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17 results for “Pollen”
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Research ArticleOpen accessEvery word in the titleAn Investigation of Tradeoffs in Herbicide Resistant Brassica rapa: Effects on Pollen and Ovule Production, Biomass and DevelopmentRobin Bingham, Pamela King, Andrew G. KeckFor decades, herbicides have been used to control weeds and increase crop yields, a practice resulting in a growing number of weeds that are herbicide resistant. Like the problem of antibiotic resistance for medicine, herbicide resistant weeds present a significant agricultural challenge. To meet this challenge, we need management strategies informed by a more complete understanding of the biology of … …American Journal of Environmental Sciences, Vol. 13, Issue 1 · 20 Jan 2017 · 7,824 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStructure, Ultrastructure of the Anther, Pollen Microsporogenesis and Morphology of Pollen Grains of Two Populations of Lygeum spartum L. in AlgeriaKatia Abdeddaim-Boughanmi, Meriem Kaid-HarcheProblem statement: The Lygeum spartum L. represented by a single species occupies several regions of the Mediterranean basin. This plant plays an important ecological role in the fight against desertification and economic development in the manufacture of paper pulp. Approach: However, the cytogenetic studies in mitosis in this species revealed the existence of two ploidy levels: 2n = 40 among … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 3 · 30 Sep 2009 · 8,514 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePollen Flavonoid/Phenolic Acid Composition of Four Species of Cactaceae and its Taxonomic SignificanceNorma Almaraz-Abarca, MarÍa G. Campos, Elí A. Delgado-Alvarado et al.The pollen flavonoid/phenolic acid composition of 14 individual of Stenocactus multicostatus subsp. zacatecasensis (Britton et Rose) U. Guzmán et Vázquez-Benitez, comb. et stat. nov., 11 of Echinocereus enneacanthus Engelmann, 8 of Echinocereus pectinatus (Scheidweiler) Engelmann and 12 of Mammillaria heyderi sensu lato (all belonging to Cactaceae) was analyzed by HPLC/DAD with the aim of determining the role of pollen profiles … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 3 · 30 Sep 2008 · 8,450 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePOLLEN-FRUIT SYNDROMES: A CASE WITH BIRCH-APPLE-CARROT ASSOCIATIONJ. Minov, J. Karadzinska-Bislimovska, S. Stoleski et al.Subjects with sensitivities to certain pollen can experience oral or systemic allergic symptoms associated with ingestion of various fruits, vegetables and nuts. In this case report a birch-apple-carrot association in 23-year-old man suffering from pollinosis who experienced few episodes of oral allergy syndrome, generalized urticaria and bronchospasm immediately time after ingestion of fresh and cooked apple and carrot is presented. … …American Journal of Immunology, Vol. 10, Issue 2 · 10 May 2014 · 7,168 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleTarget Identification in Ory S1 Pollen Protein Allergen from Oryza sativa in the Course of Construction of Hypoallergenic VaccinesRuchi Sharma, A. K. SinghProblem statement: Recombinant-based approaches are mostly focused on genetic modification of allergens to produce molecules with reduced allergenic activity and conserved antigenicity, such as hypoallergens. Recombinant allergens represent promising tools for diagnosis and therapy of type I allergy. This approach was probably feasible with every allergen with known amino acid sequence. Approach: The primary aim of this study was to … …American Journal of Infectious Diseases, Vol. 5, Issue 2 · 30 Jun 2009 · 7,438 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSELF-INCOMPATIBILITY AND EFFECT OF RECIPROCAL CROSS AND OPEN POLLINATION ON FRUIT SET AND FRUIT CHARACTERISTIC IN JORDANIAN ALMOND LANDRACESS. J. OwaisLimited studies were carried out to identify self- and cross-compatibility relationships among Jordanian almond landraces. Therefore, this study aimed at studying the level of self-incompatibility and the effect of cross and open pollination on fruit set and shell, nut and kernel related traits in almond. To achieve this objective, field experiments were carried out during 2012 and 2013 cropping season … …American Journal of Agricultural and Biological Sciences, Vol. 9, Issue 3 · 30 Aug 2014 · 7,382 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPalynological Studies of Sediments from North Chioma-3 Well, Niger Delta and its Palaeoenvironmental InterpretationsOlugbenga Ebenezer Ige, Kalyani Datta, Kanak Sahai, Krishna Kumar RawatProblem statement: The Niger Delta Nigeria stands among the world's best-studies delta complexes but its superficial deposits are among the poorest known publicity. In spite of continuous oil prospecting production in the area, there is still a paucity of published information and data on the palynology of the Niger Delta. This study aimed at reconstructing the palaeoenvironments of the Niger … …American Journal of Applied Sciences, Vol. 8, Issue 12 · 10 Oct 2011 · 7,884 accessesView PDFCite
Research ArticleOpen accessIn the keywordsProfiling of Phenolic Compounds of Somatic and Reproductive Tissues of Agave Durangensis Gentry (Agavaceae)Norma Almaraz-Abarca, Elí Amanda Delgado-Alvarado, Vicente Hernández-Vargas et al.Problem statement: In Durango, Mexico, mescal is elaborated from wild plants of Agave durangensis. This species shows a high morphological variability within and among populations, what makes its taxonomic delimitation a hard task. Approach: In this study the pollen and foliar phenolic compositions of Agave durangensis were analyzed by HPLC/DAD with the aim of determining the significance of phenol profiles … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 7,740 accessesView PDFCite
Research ArticleOpen accessIn the abstractSpikelets Fertility and Quality of Local Upland Rice (Oryza sativa L.) Seeds Due to High Temperature at Various StagesRisky Ridha, Ellis Nihayati et al.Stress from high temperatures is one of the factors that restrict rice plant growth and development. Rice generative stage sensitivity to high temperatures is well established, but its vegetative stage sensitivity is more uncertain. To identify high-temperature tolerance traits in the vegetative and generative stages, four local upland rice genotypes were tested under high-temperature stress treatment (32-36°C) during the vegetative … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 22 Jul 2024 · 5,009 accessesView PDFCite
Review ArticleOpen accessIn the abstractThe Exposure of Pesticides to Honeybees: A Global Threat to Food SecurityHalima Sadia, Pratik Raj Karki, Mansura Afroz et al.The pivotal role of honeybees as global pollinators underscores their significance in ecological and agricultural systems. However, the beekeeping industry faces a significant challenge due to the improper utilization of pesticides, resulting in adverse effects on honeybee populations. This comprehensive review endeavors to investigate the toxicity of pesticides to honeybees, examining the various routes of exposure. Furthermore, it aims to … …OnLine Journal of Biological Sciences, Vol. 24, Issue 2 · 20 Jan 2024 · 6,058 accessesView PDFCite