Performance of low phosphorus tolerant rice genotypes under drought stress

Guimarães, Cleber Morais; Stone, Luís Fernando; Carvalho, Maria da Conceição Santana; Colombari Filho, José Manoel

doi:10.1590/0034-737X201865030005

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Sumário

Plant Production • Rev. Ceres 65 (03) • May-Jun 2018 • https://doi.org/10.1590/0034-737X201865030005 copy

Performance of low phosphorus tolerant rice genotypes under drought stress

Desempenho de genótipos de arroz tolerantes a baixo nível de fósforo sob deficiência hídrica

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The identification of genotypes more tolerant to water deficit and more efficient in the use of nutrients little available in the soil is an important low-cost strategy to promote sustainable agriculture in marginalized regions. In this sense, a study was carried out in the SITIS Phenotyping Platform of the Embrapa Arroz e Feijão, with the objective of evaluating the drought tolerance of upland rice genotypes tolerant to phosphorus (P) deficiency. The experimental design was performed in a randomized complete block with split-split plots and two replications. In the plots were established two water regimes (with and without water deficit), in the subplots two soil phosphorus contents (25 and 200 mg dm^-3) and in sub-subplots 48 upland rice genotypes. The water deficit had more impact on grain yield than the phosphorus supply. The genotypes AB 062037, AB 062041, AB 062138, Arroz Mato Grosso, BRA 02601, BRA 052045, CNA 4098, CNA 6187, Guapa, Guaporé and Rio Paranaíba were classified in the most productive group under both water regimes. The most productive genotypes under water deficit showed higher root density in the deeper soil layers. The most productive genotypes in the two water regimes were also those that showed the highest transpiration.

Keywords:
Oryza sativa L.; abiotic stress; root system; evapotranspiration.

Universidade Federal de Viçosa Av. Peter Henry Rolfs, s/n, 36570-000 Viçosa, Minas Gerais Brasil, Tel./Fax: (55 31) 3612-2078 - Viçosa - MG - Brazil
E-mail: ceres@ufv.br

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[1] *Autor para correspondência: cleber.guimaraes@embrapa.br

Source of variation	DF	Mean square
		GY	LeafBio	StemBio	Root density
		GY	LeafBio	StemBio	0-0.2 m	0.2-0.4 m	0.4-0.6 m	0.6-0.8 m	0.8-1.0 m
Replication	1	975.1^ns	5.8*	230.2^ns	0.32^ns	0.12^ns	0.17^ns	0.10^ns	0.06^ns
Water regime (WR)	1	318,718.1**	2,896.8**	19,966.4*	1.03^ns	0.50**	0.28**	1.81**	4.26*
Error A	1	62.5	0.005	39.5	0.05	0.01	0.01	0.09	0.45
P content (P)	1	243.8^ns	363.0^ns	3,786.1^ns	0.07^ns	0.25^ns	0.02^ns	0.03^ns	0.10^ns
WR x P	1	4,634.3**	276.0	1,179.6^ns	0.01^ns	0.01	0.01^ns	0.17^ns	0.53^ns
Error B	2	160.7	32.2	583.1	1.23	0.12	0.03	0.03	0.05
Genotype (G)	47	1,031.7**	463.3**	1,331.3**	0.62**	0.17**	0.11**	0.12**	0.19**
WR x G	47	435.8**	22.2^ns	117.2*	0.08^ns	0.05**	0.05*	0.04**	0.12**
P x G	47	200.1^ns	23.0^ns	84.7^ns	0.05^ns	0.03^ns	0.04^ns	0.03^ns	0.07^ns
WR x P x G	47	214.9^ns	21.1^ns	80.1^ns	0.05^ns	0.03^ns	0.02^ns	0.03^ns	0.05^ns
Error C	188	186.8	21.1	81.8	0.08	0.03	0.03	0.02	0.05
CV (%)		22.0	17.3	16.7	37.6	33.6	36.8	29.9	38.2

