Germination and dessication of Hancornia speciosa Gomes seeds
The aim of this work was describe the germination and evaluate the desiccation and reduction in desiccation-sensitivity of Hancornia speciosa Gomes seeds. Initially, we evaluated the germination characteristics and morphophysiological aspects of seedlings. The seeds in the first experiment were subj...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Federal de Uberlândia
2016-04-01
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| Series: | Bioscience Journal |
| Subjects: | |
| Online Access: | http://www.seer.ufu.br/index.php/biosciencejournal/article/view/29865 |
| _version_ | 1818907013689638912 |
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| author | Daiane Mugnol Dresch Tatiane Sanches Jeromini Silvana de Paula Quintão Scalon Rosilda Mara Mussury Tathiana Elisa Masetto Zefa Valdivina Pereira |
| author_facet | Daiane Mugnol Dresch Tatiane Sanches Jeromini Silvana de Paula Quintão Scalon Rosilda Mara Mussury Tathiana Elisa Masetto Zefa Valdivina Pereira |
| author_sort | Daiane Mugnol Dresch |
| collection | DOAJ |
| description | The aim of this work was describe the germination and evaluate the desiccation and reduction in desiccation-sensitivity of Hancornia speciosa Gomes seeds. Initially, we evaluated the germination characteristics and morphophysiological aspects of seedlings. The seeds in the first experiment were subjected to fast desiccation (activated silica gel) and slow desiccation (laboratory conditions) until the water content reached 40%, 30%, 20%, and 15% ± 2%. To reduce the desiccation sensitivity, in the second experiment, the seeds were soaked in polyethylene glycol (PEG) at potentials of -0.1 and -0.3 MPa for 120 h, with or without abscisic acid (ABA) (10-4µM), and subsequently subjected to fast desiccation until a water content of 15% was reached, based on the results from the first experiment. The seed vigor in both experiments was evaluated by the primary root protrusion tests, percentage of normal seedlings, germination speed index, length and mass (shoot, underground, and total). Seedlings of H. speciosa feature a stem-like xylopodium structure. The seeds were tolerant to water reduction up to 15% by fast desiccation and 30% by slow desiccation. Moreover, priming was not efficient in reducing the desiccation sensitivity of H. speciosa seeds. |
| first_indexed | 2024-12-19T21:48:22Z |
| format | Article |
| id | doaj.art-c633fadc3c844298b7b3612dd9c69609 |
| institution | Directory Open Access Journal |
| issn | 1981-3163 |
| language | English |
| last_indexed | 2024-12-19T21:48:22Z |
| publishDate | 2016-04-01 |
| publisher | Universidade Federal de Uberlândia |
| record_format | Article |
| series | Bioscience Journal |
| spelling | doaj.art-c633fadc3c844298b7b3612dd9c696092022-12-21T20:04:28ZengUniversidade Federal de UberlândiaBioscience Journal1981-31632016-04-0132210.14393/BJ-v32n2a2016-2986529865Germination and dessication of Hancornia speciosa Gomes seedsDaiane Mugnol Dresch0Tatiane Sanches Jeromini1Silvana de Paula Quintão Scalon2Rosilda Mara Mussury3Tathiana Elisa Masetto4Zefa Valdivina Pereira5Universidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosThe aim of this work was describe the germination and evaluate the desiccation and reduction in desiccation-sensitivity of Hancornia speciosa Gomes seeds. Initially, we evaluated the germination characteristics and morphophysiological aspects of seedlings. The seeds in the first experiment were subjected to fast desiccation (activated silica gel) and slow desiccation (laboratory conditions) until the water content reached 40%, 30%, 20%, and 15% ± 2%. To reduce the desiccation sensitivity, in the second experiment, the seeds were soaked in polyethylene glycol (PEG) at potentials of -0.1 and -0.3 MPa for 120 h, with or without abscisic acid (ABA) (10-4µM), and subsequently subjected to fast desiccation until a water content of 15% was reached, based on the results from the first experiment. The seed vigor in both experiments was evaluated by the primary root protrusion tests, percentage of normal seedlings, germination speed index, length and mass (shoot, underground, and total). Seedlings of H. speciosa feature a stem-like xylopodium structure. The seeds were tolerant to water reduction up to 15% by fast desiccation and 30% by slow desiccation. Moreover, priming was not efficient in reducing the desiccation sensitivity of H. speciosa seeds.http://www.seer.ufu.br/index.php/biosciencejournal/article/view/29865mangabadrying ratepolyethylene glycolabscisic acid |
| spellingShingle | Daiane Mugnol Dresch Tatiane Sanches Jeromini Silvana de Paula Quintão Scalon Rosilda Mara Mussury Tathiana Elisa Masetto Zefa Valdivina Pereira Germination and dessication of Hancornia speciosa Gomes seeds Bioscience Journal mangaba drying rate polyethylene glycol abscisic acid |
| title | Germination and dessication of Hancornia speciosa Gomes seeds |
| title_full | Germination and dessication of Hancornia speciosa Gomes seeds |
| title_fullStr | Germination and dessication of Hancornia speciosa Gomes seeds |
| title_full_unstemmed | Germination and dessication of Hancornia speciosa Gomes seeds |
| title_short | Germination and dessication of Hancornia speciosa Gomes seeds |
| title_sort | germination and dessication of hancornia speciosa gomes seeds |
| topic | mangaba drying rate polyethylene glycol abscisic acid |
| url | http://www.seer.ufu.br/index.php/biosciencejournal/article/view/29865 |
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