Pollen load
Pollen Load and Flower Constancy of Three species of Stingless bees (Hymenoptera, Apidae, Meliponinae)
... the pollen load and flower constancy in Tetragonula laeviceps, Lepidotrigona terminata, and Heterotrigona ...(4:1). Pollen loads on each individual of stingless bees was counted by ...of ...
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MEAN POLLEN CONCENTRATION AND PERCENTAGE CONTRIBUTION OF DIFFERENT POLLEN TYPES IN THE AIR OF FIROZABAD DISTRICT OF UTTAR PRADESH
... A pollen load have been monitored for the period of July 2007 to June ...the pollen spectrum. Fewer more arboreal pollen have been recorded at the urban site as compared to semi urban ...
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Ants contribute to pollination but not to reproduction in a rare calcareous grassland forb
... of pollen attached to the cuticles of foraging ants was assessed using the fluorochromatic procedure (FCR) according to Heslop-Harrison, Heslop-Harrison & Shivanna ...carrying pollen were allowed to ...
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Regulation of Pollen Foraging Activity in Apis mellifera Africanized Honeybees Colonies
... high pollen reserves presented higher pollen entry due to large amount of foragers honeybees, 15% more, but managed to reduce pollen in the colony area decreasing the size of pollen ...
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Insect floral visitors and their behaviour in hybrid carrot seed crops in Tasmania
... high pollen loads on their body and that were an abundant, consistent and frequent visitor to carrot inflorescences within and between ...the pollen load and visitation data suggest, with more recent ...
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Native bees pollinate tomato flowers and increase fruit production
... some pollen-gatherer bees that vibrate their indirect flight muscles to obtain that floral ...greater pollen load on their stigma than unvisited ...great pollen load increases fruit ...
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Pollination and fertilisation
... the pollen grains that have landed on the stigmas (woolly socks), look at the letter on each pollen ...If pollen grains on the sock have a different letter from the flower on which they have landed, ...
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FERTILIZATION ABILITY OF MAIZE POLLEN GRAINS. I. POLLEN SOURCES
... Since Ky49xKy27 was not only the female parent but also the source of y pollen used in each combina- tion with each yellow single cross on each date, the percentage of white k[r] ...
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GENETIC CONSEQUENCES OF THE COUPLET CYTOPLASMIC POLLEN STERILITY AND POLLEN MIGRATION
... The dynamics of population change under these conditions are influenced by the cytoplasmic composition of the recipient population.-Although genetic diversification b[r] ...
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A Palynological Assessment of Honey Samples from Delta State, Nigeria
... two pollen types belonging to twenty eight families were identified in this ...were pollen of varying shapes, sizes and morphological features, suggesting that the honey samples are ...1,414,264 ...
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Four Historical Landscapes of the Merchant’s House Museum Backlot, Manhattan Island, New York, Identified through Pollen Analysis
... secondary pollen types mostly decline or level off as the chestnut-pollen contribution increases as one proceeds upward in the zone, and are probably products of release and reapplication of statistical ...
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Breakdown of gametophytic self-incompatibility in subdivided populations
... combination of pollen dispersal rate and the local and global diversity of SI alleles whose interaction is potentially complex and has not been explored yet. Second, population subdivision adds complexity to the ...
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The history of the vegetation and climate in southern Tasmania since the late Pleistocene (ca 13 000 0 BP
... TO enable as objective an interpretation as possible of this fossil pollen data, the present-day pollen rains across Tasmania were studied via surface sampling and pollen trapping progra[r] ...
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Basic Bee Biology Made Simple (MoCo).pdf
... • Pollen is the bees' main source of protein, and is required for muscle growth in brood and young adult bees. • Bees obtain pollen from flowers or from pollen stored in the combs[r] ...
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Impacts of climate and humans on the vegetation in northwestern Turkey: palynological insights from Lake Iznik since the Last Glacial
... Mediterranean pollen records generally document vege- tation changes in response to DO events, DO-2 ...Philippon pollen record indicates the spread of pines in response to DO-2 (Müller et ...Iznik’s ...
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Arabidopsis hapless Mutations Define Essential Gametophytic Functions
... haploid pollen grain (male gametophyte) extends a pollen tube that carries two sperm cells within its cytoplasm to the embryo ...ovary. Pollen tube migration depends on a series of long-range signals ...
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Cytoplasmic Ca2+ changes dynamically during the interaction of the pollen tube with synergid cells
... pollen tubes growing through the style and towards the synergid cells during micropylar guidance was imaged with a Zeiss Axio Observer inverted microscope equipped with a Xenon lamp, an EM-CCD Evolve 512 camera ...
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A Selfish Gene Governing Pollen-Pistil Compatibility Confers Reproductive Isolation Between Maize Relatives
... Reduced pollen transmission of Tcb1 in crosses to maize: Pollen carrying the introgressed Tcb1-s segment fertilizes tcb1 tcb1 maize less efficiently than tcb1 ...on pollen trans- mission only ...
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09_Lecture_Presentation-forclass.ppt
... – Parental generation: plants with purple flowers, long pollen crossed to plants with red flowers, round. pollen[r] ...
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Vegetation history of central Chukotka deduced from permafrost paleoenvironmental records of the El’gygytgyn Impact Crater
... the pollen spectra, shrub alder, dwarf birch, and willows grew in the lake ...larch pollen in the spectra (up to ...lacustrine pollen records (Lozhkin et ...larch pollen at all and show low ...
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