Seed Production in Alfalfa as Related to Nectar Production and Honeybee Visitation

Pedersen, M. W.

doi:10.1086/335806

Cited by 42 publications

(27 citation statements)

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“…Along with foraging distance, the number of individual flowers visited and the spatial scale of the visits by a bee on any given foraging trip will dictate the degree of gene flow between RR and conventional alfalfa (Pedersen 1953; Teuber et al 1983; Cane 2002). Also, an alfalfa flower must be tripped in order to be successfully pollinated.…”

Section: Discussionmentioning

confidence: 99%

Foraging Range of Honey Bees,Apis mellifera, in Alfalfa Seed Production Fields

Hagler

Mueller²,

Teuber³

et al. 2011

Journal of Insect Science

108

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A study was conducted in 2006 and 2007 designed to examine the foraging range of honey bees, Apis mellifera (Hymenoptera: Apidae), in a 15.2 km2 area dominated by a 128.9 ha glyphosate-resistant Roundup Ready® alfalfa seed production field and several non-Roundup Ready alfalfa seed production fields (totaling 120.2 ha). Each year, honey bee self-marking devices were placed on 112 selected honey bee colonies originating from nine different apiary locations. The foraging bees exiting each apiary location were uniquely marked so that the apiary of origin and the distance traveled by the marked (field-collected) bees into each of the alfalfa fields could be pinpointed. Honey bee self-marking devices were installed on 14.4 and 11.2% of the total hives located within the research area in 2006 and 2007, respectively. The frequency of field-collected bees possessing a distinct mark was similar, averaging 14.0% in 2006 and 12.6% in 2007. A grand total of 12,266 bees were collected from the various alfalfa fields on seven sampling dates over the course of the study. The distances traveled by marked bees ranged from a minimum of 45 m to a maximum of 5983 m. On average, marked bees were recovered ∼ 800 m from their apiary of origin and the recovery rate of marked bees decreased exponentially as the distance from the apiary of origin increased. Ultimately, these data will be used to identify the extent of pollen-mediated gene flow from Roundup Ready to conventional alfalfa.

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Section: Discussionmentioning

confidence: 99%

Foraging Range of Honey Bees,Apis mellifera, in Alfalfa Seed Production Fields

Hagler

Mueller²,

Teuber³

et al. 2011

Journal of Insect Science

108

View full text Add to dashboard Cite

show abstract

“…Furthermore, nectar volume affects both male and female functions in other species. With few exceptions (Pleasants and Chaplin, 1983), nectar volume affects female function through pollen receipt (Thomson and Plowright, 1980;Galen and Plowright, 1985;Thomson, 1986;Mitchell and Waser, 1992) and seed set (Pedersen, 1953;Plowright and Hartling, 198 1;Zimmerman, 1983;Pyke, Day, and Wale, 1988;Real and Rathcke, 1991). The effects of nectar production on male function have been much less studied.…”

Section: Discussionmentioning

confidence: 99%

The Influence of Nectar Production on Hawkmoth Behavior, Self Pollination, and Seed Production in Mirabilis multiflora (Nyctaginaceae)

Hodges¹

1995

American Journal of Botany

115

101

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“…For crop plants, especially alfalfa (Medicago sativa), there is more evidence (Pedersen, 1953;Hawkins, 1971;Walker et al, 1974;Teuber & Barnes, 1979;Teuber et al, 1990). Nectar production rate frequently varies strongly with abiotic factors (e.g.…”

Section: Discussionmentioning

confidence: 99%

Heritability of floral traits for the perennial wild flower Penstemon centranthifolius (Scrophulariaceae): clones and crosses

1993

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Floral and reproductive traits frequently influence pollinator behaviour and plant reproductive success and are therefore thought to be under selection. However, for wild plant populations there is little information on the amount of genetic variation for such traits. We estimated broad-and narrow-sense heritability of floral and reproductive traits for two populations of the perennial wildflower Penstemon centranthifolius, using a paternal half-sib crossing design in one case, and clonal propagation of ramets from different genets in the other. In both designs, most traits were significantly heritable, including nectar production, corolla length and width, inflorescence length and total flower production. Flowering date was significantly heritable for the crosses, but not for the clones, while nectar sugar concentration was not significantly heritable in either design. Genetic correlations were in some cases strong, and in some cases differed greatly from the corresponding phenotypic correlations. These results indicate that P. centranthifolius harbours a large reservoir of genetic variance which could support an evolutionary response to phenotypic selection.

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Seed Production in Alfalfa as Related to Nectar Production and Honeybee Visitation

Cited by 42 publications

References 1 publication

Foraging Range of Honey Bees,Apis mellifera, in Alfalfa Seed Production Fields

Foraging Range of Honey Bees,Apis mellifera, in Alfalfa Seed Production Fields

The Influence of Nectar Production on Hawkmoth Behavior, Self Pollination, and Seed Production in Mirabilis multiflora (Nyctaginaceae)

Heritability of floral traits for the perennial wild flower Penstemon centranthifolius (Scrophulariaceae): clones and crosses

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