Pollinisation croisée et production de quatre cultivars de fraisier, <i>Fragaria</i> × <i>ananassa</i>

Colbert, S. R.; Oliveira, D. de

doi:10.4141/cjps92-107

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…The influence of pollen quality (allogamous vs. geitonogamous or autogamous) is a seldom‐quantified (but see Alonso, Herrera, & Ashman, ) but important consideration when predicting pollinator influence on crop yield (Aizen & Harder, ). Further, in strawberry, certain inter‐variety crosses have been found to increase berry mass (Colbert & de Oliveira, ). As our study was done on one commercial berry farm over one season, yield may have been influenced by the strawberry varieties specific to the study site.…”

Section: Discussionmentioning

confidence: 99%

“…Strawberry pollination is typically achieved by the deposition of both autogamous (self) and allogamous (outcross) pollen through the action of wind, gravity and insects (Darrow, ; McGregor, ). Cross‐pollinated strawberry flowers often produce larger berries with fewer malformations than flowers receiving self (geitonogamous or autogamous) pollen (Chagnon et al., ; Pion, Oliveira, & Paradis, ); this effect is greater for certain inter‐variety pollinations (Colbert & de Oliveira, ). However, the degree of self‐fertility differs among varieties (Zebrowska, ) and the influence of outcrossed pollen on berry size would depend on the level of self‐compatibility within a variety.…”

Section: Methodsmentioning

confidence: 99%

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Pollination by wild bees yields larger strawberries than pollination by honey bees

MacInnis

Forrest

2019

Journal of Applied Ecology

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A diverse array of wild bee species may provide more effective pollination than the widely employed European honey bee (Apis mellifera L.). High species richness within crop pollinator assemblages has been linked to enhanced fruit and seed yields, but species richness is often confounded with abundance in studies of pollinator communities. We investigated the effects of bee diversity and species identity on pollen deposition and crop yield in the strawberry (Fragaria × ananassa) variety Jewel through a field experiment that independently manipulated the species richness and abundance of flower visitors. We used a new pollen deposition measurement technique to determine the pollen contribution of individual bees in an assemblage of flower visits. We compared the performance of wild bee species and managed honey bees, as pollinators of strawberry. We also calculated the influence of species richness, visit frequency and visitor identity on fruit mass, using the fruit that developed from each sampled flower. Species richness of flower visitors did not influence floral pollen loads or strawberry mass. Honey bees and wild bees deposited the same amount of pollen per visited flower. However, strawberries that developed from flowers visited by wild bees were heavier than flowers visited by honey bees. In addition, flowers visited by a combination of wild and honey bees produced strawberries that weighed less than flowers receiving purely WB visits. Synthesis and applications. Our findings show that honey bee pollination results in lower yields than wild bee pollination in a strawberry crop. Consequently, if managed honey bees in strawberry fields displace wild pollinators, growers may obtain suboptimal yields. Management efforts aimed at the maintenance or enhancement of wild pollinator populations may therefore be a cost‐effective way to increase both crop yield and biodiversity on strawberry farms.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Pollination by wild bees yields larger strawberries than pollination by honey bees

MacInnis

Forrest

2019

Journal of Applied Ecology

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“…Researchers have used different methods to measure fertility. These include the percentage of flowers setting fruit, the number of fertilised achenes per fruit and the weight of achenes per fruit (Colbert & de Oliveira, 1992;Ferrante et al, 2022;Van Oystaeyen et al, 2022). The proportion of stigmas fertilised and producing a viable achene can be used to calculate the rate of pollination (Moore, 1964;Thompson, 1971).…”

Section: Methods Used To Study Pollinationmentioning

confidence: 99%

Fruit set is moderately dependent on insect pollinators in strawberry and is limited by the availability of pollen under natural open conditions

Menzel¹

2023

The Journal of Horticultural Science and Biotechnology

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Modern strawberry (Fragaria ×ananassa Duch.) cultivars are hermaphrodite and have fertile flowers, with the anthers releasing viable pollen. Cultivars are self-compatible and do not require cross-pollination. Studies supporting managed or wild insects are based on a few reports and there are problems with the methods used to assess pollination. This review examined the role of pollination in strawberry. The mean (± s.d. or standard deviation) pollinator dependence (PD) for yield (self-pollination versus open-or insect-assisted pollination) was 0.36 ± 0.26 (P < 0.001, N = 52 studies). The yields of plants exposed to supplementary insects were higher than those exposed to pollinators under natural open conditions, with a calculated pollen limitation (PL) of 0.20 ± 0.17 (P < 0.001, N = 20 studies). Fields close to seminatural habitats, wildflowers, grass or hedges can have more pollinators and a greater diversity of pollinators than fields further away. However, a greater abundance of pollinators does not always lead to higher fruit set. Yield is dependent on insect pollinators (moderate pollinator dependence) and is limited by the availability of pollen under natural open conditions (moderate pollen limitation).

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“…Because stigmas are generally receptive before pollen of the same flower is available, cross-pollination is encouraged (McGregor 1976). Colbert & de Oliveira (1992) showed that berries resulting from crosspollination of two different cultivars were significantly heavier than berries resulting from pollination within the same cultivar. Cultivars with shorter stamens benefit most from insect pollination (Connor and Martin 1973).…”

Section: Strawberry Pollinationmentioning

confidence: 99%

The tarnished plant bug and strawberry production

Bostanian¹,

Canada²

1994

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Pollinisation croisée et production de quatre cultivars de fraisier, Fragaria × ananassa

Cited by 4 publications

References 3 publications

Pollination by wild bees yields larger strawberries than pollination by honey bees

Pollination by wild bees yields larger strawberries than pollination by honey bees

Fruit set is moderately dependent on insect pollinators in strawberry and is limited by the availability of pollen under natural open conditions

The tarnished plant bug and strawberry production

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