Adaptability and stability of flood-irrigated rice cultivars released to the subtropical region of Brazil

Streck, Eduardo Anibele; Magalhães Júnior, Ariano Martins de; Fagundes, Paulo Ricardo Reis; Aguiar, Gabriel Almeida; Facchinello, Paulo Henrique Karling; Oliveira, Antônio Costa de

doi:10.1590/S0100-204X2018001000007

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GENETICS • Pesq. agropec. bras. 53 (10) • Oct 2018 • https://doi.org/10.1590/S0100-204X2018001000007 copy

Adaptability and stability of flood-irrigated rice cultivars released to the subtropical region of Brazil

Adaptabilidade e estabilidade de cultivares de arroz irrigado por inundação lançadas para a região subtropical do Brasil

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract:

The objective of this work was to estimate the effects of genotype x environment interaction and the genetic potential of flood-irrigated rice cultivars, released between 1972 and 2017, for the state of Rio Grande do Sul, Brazil. The experiments were carried out in the field, in all agroclimatic regions of flood-irrigated rice crop in the state, between the 2005/2006 and 2015/2016 crop years, totaling 60 environments (trials), with 1,961 experimental units. Twenty-five cultivars of irrigated rice were evaluated for the traits grain yield, plant height, days to flowering, and whole grain quality after milling. The values of adaptability and stability were estimated with the aid of mixed models. The rice cultivars BRS Pampa, BRS Pampeira, and BRSCIRAD 302 showed simultaneously high-genotypic grain yield, adaptability, stability, good agronomic traits, and good whole-grain yield after milling. 'BRSCIRAD 302' and 'BRS Pampa' show high-yield stability and can be recommended for all rice cultivation regions of Rio Grande do Sul. 'BRS Pampeira' is responsive to environmental improvements and is indicated for high-technology conditions.

Index terms:
Oryza sativa; genotype x environment interaction; mixed models; plant breeding; zoning of cultivars

Embrapa Secretaria de Pesquisa e Desenvolvimento; Pesquisa Agropecuária Brasileira Caixa Postal 040315, 70770-901 Brasília DF Brazil, Tel. +55 61 3448-1813, Fax +55 61 3340-5483 - Brasília - DF - Brazil
E-mail: pab@embrapa.br

Acompanhe os números deste periódico no seu leitor de RSS

[TFN1] ⁽¹⁾
Cultivar released by Embrapa and IRGA (Instituto Rio Grandense do Arroz). ⁽²⁾Cultivar released by Embrapa and Epagri (Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina). ⁽³⁾Hybrid released by Embrapa and Cirad.

Variance component⁽¹⁾	Grain yield (kg ha^-1)	DTF (days)	Plant height (cm)	WG (%)
ˆσ²_g	1,787,804.963	75.644	39.733	4.704
ˆσ²_ga	12,678.722	3.187	3.341	0.250
ˆσ²_gl	273,379.473	0.622	0.620	0.111
ˆσ²_gla	771,868.191	11.557	4.981	11.185
ˆσ²_e	856,431.061	9.082	17.437	7.801
ˆσ²_f	3,702,162.410	100.093	66.112	24.051
ĥ²_g	0.483±0.040	0.756±0.060	0.601±0.050	0.196±0.030
ĉ²_ga	0.003	0.032	0.051	0.010
ĉ²_gl	0.074	0.006	0.009	0.005
ĉ²_gla	0.208	0.115	0.075	0.465
â^c_g	0.970	0.990	0.980	0.770
ȓ_gl	0.867	0.992	0.985	0.977
ȓ_ga	0.993	0.960	0.922	0.950
ȓ_{gl_a}	0.868	0.992	0.986	0.978
ȓ_{ga_1}	0.994	0.960	0.924	0.951
ȓ_gla	0.628	0.831	0.816	0.289
ˆμ	7,718.2	89.0	94.2	60.6

