干旱区生态环境知识资源中心(Arid): Gas exchanges and production of watermelon plant under salinity management and nitrogen fertilization

Arid

DOI	10.1590/1983-40632019v4954822
	Gas exchanges and production of watermelon plant under salinity management and nitrogen fertilization
	da Silva, Saulo Soares; de Lima, Geovani Soares; Antunes de Lima, Vera Lucia; Gheyi, Hans Raj; dos Anjos Soares, Lauriane Almeida; Moreira Lucena, Romulo Carantino
通讯作者	da Silva, SS
来源期刊	PESQUISA AGROPECUARIA TROPICAL
ISSN	1517-6398
EISSN	1983-4063
出版年	2019
卷号	49
英文摘要	In the Brazilian semi-arid region, the occurrence of water with high salt concentrations is common, making it a limiting factor for the agricultural production. The water-use salinity management strategies are an alternative capable of minimizing the deleterious effects of the stress on plants. This study aimed to evaluate the gas exchanges and production of 'Sugar Baby' watermelon plants under strategies of irrigation with saline water and nitrogen fertilization. The experiment was conducted in a randomized block design, arranged in a 6 x 2 factorial scheme, with five replicates, corresponding to six irrigation strategies with saline water applied at different phonological stages of the crop (control - irrigation with low-salinity water throughout the entire crop cycle, and salt stress at the vegetative stage, vegetative/flowering stage, flowering, fruiting and fruit maturation) and two nitrogen rates (50 % and 100 %, equivalent to 50 mg and 100 mg of N kg(-1) of soil). Two levels of water salinity were studied: one with a low and the other with a high level of electrical conductivity (0.8 dS m(-1) and 3.2 dS m(-1), respectively). The salinity of 3.2 dS m(-1) in the vegetative/flowering and fruit maturation phases decreases the stomatal opening, transpiration and CO2 assimilation rate. The level with 50 % of N provides a higher assimilation rate of CO2 and fresh fruit mass. The watermelon plant expresses a greater sensitivity to saline stress in the vegetative and flowering phases, a situation that results in a decreased fruit size.
英文关键词	Citrullus lanatus salt stress nitrogen
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000482220300012
WOS关键词	STRESS
WOS类目	Agriculture, Multidisciplinary ; Food Science & Technology
WOS研究方向	Agriculture ; Food Science & Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333761
作者单位	[da Silva, Saulo Soares; Antunes de Lima, Vera Lucia; Moreira Lucena, Romulo Carantino] Univ Fed Campina Grande, Campina Grande, PB, Brazil; [de Lima, Geovani Soares; dos Anjos Soares, Lauriane Almeida] Univ Fed Campina Grande, Pombal, PB, Brazil; [Gheyi, Hans Raj] Univ Fed Reconcavo Bahia, Cruz Das Almas, BA, Brazil
推荐引用方式 GB/T 7714	da Silva, Saulo Soares,de Lima, Geovani Soares,Antunes de Lima, Vera Lucia,et al. Gas exchanges and production of watermelon plant under salinity management and nitrogen fertilization[J],2019,49.
APA	da Silva, Saulo Soares,de Lima, Geovani Soares,Antunes de Lima, Vera Lucia,Gheyi, Hans Raj,dos Anjos Soares, Lauriane Almeida,&Moreira Lucena, Romulo Carantino.(2019).Gas exchanges and production of watermelon plant under salinity management and nitrogen fertilization.PESQUISA AGROPECUARIA TROPICAL,49.
MLA	da Silva, Saulo Soares,et al."Gas exchanges and production of watermelon plant under salinity management and nitrogen fertilization".PESQUISA AGROPECUARIA TROPICAL 49(2019).