Seed dormancy and germination in tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.)
Tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) fruits enjoy high consumption and commercialization in Colombia. Seed dormancy has been reported for both species, and their propagation depends on seeds. The optimal germination conditions for these species are not well known. Th...
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| Format: | Online |
| Language: | eng |
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Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC
2019
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| Online Access: | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/10130 |
| _version_ | 1801706284742868992 |
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| author | Torres-González, Alba Marina |
| author_facet | Torres-González, Alba Marina |
| author_sort | Torres-González, Alba Marina |
| collection | OJS |
| description | Tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) fruits enjoy high consumption and commercialization in Colombia. Seed dormancy has been reported for both species, and their propagation depends on seeds. The optimal germination conditions for these species are not well known. Thus, the temperature regimes for the seed germination were based on the mean, minimum and maximum temperatures of the locations where the crops were grown. Germination tests were carried out in four replicates of 50 seeds each on Petri dishes for both crops. Six temperature conditions and four pre-treatments were evaluated to break the seed dormancy for several seed lots. S. betaceum and S. quitoese exhibited shallow seed dormancy, and less dormancy was detected in the commercialized cultivars, such as S. betaceum cv. Tamarillo and S. quitoense (i.e. common lulo). For both species, the most recently harvested seeds had more germination capacity than the seeds stored for several months at a low seed moisture content (4%) and low storage temperature (20°C). The seed dormancy of S. betaceum and S. quitoense was broken successfully by applying GA3 (2,000 mg L-1) or alternating temperatures (e.g. 25/15°C). However, both treatments at the same time did not provide an additional benefit to promote seed germination. Potassium nitrate (1%) promoted seed germination in the S. betaceum seeds at both constant and alternating temperatures and in the S. quitoense seeds, only when alternating temperatures were applied. The application of GA3 increased the rate of germination more than KNO3 for both species at all temperatures. Using any of these treatments would work well to break seed dormancy in S. betaceum and S. quitoense, and the most convenient option could be selected depending upon budget and other resources. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-10130 |
| institution | Revista Colombiana de Ciencias Hortícolas |
| language | eng |
| publishDate | 2019 |
| publisher | Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-101302020-08-14T05:09:32Z Seed dormancy and germination in tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) Latencia y germinación de semillas de tomate de árbol (Solanum betaceum Cav.) y lulo (Solanum quitoense Lam.) Torres-González, Alba Marina Gibberellic acid Potassium nitrate Seed storage Plant propagation Seed fruit dormancy plant propagation Ácido giberélico Nitrato de potasio Almacenamiento de semillas Propagación vegetal Semillas Frutas latencia propagación vegetal Tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) fruits enjoy high consumption and commercialization in Colombia. Seed dormancy has been reported for both species, and their propagation depends on seeds. The optimal germination conditions for these species are not well known. Thus, the temperature regimes for the seed germination were based on the mean, minimum and maximum temperatures of the locations where the crops were grown. Germination tests were carried out in four replicates of 50 seeds each on Petri dishes for both crops. Six temperature conditions and four pre-treatments were evaluated to break the seed dormancy for several seed lots. S. betaceum and S. quitoese exhibited shallow seed dormancy, and less dormancy was detected in the commercialized cultivars, such as S. betaceum cv. Tamarillo and S. quitoense (i.e. common lulo). For both species, the most recently harvested seeds had more germination capacity than the seeds stored for several months at a low seed moisture content (4%) and low storage temperature (20°C). The seed dormancy of S. betaceum and S. quitoense was broken successfully by applying GA3 (2,000 mg L-1) or alternating temperatures (e.g. 25/15°C). However, both treatments at the same time did not provide an additional benefit to promote seed germination. Potassium nitrate (1%) promoted seed germination in the S. betaceum seeds at both constant and alternating temperatures and in