Cultivar	YL⁽¹⁾	ȓ_ĝg	Rº⁽²⁾	Ĝ_i	Rº	MHVG	Rº	PRVG	Rº	MHPRVG
BRS Pampa	2011	0.97	1^st	9837	3^rd	9455	1^st	1.302	1^st	1.287
BRSCIRAD 302	2010	0.93	2^nd	9247	1^st	10280	4^th	1.187	4^th	1.177
BRS Pampeira	2016	0.96	3^rd	9216	5^th	8625	2^nd	1.209	2^nd	1.193
BRSCIRAD AH703 CL	2017	0.96	4^th	9093	6^th	8590	3^rd	1.198	3^rd	1.188
BR/IRGA 412	1986	0.91	5^th	8783	2^nd	9514	5^th	1.144	5^th	1.141
BRS 7 Taim	1991	0.97	6^th	8641	9^th	8322	6^th	1.123	6^th	1.117
BRS Pelota	2000	0.97	7^th	8557	8^th	8482	8^th	1.108	8^th	1.093
BRS Agrisul	1995	0.90	8^th	8533	4^th	9253	7^th	1.113	7^th	1.108
BR/IRGA 410	1980	0.97	9^th	8377	12^th	8070	9^th	1.080	10^th	1.070
BRS Fronteira	2005	0.97	10^th	8280	11^th	8122	11^th	1.075	11^th	1.066
BRS 358	2015	0.93	11^th	8259	10^th	8234	12^th	1.074	9^th	1.070
BRS Querência	2005	0.97	12^th	8239	13^th	7930	10^th	1.075	12^th	1.060
BR/IRGA 409	1979	0.97	13^th	8185	14^th	7909	13^th	1.066	13^th	1.060
BRS Sinuelo CL	2010	0.97	14^th	8058	16^th	7589	14^th	1.056	14^th	1.047
BR/IRGA 413	1986	0.91	15^th	7963	7^th	8563	15^th	1.035	15^th	1.026
BRS 6 Chuí	1991	0.97	16^th	7779	15^th	7806	16^th	1.012	16^th	1.002
BRS AG	2015	0.93	17^th	7290	19^th	6914	17^th	0.935	17^th	0.905
BR/IRGA 414	1987	0.90	18^th	6765	17^th	7273	18^th	0.874	18^th	0.872
IAS 12-9 (Formosa)	1972	0.91	19^th	6689	18^th	7005	20^th	0.864	20^th	0.839
BRS Firmeza	1999	0.96	20^th	6672	20^th	6538	19^th	0.867	19^th	0.845
BRS Bojuru	1997	0.91	21^st	5958	21^st	6273	21^st	0.764	21^st	0.753
SCSBRS 113 - Tio Taka	2004	0.88	22^nd	5831	23^rd	5826	23^rd	0.733	23^rd	0.710
BRS Atalanta	1999	0.96	23^rd	5679	24^th	5766	22^nd	0.748	22^nd	0.721
BR/IRGA 411	1985	0.91	24^th	5574	22^nd	5856	24^th	0.715	24^th	0.701
BRS Ligeirinho	1995	0.90	25^th	5067	25^th	5275	25^th	0.649	25^th	0.629

