Preliminary study of water requirements in onion (Allium cepa L.) cv. Valcatorce in relation to seed production
The effect of water stress applied in different periods of the life cycle of onion (Allium cepa L.) (cv. Valcatorce) on seed production of crops managed by the "seed-bulb-seed" technique was evaluated. Drought effects were obtained by interruption of irrigation during the following phenolo...
| Main Authors: | , , |
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| Format: | Online |
| Language: | spa |
| Published: |
Facultad de Ciencias Agropecuarias
1993
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| Subjects: | |
| Online Access: | https://revistas.unc.edu.ar/index.php/agris/article/view/2422 |
| _version_ | 1834859111094681600 |
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| author | Borgo, R. Stahlschmidt, O. M. Tizio, R. M. |
| author_facet | Borgo, R. Stahlschmidt, O. M. Tizio, R. M. |
| author_sort | Borgo, R. |
| collection | Portal de Revistas |
| description | The effect of water stress applied in different periods of the life cycle of onion (Allium cepa L.) (cv. Valcatorce) on seed production of crops managed by the "seed-bulb-seed" technique was evaluated. Drought effects were obtained by interruption of irrigation during the following phenological phases: 1) Vegetative, from plant emergence to just prior elongation of flower stalks; 2) Flower stalk growth; 3) Fruit growth and 4) Control, normally irrigated according to the technique used in the region of La Consulta, Mendoza, Argentina. The following parameters were evaluated: a. Umbels per plant; b. Flowers per umbel; c. Seed number per umbel; d. Foliage dry weight; e. Weight of 1000 seeds. Seed yield per hectare and seed number per flower were also calculated. Water potentials (in MPa) reached by plants at the end of each treatment were: in 1) -1.26; in 2) -0.9; in 3) -1.02 and in 4) -0.28 to -0.60 MPa. The results show that drought during the vegetative period and growth of flower stalks drastically affected seed yield and its components. |
| format | Online |
| id | oai:ojs.revistas.unc.edu.ar:article-2422 |
| institution | Universidad Nacional de Cordoba |
| language | spa |
| publishDate | 1993 |
| publisher | Facultad de Ciencias Agropecuarias |
| record_format | ojs |
| spelling | oai:ojs.revistas.unc.edu.ar:article-24222024-10-09T13:15:16Z Preliminary study of water requirements in onion (Allium cepa L.) cv. Valcatorce in relation to seed production Estudio preliminar de requerimientos hídricos en cebolla (Allium cepa L.) cv. Valcatorce en relación a la producción de semilla Borgo, R. Stahlschmidt, O. M. Tizio, R. M. orion seed yield water stress critical periods phenelogical phases irrigation cebolla semilla rendimiento estrés hídrico periodos críticos fases fenológicas riesgo The effect of water stress applied in different periods of the life cycle of onion (Allium cepa L.) (cv. Valcatorce) on seed production of crops managed by the "seed-bulb-seed" technique was evaluated. Drought effects were obtained by interruption of irrigation during the following phenological phases: 1) Vegetative, from plant emergence to just prior elongation of flower stalks; 2) Flower stalk growth; 3) Fruit growth and 4) Control, normally irrigated according to the technique used in the region of La Consulta, Mendoza, Argentina. The following parameters were evaluated: a. Umbels per plant; b. Flowers per umbel; c. Seed number per umbel; d. Foliage dry weight; e. Weight of 1000 seeds. Seed yield per hectare and seed number per flower were also calculated. Water potentials (in MPa) reached by plants at the end of each treatment were: in 1) -1.26; in 2) -0.9; in 3) -1.02 and in 4) -0.28 to -0.60 MPa. The results show that drought during the vegetative period and growth of flower stalks drastically affected seed yield and its components. Se evaluó el efecto de déficit hídricos impuestos en distintos periodos del ciclo vegetativo de la cebolla (Allium cepa L.) cv Valcatorce, en relación al rendimiento en semilla obtenida por el método "semilla-bulbo-semilla". Los déficits hídricos se impusieron por suspensión del riego durante los siguientes períodos fenológicos: 1) Vegetativo, desde la emergencia de las plantas hasta el inicio de alargamiento del escapo floral; 2) Crecimiento del escapo floral; 3) "Llenado" de semillas y 4) Testigo regado a un umbral de, aproximadamente, el 60 % de agua disponible en el suelo. Se determinó: a. número de umbelas/planta; b. flores/umbela; c. semillas/umbela; d. peso seco de follaje/planta; e. peso de mil semillas y T50; se calculó: rendimiento por hectárea, porcentaje de cuaje, número de flores/planta y número de semillas/flor. Los potenciales de agua alcanzados al final de los tratamientos fueron: en 1) -1,26 MPa; 2) -0,9 MPa y 3) -1,02 MPa. El testigo osciló entre -0,23 y -0,6 MPa. Los resultados muestran que la sequía durante el crecimiento vegetativo y de los escapos florales afectó severamente el rendimiento en semilla y sus componentes. Facultad de Ciencias Agropecuarias 1993-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unc.edu.ar/index.php/agris/article/view/2422 10.31047/1668.298x.v10.n0.2422 AgriScientia; Vol. 10 (1993); 3-9 AgriScientia; Vol. 10 (1993); 3-9 1668-298X 10.31047/1668.298x.v10.n0 spa https://revistas.unc.edu.ar/index.php/agris/article/view/2422/1369 Derechos de autor 1993 R. Borgo, O. M. Stahlschmidt, R. M. Tizio https://creativecommons.org/licenses/by-sa/4.0 |
| spellingShingle | orion seed yield water stress critical periods phenelogical phases irrigation cebolla semilla rendimiento estrés hídrico periodos críticos fases fenológicas riesgo Borgo, R. Stahlschmidt, O. M. Tizio, R. M. Preliminary study of water requirements in onion (Allium cepa L.) cv. Valcatorce in relation to seed production |
| title | Preliminary study of water requirements in onion (Allium cepa L.) cv. Valcatorce in relation to seed production |
| title_alt | Estudio preliminar de requerimientos hídricos en cebolla (Allium cepa L.) cv. Valcatorce en relación a la producción de semilla |
| title_full | Preliminary study of water requirements in onion (Allium cepa L.) cv. Valcatorce in relation to seed production |
| title_fullStr | Preliminary study of water requirements in onion (Allium cepa L.) cv. Valcatorce in relation to seed production |
| title_full_unstemmed | Preliminary study of water requirements in onion (Allium cepa L.) cv. Valcatorce in relation to seed production |
| title_short | Preliminary study of water requirements in onion (Allium cepa L.) cv. Valcatorce in relation to seed production |
| title_sort | preliminary study of water requirements in onion allium cepa l cv valcatorce in relation to seed production |
| topic | orion seed yield water stress critical periods phenelogical phases irrigation cebolla semilla rendimiento estrés hídrico periodos críticos fases fenológicas riesgo |
| topic_facet | orion seed yield water stress critical periods phenelogical phases irrigation cebolla semilla rendimiento estrés hídrico periodos críticos fases fenológicas riesgo |
| url | https://revistas.unc.edu.ar/index.php/agris/article/view/2422 |
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