Physiological quality of seed and seedling performance of crambe genotypes under water stress
| Autor: | Hugo Tiago Ribeiro Amaro, Andréia Márcia Santos de Souza David, Fernando H. B. Machado, Josiane Cantuária Figueiredo, Lucas Vinícius de Souza Cangussú |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Environmental Engineering Polyethylene glycol 01 natural sciences chemistry.chemical_compound Crambe Osmotic pressure Dry matter Cultivar lcsh:Agriculture (General) Crambe abyssinica Hoechst Completely randomized design biology germinação 04 agricultural and veterinary sciences biology.organism_classification lcsh:S1-972 Horticulture germination Agronomy chemistry Germination Seedling polyethylene glycol polietilenoglicol 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Revista Brasileira de Engenharia Agrícola e Ambiental-Agriambi, Vol 21, Iss 3, Pp 175-179 Revista Brasileira de Engenharia Agrícola e Ambiental v.21 n.3 2017 Revista Brasileira de Engenharia Agrícola e Ambiental Universidade Federal de Campina Grande (UFCG) instacron:UFCG |
| ISSN: | 1415-4366 |
| DOI: | 10.1590/1807-1929/agriambi.v21n3p175-179 |
| Popis: | Water stress is a condition that causes physiological changes in different species and even genotypes of the same species. One of the osmotic agents most used to simulate this condition is polyethylene glycol 6000. The aim of this study was to evaluate the effects of water stress on the physiological quality of seeds and performance of seedlings of crambe genotypes. A completely randomized design was used, in a factorial scheme with two genotypes (one cultivar and one line) and five osmotic potentials simulated with aqueous solutions of polyethylene glycol 6000 (control = 0, -0.25, -0.50, -1.0, -1.50 MPa), with four replicates of 50 seeds per treatment. The effects of the treatments were evaluated by means of germination, first count, germination speed index and fresh and dry matter of seedlings. The physiological quality of seeds and the performance of crambe seedlings are negatively affected under water stress from -0.25 MPa on. Seeds of the genotype FMSCR 1101 have greater tolerance to drought stress, regardless of the osmotic potential used. |
| Databáze: | OpenAIRE |
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