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Mostrando ítems 1-9 de 9
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Analysis of phenolic compounds in onion nectar by miniaturized off-line solid phase extraction-capillary zone electrophoresis
(Royal Society of Chemistry, 2014)Onion is an important vegetable crop which depends heavily on cross-pollinating insects for any significant increase in seed production. Nectar is the most important floral reward offered by plants. Minor components such ... -
Appetitive behavior of the honey bee Apis mellifera in response to phenolic compounds naturally found in nectars
(Company of Biologists, 2019)The honey bee is the most frequently used species in pollination services for diverse crops. In onion crops (Allium cepa L.), however, bees avoid visiting certain varieties, being attracted differently to male sterile (MS) ... -
Determination of alkaloids in onion nectar by micellar electrokinetic chromatography
(2016)Nectar is the most important floral reward offered by plants to insects. Minor components such as alkaloid compounds in nectar affect bee foraging, with great influence in seed production. CE is an advantageous tool for ... -
Direct analysis of néctar and floral volatile organic compounds in hybrid onions by HS-SPME/GC-MS: Relationship with pollination and seed production
(2016)In this study, a simple and solvent-free method using headspace solid-phase microextraction (SPME) and gas chromatography–mass spectrometry (GC–MS) was developed for determination of the volatile compounds from fresh flowers ... -
Effect of Nectar Composition on Bee Attraction for Onion Seed Production
(Nova Science Publishers, 2015-02)Onion is the second most cultivated vegetable crop in the world. Two types of onion varieties are usually grown around the world; open pollinated (OP) and first generation (F1) hybrids. Honey bees are the main pollinators ... -
Floral nectary structure, nectar presentation and morpho-anatomical analysis of male‐fertile and male‐sterile anthers in onion (Allium cepa, Amaryllidaceae) = Estructura del nectario floral, presentación del néctar y análisis morfo-anatómico de anteras de líneas androfértiles y androestériles en cebolla (Allium cepa, Amaryllidaceae)
(Sociedad Argentina de Botánica, 2023-09)Background and aims: The onion (Allium cepa var. cepa) is an allogamous species in which male-sterile lines have been developed. However, the structure of the flower and floral nectaries have only been briefly described. ... -
Nectar and flower traits of different onion male sterile lines related to pollination efficiency and seed yield of F1 hybrids
(Entomological Society of America, 2013-06)Honey bees are the main pollinators of onion crops for seed production, but owing to low attractiveness of flowers, pollination is often inadequate. Pollination problems result in low seed yields. This problem is accentuated ... -
Onion Hybrid Seed Production: Relation with Nectar Composition and Flower Traits
(2018-05)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) ... -
UV-Vis spectroscopy and chemometric: a simple method to differentiate honey, partially ripe honey and nectars
(Ediciones INTA, 2023-12)Honey is a supersaturated solution of sugars that also contains small amounts of enzymes, vitamins, phenolic compounds (e.g., flavonoids), terpenes, organic acids and hydrogen peroxide. The presence of such substances ...