Genotype	GY	LeafBio	StemBio	Root density (mg cm^-3)
Genotype	(g per column)			0-0.2 m	0.2-0.4 m	0.4-0.6 m	0.6-0.8 m	0.8-1.0 m
CNA 4140	51.6a	35.5a	59.6c	1.06b	0.64a	0.65a	0.68a	0.95a
CNA 6187	50.3a	26.2c	54.8c	0.88b	0.44b	0.56a	0.45b	0.51b
Arroz Mato Grosso	50.0a	31.7b	58.0c	0.76b	0.61a	0.78a	0.64a	0.66a
BRA 02601	45.9a	36.1a	66.9c	0.85b	0.62a	0.63a	0.79a	0.85a
BRS Esmeralda	44.8a	20.3d	36.9e	0.35c	0.43b	0.41b	0.46b	0.41b
BRA 052023	44.8a	23.6c	44.8d	0.60c	0.52b	0.50a	0.46b	0.42b
Rio Paranaíba	44.4a	39.7a	62.0c	0.83b	0.40b	0.51a	0.64a	0.88a
TOX 503-4-115-B-B	43.0a	25.3c	46.9d	1.04b	0.61a	0.39b	0.56a	0.64a
BRS Bonança	42.8a	21.9c	40.1d	0.96b	0.50b	0.42b	0.46b	0.64a
Guaporé	42.4a	36.3a	47.9d	0.89b	0.84a	0.55a	0.48b	0.79a
CNA 4137	41.1a	13.1d	33.7e	0.38c	0.20b	0.28b	0.32b	0.29b
CNA 4098	40.8a	30.0b	47.5d	1.08b	0.74a	0.44b	0.54a	0.88a
Guapa	40.8a	36.7a	64.4c	0.91b	0.53b	0.61a	0.62a	0.95a
BRA 052045	40.3a	39.7a	68.1c	1.45a	0.65a	0.56a	0.49b	0.73a
AB 062041	40.1a	30.2b	53.9c	1.03b	0.68a	0.58a	0.67a	0.77a
AB 062037	39.8a	30.1b	64.1c	0.84b	0.47b	0.37b	0.48b	0.56b
IREM 247	38.1a	15.8d	40.3d	0.45c	0.45b	0.50a	0.37b	0.47b
Urucuí	37.0a	18.6d	35.5e	0.58c	0.41b	0.55a	0.37b	0.40b
BRSMG 355	36.6a	9.0d	27.3e	0.40c	0.30b	0.34b	0.38b	0.39b
CNA 5018	36.6 a	42.9a	69.8c	1.28a	0.66a	0.56a	0.48b	0.57b
BRA 032033	36.2a	25.6c	47.4d	0.59c	0.53b	0.36b	0.43b	0.37b
CNA 6682	35.7 a	17.5d	39.5d	0.44c	0.42b	0.41b	0.38b	0.41b
CNA 7680	34.7 a	15.4d	32.7e	0.50c	0.33b	0.38b	0.30b	0.37b
AB 062138	34.3 a	27.8b	59.0c	0.90b	0.57a	0.51a	0.56a	0.63a
BRSMG Caravera	34.2 a	19.0d	34.4e	0.51c	0.49b	0.52a	0.54a	0.37b
Guarani	33.6 a	17.9d	36.3e	0.37c	0.46b	0.38b	0.34b	0.42b
Mean a⁽¹⁾	40.8	26.4	48.9	0.77	0.52	0.49	0.50	0.59
Douradão	31.8b	18.7d	38.3e	0.64c	0.34b	0.36b	0.37b	0.40b
IAPAR 9	31.1b	13.9d	29.5e	0.49c	0.42b	0.37b	0.31b	0.47b
CNA 7451	31.0b	22.9c	34.6e	0.52c	0.26b	0.32b	0.36b	0.39b
CT11891-3-3-3-M	31.0b	12.6d	22.7e	0.42c	0.28b	0.27b	0.31b	0.29b
4 Meses Branco	29.0b	18.5d	35.2e	0.48c	0.40b	0.44b	0.27b	0.33b
CNA 6687	28.0b	21.4c	45.7d	0.52c	0.42b	0.44b	0.41b	0.54b
CNA 4128	27.0b	18.8d	41.0d	0.54c	0.47b	0.44b	0.47b	0.51b
IAC 25	26.9b	18.2d	36.9e	0.53c	0.40b	0.44b	0.47b	0.41b
CNA 5166	26.5b	19.0d	39.3d	0.54c	0.48b	0.35b	0.39b	0.34b
Arroz Branco Precoce	26.2b	19.5d	41.6d	0.50c	0.50b	0.46b	0.46b	0.48b
IREM 656	25.9b	19.6d	44.5d	0.48c	0.32b	0.43b	0.51b	0.41b
BRA 032051	25.6b	15.2d	40.9d	0.40c	0.34b	0.41b	0.37b	0.32b
AB 062048	24.7b	16.1d	39.7d	0.44c	0.35b	0.29b	0.27b	0.37b
BRS Pepita	24.5b	19.9d	48.6d	0.38c	0.26b	0.49a	0.47b	0.50b
CNA 7864	24.4b	20.2d	38.1e	0.52c	0.35b	0.40b	0.37b	0.47b
CT11632-3-3-M	23.3b	38.8a	82.2b	1.51a	0.85b	0.56a	0.47b	0.53b
BRA 052053	22.6b	15.4d	44.0d	0.65c	0.30b	0.29b	0.34b	0.36b
BRA 052034	22.1b	25.0c	47.7d	0.71c	0.47b	0.41b	0.37b	0.45b
Noventinha	20.8b	19.4d	38.2e	0.57c	0.34b	0.42b	0.44b	0.33b
BRA 01600	19.9b	26.4c	50.1d	0.56c	0.45b	0.64a	0.45b	0.32b
BRA 01596	12.4b	21.4c	40.1d	0.62c	0.52b	0.66a	0.39b	0.37b
Farroupilha	9.6b	37.4a	99.5a	1.13b	0.51b	0.42b	0.69a	0.66a
Mean b⁽²⁾	24.7	20.8	44.5	0.60	0.41	0.42	0.41	0.42
General mean	33.4	23.8	46.9	0.69	0.47	0.46	0.46	0.51

