Overcoming seed dormancy of junglerice (Echinochloa colona)
Junglerice (Echinochloa colona L. Link) seed dormancy can persist 8 months after harvest and, once overcome, seeds can germinate over a long period of time. Light or high temperatures could overcome seed dormancy, while the effects of seed coat softening and nitrate addition are not well known. This...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Universidad de Concepción (Chile)
2023
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/14153 https://revistas.udec.cl/index.php/chjaas/article/view/7247 https://doi.org/10.29393/CHJAA38-15OSGH20015 |
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| author | Picapietra, Gabriel Acciaresi, Horacio Abel |
| author_browse | Acciaresi, Horacio Abel Picapietra, Gabriel |
| author_facet | Picapietra, Gabriel Acciaresi, Horacio Abel |
| author_sort | Picapietra, Gabriel |
| collection | INTA Digital |
| description | Junglerice (Echinochloa colona L. Link) seed dormancy can persist 8 months after harvest and, once overcome, seeds can germinate over a long period of time. Light or high temperatures could overcome seed dormancy, while the effects of seed coat softening and nitrate addition are not well known. This study aimed to determine the germinative response, persistence and treatments to overcome seed dormancy of junglerice. Seed samples were taken from a monoculture crop (soybean, S1) and a 3-yr rotation crop (wheat/soybean-corn-soybean, S2). Every 3 wk for 30 wk, hot-water washed (WW) seeds were evaluated. After 33 wk of storage, the effects of potassium nitrate (KNO3), dehulling (DE), WW, previous water immersion (IM) and exogenous gibberellic acid (GA) were evaluated in three different experiments (pre-germinative tests with KNO3, DE and WW; KNO3 and IM; and GA). The results showed that seed dormancy persisted until 21 wk. From 21 to 30 wk, germination response increased by 25 and 59 % on WW-treated seeds from S1 and S2, respectively. After 33 wk of storage, only KNO3 was significantly higher (p < 0.05), with 88 and 126 % increases in seed germination in S1 and S2, respectively. These results indicate that junglerice seed dormancy is not related to glumes. Hot water improves the germinative response probably due to an acceleration in post-harvest maturation, while KNO3 is a positive regulator to overcome seed dormancy. |
| format | Artículo |
| id | INTA14153 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Universidad de Concepción (Chile) |
| publisherStr | Universidad de Concepción (Chile) |
| record_format | dspace |
| spelling | INTA141532023-03-06T17:58:05Z Overcoming seed dormancy of junglerice (Echinochloa colona) Picapietra, Gabriel Acciaresi, Horacio Abel Malezas Echinochloa colona Germinación Semilla Dormición Salida de la Latencia Métodos de Aplicación Weeds Germination Seeds Dormancy Dormancy Breaking Application Methods Hot-water Washing Water Immersion Junglerice (Echinochloa colona L. Link) seed dormancy can persist 8 months after harvest and, once overcome, seeds can germinate over a long period of time. Light or high temperatures could overcome seed dormancy, while the effects of seed coat softening and nitrate addition are not well known. This study aimed to determine the germinative response, persistence and treatments to overcome seed dormancy of junglerice. Seed samples were taken from a monoculture crop (soybean, S1) and a 3-yr rotation crop (wheat/soybean-corn-soybean, S2). Every 3 wk for 30 wk, hot-water washed (WW) seeds were evaluated. After 33 wk of storage, the effects of potassium nitrate (KNO3), dehulling (DE), WW, previous water immersion (IM) and exogenous gibberellic acid (GA) were evaluated in three different experiments (pre-germinative tests with KNO3, DE and WW; KNO3 and IM; and GA). The results showed that seed dormancy persisted until 21 wk. From 21 to 30 wk, germination response increased by 25 and 59 % on WW-treated seeds from S1 and S2, respectively. After 33 wk of storage, only KNO3 was significantly higher (p < 0.05), with 88 and 126 % increases in seed germination in S1 and S2, respectively. These results indicate that junglerice seed dormancy is not related to glumes. Hot water improves the germinative response probably due to an acceleration in post-harvest maturation, while KNO3 is a positive regulator to overcome seed dormancy. EEA Pergamino Fil: Picapietra, Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Malezas; Argentina Fil: Picapietra, Gabriel. Universidad Nacional del noroeste de la Provincia de Buenos Aires. Escuela de Ciencias Agrarias, Naturales y Ambientales (ECANA); Argentina Fil: Acciaresi, Horacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Sección Malezas; Argentina Fil: Acciaresi, Horacio. Provincia de Buenos Aires. Comisión de Investigaciones Científicas (CIC); Argentina 2023-03-06T17:53:38Z 2023-03-06T17:53:38Z 2022-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/14153 https://revistas.udec.cl/index.php/chjaas/article/view/7247 0719-3882 0719-3890 (on line) https://doi.org/10.29393/CHJAA38-15OSGH20015 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Universidad de Concepción (Chile) Chilean Journal of Agricultural & Animal Sciences 38 (2) : 154-163. (may - august 2022) |
| spellingShingle | Malezas Echinochloa colona Germinación Semilla Dormición Salida de la Latencia Métodos de Aplicación Weeds Germination Seeds Dormancy Dormancy Breaking Application Methods Hot-water Washing Water Immersion Picapietra, Gabriel Acciaresi, Horacio Abel Overcoming seed dormancy of junglerice (Echinochloa colona) |
| title | Overcoming seed dormancy of junglerice (Echinochloa colona) |
| title_full | Overcoming seed dormancy of junglerice (Echinochloa colona) |
| title_fullStr | Overcoming seed dormancy of junglerice (Echinochloa colona) |
| title_full_unstemmed | Overcoming seed dormancy of junglerice (Echinochloa colona) |
| title_short | Overcoming seed dormancy of junglerice (Echinochloa colona) |
| title_sort | overcoming seed dormancy of junglerice echinochloa colona |
| topic | Malezas Echinochloa colona Germinación Semilla Dormición Salida de la Latencia Métodos de Aplicación Weeds Germination Seeds Dormancy Dormancy Breaking Application Methods Hot-water Washing Water Immersion |
| url | http://hdl.handle.net/20.500.12123/14153 https://revistas.udec.cl/index.php/chjaas/article/view/7247 https://doi.org/10.29393/CHJAA38-15OSGH20015 |
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