the S. quitoense seeds, only when alternating temperatures were applied. The application of GA3 increased the rate of germination more than KNO3 for both species at all temperatures. Using any of these treatments would work well to break seed dormancy in S. betaceum and S. quitoense, and the most convenient option could be selected depending upon budget and other resources. Tomate de árbol (Solanum betaceum Cav.) y lulo (Solanum quitoense Lam.) son frutas altamente consumidas y comercializadas en Colombia. Latencia de semillas ha sido reportada para ambas especies y su propagación se realiza por semillas. Las condiciones óptimas de germinación no son bien conocidas para estas especies. Así, los regímenes de temperatura para la germinación de las semillas fueron usados con base en la temperatura media, mínima y máxima de las localidades donde crecen estos cultivos. Se realizaron pruebas de germinación en cajas de Petri, con seis temperaturas y cuatro pre-tratamientos que fueron probados para romper la latencia de varios lotes de semillas. Los resultados muestran que las dos especies tienen latencia, en menor medida en los cultivares más comercializados, S. betaceum cv. Tamarillo y S. quitoense (i.e. cultivar común). Para ambas especies, las semillas recién cosechadas tuvieron mayor promoción de la germinación que las almacenadas por varios meses con bajo contenido de humedad de la semilla (4%) y baja temperatura de almacenaiento (20°C). La latencia de las semillas de S. betaceum y S. quitoense se rompió exitosamente con la aplicación de GA3 (2,000 mg L-1) o temperaturas alternadas (e.g. 25/15°C). Ambos tratamientos al mismo tiempo no tuvieron un beneficio adicional para promover la germinación. KNO3 (1%) promovió la germinación de semillas de S. betaceum a temperaturas constantes y alternadas, y de semillas de S. quitoense solamente a temperaturas alternadas. El pre-tratamiento con GA3 incrementó la velocidad de germinación más que KNO3, para ambas especies y en todas las temperaturas. Se sugiere usar cualquiera de estos tratamientos que funciona bien para romper la latencia de semillas de S. betaceum and S. quitoense, y la opción más conveniente puede ser seleccionada dependiendo del presupuesto y otros recursos. Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2019-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto Texte Testo Texto application/pdf https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/10130 10.17584/rcch.2019v13i3.10130 Revista Colombiana de Ciencias Hortícolas; Vol. 13 No. 3 (2019); 336-347 Revista Colombiana de Ciencias Hortícolas; Vol. 13 Núm. 3 (2019); 336-347 Revista Colombiana de Ciencias Hortícolas; Vol. 13 No 3 (2019); 336-347 Revista Colombiana de Ciencias Hortícolas; V. 13 N. 3 (2019); 336-347 Revista Colombiana de Ciencias Hortícolas; v. 13 n. 3 (2019); 336-347 2422-3719 2011-2173 eng https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/10130/9161 Colombia; Valle del Cauca; Cali Colombia; Valle del Cauca; Cali Colombia; Valle del Cauca; Cali Colombia; Valle del Cauca; Cali Colombia; Valle del Cauca; Cali Copyright (c) 2019 Revista Colombiana de Ciencias Hortícolas |
| spellingShingle | Gibberellic acid Potassium nitrate Seed storage Plant propagation Seed fruit dormancy plant propagation Ácido giberélico Nitrato de potasio Almacenamiento de semillas Propagación vegetal Semillas Frutas latencia propagación vegetal Torres-González, Alba Marina Seed dormancy and germination in tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) |
| title | Seed dormancy and germination in tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) |
| title_alt | Latencia y germinación de semillas de tomate de árbol (Solanum betaceum Cav.) y lulo (Solanum quitoense Lam.) |
| title_full | Seed dormancy and germination in tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) |
| title_fullStr | Seed dormancy and germination in tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) |
| title_full_unstemmed | Seed dormancy and germination in tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) |
| title_short | Seed dormancy and germination in tree tomato (Solanum betaceum Cav.) and lulo (Solanum quitoense Lam.) |
| title_sort | seed dormancy and germination in tree tomato solanum betaceum cav and lulo solanum quitoense lam |
| topic | Gibberellic acid Potassium nitrate Seed storage Plant propagation Seed fruit dormancy plant propagation Ácido giberélico Nitrato de potasio Almacenamiento de semillas Propagación vegetal Semillas Frutas latencia propagación vegetal |
| topic_facet | Gibberellic acid Potassium nitrate Seed storage Plant propagation Seed fruit dormancy plant propagation Ácido giberélico Nitrato de potasio Almacenamiento de semillas Propagación vegetal Semillas Frutas latencia propagación vegetal |
| url | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/10130 |
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