UENF WS01: popcorn hybrid with water use efficiency for the State of Rio de Janeiro

The UENF WS01 is a hybrid that has an early cycle and high grain yield capacity under low water and nitrogen availability. It maintains popping expansion even under abiotic stress, thus being recommended for cultivation in the North and Northwest of the State of Rio de Janeiro.

Keywords:
Plant breeding; abiotic stress; drought; nutritional deficiency

Authorship

Valter Jário de Lima ^** E-mail: valter_jario@hotmail.com

Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Centro de Ciências e Tecnologias Agropecuárias (CCTA), Laboratório de Melhoramento Genético Vegetal, 28.013-602, Campos dos Goytacazes, Brazil. Universidade Estadual do Norte Fluminense Darcy RibeiroBrazilCampos dos Goytacazes, BrazilUniversidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Centro de Ciências e Tecnologias Agropecuárias (CCTA), Laboratório de Melhoramento Genético Vegetal, 28.013-602, Campos dos Goytacazes, Brazil.

http://orcid.org/0000-0002-2982-085X

Antônio Teixeira do Amaral Júnior

Samuel Henrique Kamphorst

Adriano dos Santos

Katia Fabiane Medeiros Schmidt

Valdinei Cruz Azeredo

Jhean Torres Leite

Divino Rosa dos Santos Junior

Talles de Oliveira Santos

Rosimeire Barboza Bispo

Carolina Macedo Carvalho

Yure Pequeno de Souza

Fabio Tomaz de Oliveira

Marcelo Moura Chaves

Uéliton Alves de Oliveira

Gabrielle Sousa Mafra

Pedro Henrique Araújo Diniz Santos

* E-mail: valter_jario@hotmail.com

SCIMAGO INSTITUTIONS RANKINGS

Figures | Tables

Figures (2)
Tables (2)

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Figure 1
Performance comparison of grain yield (t ha^-1) of popcorn UENF WS01 hybrid with controls (UENF14 and hybrids) and mean experimental values in crop seasons of 2018 and 2020 under well-watered (WW) and water stress (WS) conditions.

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Figure 2
Performance comparison of grain yield (t ha^-1) of popcorn UENF WS01 hybrid with controls (UENF14 and hybrids) and mean experimental values in Campos dos Goytacazes and Itaocara, RJ, under low and high soil N availability.

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Table 1
Summary of the analysis of variance, coefficient of variation, water and N use efficiencies and mean values of WS01 hybrid under different experimental conditions (in the crop seasons of 2018 and 2020, under well-watered (WW) and water stress (WS)), and nitrogen fertilization (Campos dos Goytacazes and Itaocara, RJ), with low or high soil N availability

Thumbnail

Table 2
Means of the agronomic and morphological traits of the UENF WS01 popcorn hybrid under ideal cultivation conditions (IC), water stress (WS), and low nitrogen (N) availability

Figure 1 Performance comparison of grain yield (t ha^-1) of popcorn UENF WS01 hybrid with controls (UENF14 and hybrids) and mean experimental values in crop seasons of 2018 and 2020 under well-watered (WW) and water stress (WS) conditions.

Figure 2 Performance comparison of grain yield (t ha^-1) of popcorn UENF WS01 hybrid with controls (UENF14 and hybrids) and mean experimental values in Campos dos Goytacazes and Itaocara, RJ, under low and high soil N availability.

Table 1 Summary of the analysis of variance, coefficient of variation, water and N use efficiencies and mean values of WS01 hybrid under different experimental conditions (in the crop seasons of 2018 and 2020, under well-watered (WW) and water stress (WS)), and nitrogen fertilization (Campos dos Goytacazes and Itaocara, RJ), with low or high soil N availability

Identification	Environment
	2018		2020		Campos dos Goytacazes		Itaocara
	WW	WS	WW	WS	High N	Low N	High N	Low N
Middle square	0.9682 ^**	0.6686 ^**	1.6031 ^**	0.5443 ^**	0.5767 ^**	0.5205 ^**	1.1378 ^**	0.7525 ^**
CVe (%)	11.3	16.42	12.61	16.71	6.3	8.67	5.68	8.58
Experimental means (t ha^-1)	3.24	1.97	3.31	1.49	1.71	1.35	3.18	2.70
Means (L61/L76)	3.84	2.49	4.63	2.65	2.53	1.95	4.44	3.52
	Agronomic water-use efficiency (WUE)				Nitrogen use efficiency (NUE)
	kg of grains / Liters of water (kg L ^-1)				kg of grains / kg of N
Experimental means	9.67	9.06	11.19	7.63	10.69	19.18	19.88	38.35
L61/L76	11.46	11.45	15.65	13.58	15.81	27.70	27.75	50.00

^*
^* Significant at 0.01 probability by the F test.

Table 2 Means of the agronomic and morphological traits of the UENF WS01 popcorn hybrid under ideal cultivation conditions (IC), water stress (WS), and low nitrogen (N) availability

Traits	IC	WS	N
Male flowering (days after sowing)	61	60	60
Female flowering (days after sowing)	62	63	61
Plant height (m)	1.75	1.40	1.74
Ear Height (m)	1.05	0.89	1.01
Prolificity (ears/plant)	1.56	1.10	1.52
Ear diameter (mm)	35.33	31.47	-
Ear length (cm)	13.83	12.21	-
100-grain weight (g)	15.31	13.45	11.47
Popping expansion (mL g^-1)	31.86	33.11	31.94

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Crop Breeding and Applied Biotechnology Universidade Federal de Viçosa, Departamento de Fitotecnia, 36570-000 Viçosa - Minas Gerais/Brasil, Tel.: (55 31)3899-2611, Fax: (55 31)3899-2611 - Viçosa - MG - Brazil
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UENF WS01: popcorn hybrid with water use efficiency for the State of Rio de Janeiro

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[1] * E-mail: valter_jario@hotmail.com