Genotype	GY	LeafBio	StemBio	Root density (mg cm^-3)
Genotype	(g per column)			0-0.2 m	0.2-0.4 m	0.4-0.6 m		0.6-0.8 m	0.8-1.0 m
CNA 6187	119.7a	35.6b	75.0b	0.91b	0.53c	0.57a	0.77a	0.80b
BRA 052045	118.4a	38.5b	65.1c	1.41a	0.70b	0.65a	0.67a	0.56c
Guapa	112.9a	39.3b	75.4b	0.89b	0.61b	0.56a	0.74a	0.60c
AB 062138	112.3a	33.9b	61.5c	0.97b	0.42c	0.55a	0.66a	0.83b
Arroz Mato Grosso	112.1a	39.1b	73.9b	0.88b	0.86a	0.88a	0.81a	0.87b
CNA 4098	111.6a	32.1b	56.8c	0.53c	0.50c	0.33b	0.61a	0.80b
BRA 02601	110.5a	39.2b	81.1b	1.15b	0.56b	0.82a	0.99a	1.02b
Rio Paranaíba	109.9a	42.3a	69.5b	1.10b	0.61b	0.73a	0.73a	0.71c
AB 062041	108.5a	28.3c	59.4c	0.79c	0.65b	0.64a	0.61a	0.61c
AB 062037	107.7a	32.3b	63.7c	1.03b	0.58b	0.55a	0.60a	0.61c
BRA 052034	107.5a	31.6c	59.7c	0.60c	0.39c	0.46b	0.40b	0.57c
Guaporé	106.1a	43.4a	59.9c	0.87b	0.69b	0.59a	0.77a	0.93b
CNA 4140	102.9a	36.7b	68.6b	1.01b	1.03a	0.67a	0.82a	0.79b
BRA 01600	102.3a	31.2c	68.6b	1.01b	0.49c	0.58a	0.64a	0.69c
Urucuí	102.2a	26.6c	58.3c	0.68c	0.44c	0.36b	0.51b	0.64c
CT 11632-3-3-M	98.4a	43.2a	86.1b	1.65a	1.09a	0.87a	0.73a	0.92b
BRA 032051	97.8a	24.1dd	66.5c	0.75c	0.45c	0.47b	0.69a	0.68c
BRA 052023	96.3a	29.4c	65.2c	0.56c	0.77b	0.52a	0.48b	0.64c
CNA 5018	96.1a	45.5a	83.6b	1.41a	0.53c	0.72a	0.68a	0.88b
BRS Esmeralda	95.7a	31.1c	57.5c	0.63c	0.68b	0.70a	0.61a	0.82b
CNA 4128	95.6a	24.9d	59.3c	0.95b	0.88a	0.67a	0.75a	0.91b
BRA 052053	95.1a	24.6d	59.8c	0.85b	0.39c	0.46b	0.49b	0.57c
CNA 4137	93.6a	21.1d	50.1d	0.55c	0.60b	0.54a	0.59a	0.62c
BRA 032033	91.1a	27.7c	66.7c	0.71c	0.62b	0.70a	0.90a	1.03b
BRS Pepita	91.0a	25.8c	55.8c	0.62c	0.35c	0.52a	0.60a	0.74c
CNA 7864	90.8a	25.1d	56.9c	0.87b	0.74b	0.50a	0.62a	0.66c
IAPAR 9	90.1a	24.2d	50.8d	0.70c	0.55c	0.51a	0.57a	0.58c
BRSMG Caravera	89.6a	23.4d	52.3d	0.55c	0.45c	0.27b	0.39b	0.56c
