Imbibition and vigor of chemically scarified Poncirus trifoliata seeds
Poncirus trifoliata is the most important rootstock in citrus production in Argentina. The seeds exhibit slow and uneven germination due to physical dormancy associated with the presence of seed coats. The objectives of this research were to select the most efficient chemical scarification procedur...
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| Format: | Artículo |
| Language: | Inglés |
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Association of Official Seed Analysts and the Society of Commercial Seed Technologists
2019
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| Subjects: | |
| Online Access: | https://stjournal.org/?s2member_file_download=/STJ_V39N1-2018/53-62%20STJ_V39N1-2018.pdf http://hdl.handle.net/20.500.12123/5494 |
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| author | Catraro, Marcela Andrea Poggi, Damián René Quadrelli, Agustín Ricardo García, Leonardo Martín Gariglio, Norberto Francisco Flores, Patricia Cecilia |
| author_browse | Catraro, Marcela Andrea Flores, Patricia Cecilia García, Leonardo Martín Gariglio, Norberto Francisco Poggi, Damián René Quadrelli, Agustín Ricardo |
| author_facet | Catraro, Marcela Andrea Poggi, Damián René Quadrelli, Agustín Ricardo García, Leonardo Martín Gariglio, Norberto Francisco Flores, Patricia Cecilia |
| author_sort | Catraro, Marcela Andrea |
| collection | INTA Digital |
| description | Poncirus trifoliata is the most important rootstock in citrus production in Argentina. The seeds exhibit slow and uneven germination due to physical dormancy associated with the presence of seed coats. The objectives of this research were to select the most efficient chemical scarification procedures for P. trifoliata seeds, and assess the effects of such procedures on imbibition and vigor. A first experiment was conducted to assess the efficiency of three chemical scarification methods and their effects on seed vigor. Vigor was determined as the germination velocity index (GVI) and mean time to maximum germination (MTMG). A second experiment was conducted to assess seed vigor and the role of seed coats in imbibition, by comparing the most effective chemical scarification method identified in the first experiment to manual removal of both seed coats and no removal of seed coats. Percentage germination, the vigor indices GVI and MTMG, and the conductivity test (CT) were determined. Scarification with sodium hypochlorite showed the best results. The imbibition curve of seeds with both seed coats reflected an exponential weight increase, seeds with only the testa removed had a linear weight increase, whereas fresh weight of seeds with both testa and tegmen removed followed a hyperbolic change. CT indicated that chemically scarified seeds had no significant increase in conductivity compared to
seeds with intact seed coats. Scarification with sodium hypochlorite was the most effective treatment for removing the testa and also improved seed vigor. |
| format | Artículo |
| id | INTA5494 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Association of Official Seed Analysts and the Society of Commercial Seed Technologists |
| publisherStr | Association of Official Seed Analysts and the Society of Commercial Seed Technologists |
| record_format | dspace |
| spelling | INTA54942019-07-12T17:28:19Z Imbibition and vigor of chemically scarified Poncirus trifoliata seeds Catraro, Marcela Andrea Poggi, Damián René Quadrelli, Agustín Ricardo García, Leonardo Martín Gariglio, Norberto Francisco Flores, Patricia Cecilia Poncitrus trifoliata Plantas para Patrón Tratamiento de Semillas Escarificación Testa Remojo Vigor de la Semilla Rootstock Crops Seed Treatment Scarification Seed Vigour Seed Soaking Poncirus trifoliata is the most important rootstock in citrus production in Argentina. The seeds exhibit slow and uneven germination due to physical dormancy associated with the presence of seed coats. The objectives of this research were to select the most efficient chemical scarification procedures for P. trifoliata seeds, and assess the effects of such procedures on imbibition and vigor. A first experiment was conducted to assess the efficiency of three chemical scarification methods and their effects on seed vigor. Vigor was determined as the germination velocity index (GVI) and mean time to maximum germination (MTMG). A second experiment was conducted to assess seed vigor and the role of seed coats in imbibition, by comparing the most effective chemical scarification method identified in the first experiment to manual removal of both seed coats and no removal of seed coats. Percentage germination, the vigor indices GVI and MTMG, and the conductivity test (CT) were determined. Scarification with sodium hypochlorite showed the best results. The imbibition curve of seeds with both seed coats reflected an exponential weight increase, seeds with only the testa removed had a linear weight increase, whereas fresh weight of seeds with both testa and tegmen removed followed a hyperbolic change. CT indicated that chemically scarified seeds had no significant increase in conductivity compared to seeds with intact seed coats. Scarification with sodium hypochlorite was the most effective treatment for removing the testa and also improved seed vigor. EEA San Pedro Fil: Catraro, Marcela Andrea. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina Fil: Poggi, Damián René. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina Fil: Quadrelli, Agustín Ricardo. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina Fil: García, Leonardo Martín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Pedro; Argentina Fil: Gariglio, Norberto Francisco. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina Fil: Flores, Patricia Cecilia. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina 2019-07-12T17:21:52Z 2019-07-12T17:21:52Z 2018 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://stjournal.org/?s2member_file_download=/STJ_V39N1-2018/53-62%20STJ_V39N1-2018.pdf http://hdl.handle.net/20.500.12123/5494 1096-0724 eng info:eu-repo/semantics/restrictedAccess application/pdf Association of Official Seed Analysts and the Society of Commercial Seed Technologists Seed technology 39 (1) : 53-62. (2018) |
| spellingShingle | Poncitrus trifoliata Plantas para Patrón Tratamiento de Semillas Escarificación Testa Remojo Vigor de la Semilla Rootstock Crops Seed Treatment Scarification Seed Vigour Seed Soaking Catraro, Marcela Andrea Poggi, Damián René Quadrelli, Agustín Ricardo García, Leonardo Martín Gariglio, Norberto Francisco Flores, Patricia Cecilia Imbibition and vigor of chemically scarified Poncirus trifoliata seeds |
| title | Imbibition and vigor of chemically scarified Poncirus trifoliata seeds |
| title_full | Imbibition and vigor of chemically scarified Poncirus trifoliata seeds |
| title_fullStr | Imbibition and vigor of chemically scarified Poncirus trifoliata seeds |
| title_full_unstemmed | Imbibition and vigor of chemically scarified Poncirus trifoliata seeds |
| title_short | Imbibition and vigor of chemically scarified Poncirus trifoliata seeds |
| title_sort | imbibition and vigor of chemically scarified poncirus trifoliata seeds |
| topic | Poncitrus trifoliata Plantas para Patrón Tratamiento de Semillas Escarificación Testa Remojo Vigor de la Semilla Rootstock Crops Seed Treatment Scarification Seed Vigour Seed Soaking |
| url | https://stjournal.org/?s2member_file_download=/STJ_V39N1-2018/53-62%20STJ_V39N1-2018.pdf http://hdl.handle.net/20.500.12123/5494 |
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