knott test at 5% probability (kg ha^-1)	Ecovalence (ω_i)	ω_i (%)	Means¹ 1 Means followed by the same capital letter in the column do not differ by the Scott-Knott test at 5% probability (%)	Ecovalence (ω_i)	ω_i (%)
Hyola 61	1,048.74 A	52,881.19	8.43	38.84 A	89.80	20.10
Hyola 76	1,009.32 A	70,386.30	11.22	38.26 A	172.66	38.64
Hyola 411	1,140.66 A	142,697.87	22.76	39.97 A	36.51	8.17
Hyola 433	1,125.31 A	361,115.16	57.59	39.99 A	147.90	33.10
Total	-	627,080.51	100.00	-	446.88	100.00
Overall Mean	1,081.01	-	-	39.26	-	-

Seed yield
Canola hybrids	Means¹ 1 Means followed by the same capital letter in the column do not differ by the Scott-Knott test at 5% probability. (kg ha^-1)	^µ̂_i(%)	^σ̂_Zi(%)	I_i² 2 α=0.25 of probability (%)
Hyola 61	1,048.74 A	97.05	4.23	94.20
Hyola 76	1,009.32 A	93.61	4.37	90.66
Hyola 411	1,140.66 A	105.63	6.77	101.06
Hyola 433	1,125.31 A	103.71	10.12	96.88
Overall Mean	1,081.01	-	-	-
Oil content
Canola hybrids	Means¹ 1 Means followed by the same capital letter in the column do not differ by the Scott-Knott test at 5% probability. (%)	^µ̂_i(%)	^σ̂_Zi(%)	I_i² 2 α=0.25 of probability (%)
Hyola 61	38.84 A	98.85	4.89	95.55
Hyola 76	38.26 A	97.50	6.55	93.09
Hyola 411	39.97 A	101.77	3.10	99.67
Hyola 433	39.99 A	101.88	6.16	97.72
Overall Mean	39.26	-	-	-

Seed yield
Canola hybrids	Means¹ 1 Means followed by the same capital letter in the column do not differ by the Scott-Knott test at 5% probability (kg ha^-1)	P_i	Deviation		% (Genetic)
Canola hybrids		P_i	Genetic (P_ig)	Interaction (P_iga)	% (Genetic)
Hyola 61	1,048.74 A	18,360.41	11,322.07	7,038.35	61.67
Hyola 76	1,009.32 A	26,462.13	18,032.46	8,429.67	68.14
Hyola411	1,140.66 A	9,551.46	1,715.16	7,836.30	17.96
Hyola 433	1,125.31 A	4,508.51	2,731.52	1,776.99	60.59
Overall Mean	1,081.01	-	-	-	-
Oil content
Canola hybrids	Means¹ 1 Means followed by the same capital letter in the column do not differ by the Scott-Knott test at 5% probability (%)	P_i	Deviation		% (Genetic)
Canola hybrids		P_i	Genetic (P_ig)	Interaction (P_iga)	% (Genetic)
Hyola 61	38.84 A	4.88	2.72	2.16	55.69
Hyola 76	38.26 A	9.08	4.21	4.87	46.39
Hyola411	39.97 A	1.41	0.72	0.69	51.05
Hyola 433	39.99 A	2.09	0.69	1.40	33.04
Overall Mean	39.26	-	-	-	-

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