Mean a⁽¹⁾	102.3	32.1	64.5	0.88	0.61	0.58	0.66	0.74
AB 062048	88.2b	20.5d	48.9d	0.44c	0.38c	0.36b	0.33b	0.38c
TOX 503-4-115-B-B	87.7b	37.7b	76.9b	1.29a	0.61b	0.67a	0.70a	0.83b
BRA 01596	87.2b	24.1d	42.3d	0.37c	0.29c	0.19b	0.22b	0.32c
CNA 6687	85.1b	26.7c	57.3c	0.70c	0.50c	0.37b	0.46b	0.72c
CNA 7680	83.0b	25.9c	62.0c	0.74c	0.45c	0.51a	0.69a	0.99b
CNA 7451	81.7b	24.4d	64.9c	0.59c	0.54c	0.46b	0.60a	0.65c
Douradão	81.2b	27.3c	53.9d	0.48c	0.28c	0.28b	0.42b	1.48a
4 Meses Branco	80.3b	22.0d	52.2d	0.54c	0.43c	0.32b	0.47b	0.47c
Guarani	80.0b	21.5d	53.3d	0.70c	0.59b	0.57a	0.58a	0.85b
Arroz Branco Precoce	78.8b	24.1d	53.1d	0.76c	0.63b	0.54a	0.64a	0.75b
BRS Bonança	78.4b	26.9c	52.1d	1.15b	0.58b	0.48b	0.65a	0.90b
CNA 5166	77.3b	23.7d	50.2d	0.41b	0.40c	0.32b	0.36b	0.54c
Mean b⁽²⁾	82.4	25.4	55.6	0.68	0.47	0.42	0.51	0.74
IREM 247	71.1c	21.4d	55.8	0.44v	0.40c	0.38b	0.51b	0.50c
CNA 6682	68.9c	26.5c	59.5	0.61v	0.36c	0.36b	0.45b	0.49c
Farroupilha	68.9c	37.6b	106.9	1.31a	0.60b	0.60a	0.48b	0.85b
CT 11891-3-3-3-M	67.5c	19.1d	38.5	0.36c	0.26c	0.29b	0.32b	0.46c
IAC 25	67.2c	24.7d	56.7	0.68c	0.44c	0.38b	0.52b	0.59c
IREM 656	64.1c	27.2c	53.5	0.97b	0.52c	0.53a	0.72a	0.91b
BRSMG 355	58.6c	22.2d	53.0	0.52c	0.36c	0.41b	0.58a	0.98b
Noventinha	49.2c	23.7d	44.6	0.39c	0.23c	0.28b	0.31b	0.45c
Mean c⁽³⁾	64.4	25.3	58.6	0.66	0.40	0.40	0.49	0.65
General mean	91.0	29.3	61.3	0.79	0.54	0.51	0.59	0.72

Variable	LeafBio		StemBio	Root density
Variable	LeafBio		StemBio	0-0.2 m	0.2-0.4 m	0.4-0.6 m	0.6-0.8 m	0.8-1.0 m
GY	0.401*	0.383*	0.296 ^ns	0.228 ^ns	0.432*	0.539**	0.443*
LeafBio			0.922**	0.822**	0.716**	0.608**	0.724**	0.773**
StemBio				0.785**	0.565**	0.584**	0.719**	0.692**
Root density	0-0.2 m				0.727**	0.525**	0.618**	0.739**
	0.2-0.4 m					0.645**	0.593**	0.719**
	0.4-0.6 m						0.707**	0.647**
	0.6-0.8 m							0.854**