Does nitric oxide protect Eucalyptus urophylla seeds under salt stress conditions?

Author:

Pereira Thalita Maciel1ORCID,Santos Heloisa Oliveira dos1ORCID,Cunha Neto Antonio Rodrigues da1ORCID,Pelissari Fabieli2ORCID,Pereira Wilson Vicente1ORCID,Melo Lucas Amaral de1ORCID

Affiliation:

1. Universidade Federal de Lavras, Brazil

2. Universidade Federal do Mato Grosso, Brazil

Abstract

Abstract: The germination response of seeds under artificial stress conditions is a tool for better understanding of the survival and adaptation ability of species under natural stress conditions. The aims of this study were to evaluate the protective effect of nitric oxide during germination as well as seed vigor and seedling development of Eucalyptus urophylla under salt stress conditions. The experimental design was completely randomized, with five replications, in a 3 × 3 + 1 factorial arrangement, with three priming factors [water, sodium nitroprusside (SNP), and potassium nitrate (KNO3)], three germination conditions (distilled water, and the water potentials of -0.6 and -1.2 MPa), and an additional control treatment (unprimed seeds). The following determinations were made: germination count at seven and fourteen days, germination speed index, primary root length, shoot length, and total length. SNP protects seeds, leading to a higher percentage of germination, as well as greater root growth and total seedling size, whereas KNO3 is not effective in protecting seeds that suffer from salt stress, which affects their physiological and morphological characteristics. E. urophylla seeds are sensitive to salt stress, and physiological priming with SNP leads to an increase in the percentage of germination, vigor, and seedling development under salinity conditions.

Publisher

FapUNIFESP (SciELO)

Subject

Agronomy and Crop Science

Reference29 articles.

1. ANUÁRIO ESTATÍSTICO DA ASSOSSIAÇÃO DE PRODUTORES DE FLORESTAS PLANTADAS DO BRASIL

2. Óxido nítrico na germinação de sementes de baixo vigor de Dalbergia nigra;ATAÍDE G.M.;Revista de Ciências Agrárias,2015

3. Influência do estresse hídrico simulado com manitol na germinação de sementes e crescimento de plântulas de canola;ÁVILA M.R.;Revista Brasileira de Sementes,2007

4. Seed germination and initial growth of quinoa seedlings under water and salt stress;BARBIERI G.F.;Journal of Agricultural Science,2019

5. Abiotic Stress Physiology of Horticultural Crops;BHANUPRAKASH K.,2016

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