Cultivar	Rº	Favorable (kg ha^-1)	Rº	Unfavorable (kg ha^-1)	Rº	ΔĜ_i (kg ha^-1)
BRS Pampa	1^st	10,593	1^st	9,436	15^th	1,157
BRS Pampeira	2^nd	10,423	3^rd	8,651	8^th	1,772
BRS Pelota	3^rd	10,105	6^th	8,185	4^th	1,920
BR/IRGA 410	4^th	9,980	9^th	7,946	2^nd	2,033
BRS 7 Taim	5^th	9,895	8^th	8,109	7^th	1,786
BRSCIRAD 302	6^th	9,741	2º	8,971	23^rd	771.0
BRS Querência	7^th	9,600	14^th	7,776	5^th	1,824
BRSCIRAD AH703 CL	8^th	9,595	4^th	8,517	16^th	1,078
BR/IRGA 412	9^th	9,559	5^th	8,488	17^th	1,072
BRS Agrisul	10^th	9,528	7^th	8,159	14^th	1,369
BRS Fronteira	11^th	9,352	10^th	7,873	11^th	1,478
BR/IRGA 409	12^th	9,272	13^th	7,792	10^th	1,480
BRS 6 Chuí	13^th	9,097	16^th	7,378	9^th	1,719
BRS 358	14^th	8,757	11^th	7,844	20^th	913.0
BRS Sinuelo CL	15^th	8,546	12^th	7,812	24^th	734.0
BR/IRGA 413	16^th	8,525	15^th	7,728	21^st	797.0
BRS Firmeza	17^th	7,955	20^th	6,136	6^th	1,819
BR/IRGA 414	18^th	7,824	19^th	6,348	12^th	1,476
BRS AG	19^th	7,730	17^th	6,959	22^nd	771.0
BRS Atalanta	20^th	7,587	23^rd	5,204	1^st	2,383
IAS 12-9 (Formosa)	21^st	7,073	18^th	6,496	25^th	577.0
SCSBRS 113 - Tio Taka	22^nd	6,999	24^th	5,061	3^rd	1,938
BRS Bojuru	23^rd	6,605	21^st	5,668	19^th	937.0
BR/IRGA 411	24^th	6,281	22^th	5,260	18^th	1,022
BRS Ligeirinho	25^th	6,044	25^th	4,656	13^th	1,388
Average	-	8,667	-	7,298	-	1,368

Cultivar	Release	DTF (days)		Plant height (cm)		WG (%)
Cultivar	Release	Ĝ_i	ȓ_ĝg	Ĝ_i	ȓ_ĝg	Ĝ_i	ȓ_ĝg
BRS Ligeirinho	1995	69	0.94	83.23	0.94	60.50	0.70
BRS Atalanta	1999	72	0.97	91.54	0.97	58.99	0.88
BR/IRGA 414	1987	81	0.94	92.72	0.94	62.40	0.73
BRS 6Chuí	1991	81	0.97	90.32	0.97	60.80	0.92
BRS Querência	2005	81	0.98	96.01	0.98	59.05	0.94
BRS Firmeza	1999	84	0.97	89.13	0.97	61.99	0.90
BRSCIRAD AH703 CL	2017	84	0.97	93.02	0.97	62.85	0.88
BRS Pampa	2011	85	0.97	95.33	0.97	62.19	0.92
BRS 358	2015	88	0.96	86.42	0.96	62.04	0.78
BRS Pelota	2000	89	0.97	95.58	0.97	60.51	0.92
BR/IRGA 410	1980	91	0.98	96.81	0.98	61.66	0.94
BRS Sinuelo CL	2010	91	0.97	86.51	0.97	61.45	0.92
BRSCIRAD 302	2010	91	0.96	98.31	0.96	60.91	0.82
BR/IRGA 411	1985	92	0.94	108.83	0.94	58.20	0.75
BRS AG	2015	92	0.96	109.50	0.96	56.21	0.78
BR/IRGA 412	1986	92	0.94	91.51	0.94	60.89	0.75
IAS 12-9 (Formosa)	1972	92	0.94	104.55	0.94	58.17	0.74
BRS 7 Taim	1991	92	0.98	89.60	0.98	61.14	0.94
BRS Agrisul	1995	93	0.94	94.03	0.94	56.91	0.75
BR/IRGA 413	1986	93	0.94	98.38	0.94	62.86	0.75
BRS Bojuru	1997	93	0.94	92.98	0.94	59.49	0.75
BR/IRGA 409	1979	94	0.98	93.95	0.98	62.49	0.94
BRS Fronteira	2005	94	0.97	95.08	0.97	63.32	0.93
BRS Pampeira	2016	99	0.97	96.07	0.97	60.28	0.88
SCSBRS 113 - Tio Taka	2004	114	0.94	86.05	0.94	61.16	0.70