Biología floral de la quinua (Chenopodium quinoa)
The knowledge of the floral biology of quinoa (Chenopodium quinoa Willd.) is of basic importance in breeding. The project was aimed to clarify some aspects, such as percentage of flowers of different sex; time of maturity of stamens and stigmas; occurrence of floral aberrations and pollinator agents...
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| Formato: | Artículo |
| Lenguaje: | Español |
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Instituto Interamericano de Cooperación para la Agricultura (IICA)
2025
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| Acceso en línea: | https://repositorio.catie.ac.cr/handle/11554/13320 |
| _version_ | 1854967127076765696 |
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| author | Rea, J. |
| author_browse | Rea, J. |
| author_facet | Rea, J. |
| author_sort | Rea, J. |
| collection | Repositorio CATIE |
| description | The knowledge of the floral biology of quinoa (Chenopodium quinoa Willd.) is of basic importance in breeding. The project was aimed to clarify some aspects, such as percentage of flowers of different sex; time of maturity of stamens and stigmas; occurrence of floral aberrations and pollinator agents. The study was carried out in two locations in Peru, San Mateo, 3200 m high, complemented with progeny studies in Huancayo, at 3300 m.
From the germoplasm bank of the IAIAS-Andean Zone, 40 introductions from Bolivia, Peru and Ecuador were studied, checking around eleven thousand flowers. Females, hermaphrodites and male-steriles were registered, no staminate type was observed. The percentage of the different types varied according to the introductions, independently of geographic origin.
Three groups could be separated: the first consisted of six cultivars with dominant pistillate flowers and some male-sterile; in this group, gynomonoecism is prevalent and the few hermaphrodite flowers with very few polen grains indicate a tendency to male sterility. The second group, with three cultivars, has almost 100 per cent of hermaphrodite flowers. The third group is intermediate, with its 31 cultivars belonging to either the first or second group, according to the proportion of pistillated or hermaphrodite flowers.
Observations were conducted on different processes; stage of development in anthers and stigmas, protogine and proterandry. Several floral aberrations were found and the possible pollinators detected. Finally, the main characteristics of agronomic value for a breeding program are given.
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| format | Artículo |
| id | RepoCATIE13320 |
| institution | Centro Agronómico Tropical de Investigación y Enseñanza |
| language | Español |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Instituto Interamericano de Cooperación para la Agricultura (IICA) |
| publisherStr | Instituto Interamericano de Cooperación para la Agricultura (IICA) |
| record_format | dspace |
| spelling | RepoCATIE133202025-07-19T22:22:47Z Biología floral de la quinua (Chenopodium quinoa) Rea, J. Germoplasma||germplasm||germoplasma||germoplasme Perú||Peru||Peru (país)||Pérou Botánica||botany||botânica||botanique Quinua||quinoa||quinoa||quinoa Chenopodium quinoa||Chenopodium quinoa||Chenopodium quinoa||Chenopodium quinoa Flore||flowers||flor||fleur Polinizador||pollinators||polinizador||pollinisateur Sede Central The knowledge of the floral biology of quinoa (Chenopodium quinoa Willd.) is of basic importance in breeding. The project was aimed to clarify some aspects, such as percentage of flowers of different sex; time of maturity of stamens and stigmas; occurrence of floral aberrations and pollinator agents. The study was carried out in two locations in Peru, San Mateo, 3200 m high, complemented with progeny studies in Huancayo, at 3300 m. From the germoplasm bank of the IAIAS-Andean Zone, 40 introductions from Bolivia, Peru and Ecuador were studied, checking around eleven thousand flowers. Females, hermaphrodites and male-steriles were registered, no staminate type was observed. The percentage of the different types varied according to the introductions, independently of geographic origin. Three groups could be separated: the first consisted of six cultivars with dominant pistillate flowers and some male-sterile; in this group, gynomonoecism is prevalent and the few hermaphrodite flowers with very few polen grains indicate a tendency to male sterility. The second group, with three cultivars, has almost 100 per cent of hermaphrodite flowers. The third group is intermediate, with its 31 cultivars belonging to either the first or second group, according to the proportion of pistillated or hermaphrodite flowers. Observations were conducted on different processes; stage of development in anthers and stigmas, protogine and proterandry. Several floral aberrations were found and the possible pollinators detected. Finally, the main characteristics of agronomic value for a breeding program are given. Normal 2025-07-18T14:03:33Z 2025-07-18T14:03:33Z 1969-01 Artículo https://repositorio.catie.ac.cr/handle/11554/13320 openAccess es Turrialba; Vol.19, no. 1 6 páginas application/pdf Instituto Interamericano de Cooperación para la Agricultura (IICA) |
| spellingShingle | Germoplasma||germplasm||germoplasma||germoplasme Perú||Peru||Peru (país)||Pérou Botánica||botany||botânica||botanique Quinua||quinoa||quinoa||quinoa Chenopodium quinoa||Chenopodium quinoa||Chenopodium quinoa||Chenopodium quinoa Flore||flowers||flor||fleur Polinizador||pollinators||polinizador||pollinisateur Sede Central Rea, J. Biología floral de la quinua (Chenopodium quinoa) |
| title | Biología floral de la quinua (Chenopodium quinoa) |
| title_full | Biología floral de la quinua (Chenopodium quinoa) |
| title_fullStr | Biología floral de la quinua (Chenopodium quinoa) |
| title_full_unstemmed | Biología floral de la quinua (Chenopodium quinoa) |
| title_short | Biología floral de la quinua (Chenopodium quinoa) |
| title_sort | biologia floral de la quinua chenopodium quinoa |
| topic | Germoplasma||germplasm||germoplasma||germoplasme Perú||Peru||Peru (país)||Pérou Botánica||botany||botânica||botanique Quinua||quinoa||quinoa||quinoa Chenopodium quinoa||Chenopodium quinoa||Chenopodium quinoa||Chenopodium quinoa Flore||flowers||flor||fleur Polinizador||pollinators||polinizador||pollinisateur Sede Central |
| url | https://repositorio.catie.ac.cr/handle/11554/13320 |
| work_keys_str_mv | AT reaj biologiafloraldelaquinuachenopodiumquinoa |