Onion hybrid seed production: Relation with nectar composition and flower traits
| Autor: | Claudio R. Galmarini, María Fernanda Silva, Verónica C. Soto, Cristian A. Caselles |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Crops
Agricultural 0106 biological sciences CROP POLLINATION Plant Nectar Pollination Argentina SEED PRODUCTION Flowers Biology 010603 evolutionary biology 01 natural sciences Horticultura Viticultura Open pollination Pollinator Onions Animals Nectar Cultivar Hybrid ALLIUM CEPA L MALE STERILITY Ecology General Medicine Bees biology.organism_classification Hybrid seed Horticulture CIENCIAS AGRÍCOLAS Insect Science Seeds Allium Agricultura Silvicultura y Pesca 010606 plant biology & botany |
| Popis: | Onion (Allium cepa L.) is one of the main vegetable crops. Pollinators are required for onion seed production, being honeybees the most used. Around the world, two types of onion varieties are grown: open pollinated (OP) and hybrids. Hybrids offer numerous advantages to growers, but usually have lower seed yields than OP cultivars, which in many cases compromise the success of new hybrids. As pollination is critical for seed set, understanding the role of floral rewards and attractants to pollinator species is the key to improve crop seed yield. In this study, the correlation of nectar-analyzed compounds, floral traits, and seed yield under open field conditions in two experimental sites was determined. Nectar composition was described through the analysis of sugars, phenol, and alkaloid compounds. Length and width of the style and tepals of the flowers were measured to describe floral traits. Floral and nectar traits showed differences among the studied lines. For nectar traits, we found a significant influence of the environment where plants were cultivated. Nonetheless, flower traits were not influenced by the experimental sites.The OP and the male-sterile lines (MSLs) showed differences in nectar chemical composition and floral traits. In addition, there were differences between and within MSLs, some of which were correlated with seed yield, bringing the opportunity to select the most productive MSL, using simple determinations of morphological characters like the length of the style or tepals size. Fil: Soto Vargas, Verónica Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina Fil: Caselles, Cristian A. Monsanto; Argentina Fil: Silva, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina Fil: Galmarini, Claudio Romulo. Instituto Nacional de Tecnología Agropecuaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina |
| Databáze: | OpenAIRE |
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