Maine wild blueberry systems analysis

Yarborough, David E.; Drummond, F. A.; Annis, Seanna L.; D’Appollonio, J.

doi:10.17660/actahortic.2017.1180.21

Cited by 32 publications

(27 citation statements)

References 8 publications

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“…Because the fruit set appears to determine the seed set and berry size in wild blueberries, it is important to know what the factors are that explain variation in fruit set. Yarborough et al [8] showed that fruit set was negatively affected by the mummy berry disease, blueberry thrips infestation, and frost. The fruit set was positively affected by bee forager density and flower buds per stem.…”

Section: Discussionmentioning

confidence: 99%

“…This study and the published literature cited in the introduction have contributed to the development of a conceptual model of wild blueberry pollination that includes: (1) a predictive phenology of bloom, (2) stigma receptive longevity, (3) pollen genotype and non-reciprocity of outcrossing, (4) an understanding of genetic load and self-compatibility, (5) spatial genetic structure of genets, (6) gene flow as measured by pollen movement by bees, (7) bee species differential efficiency in pollen deposition, (8) pollen tetrad quantity on stigmas and resulting fruit set, (9) bee forager density efficacy and fruit set, and effects on fruit set by: (10) flower density per stem, (11) seed set, and (12) deleterious impacts of mummy berry disease, thrips, and frost. Two other aspects of wild blueberry reproduction that need to be incorporated into this conceptual model is: (1) the contribution of self-compatible clones and (2) the phenomena of the fruit drop as it relates to pollination and plant fitness.…”

Section: Discussionmentioning

confidence: 99%

“…In 2006, six fields were sampled, in 2007, one field was sampled, and, in 2011, 12 fields were sampled. In 2011, these 12 fields represented three organic fields, three low input fields, three medium input fields, and three high input fields [8]. In 2006, on 19 July, 10 berries were arbitrarily collected from each of 10 clones in each field.…”

Section: Fruit Set and Seed Development In Fruitmentioning

confidence: 99%

“…However, there are considerable differences in yield for the same number of viable seeds per berry across fields. This most likely reflects the multitude of other factors that affect yield (see Reference [8]).…”

Section: Fruit Set and Seed Development In Fruitmentioning

confidence: 99%

“…Pollination is the most significant factor in wild blueberry production [7,8]. Wild blueberry pollination is almost entirely dependent upon bees [7,9] even though nocturnal flying insects such as moths and day flying birds such as hummingbirds have been reported as visiting the bloom [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Reproductive Biology of Wild Blueberry (Vaccinium angustifolium Aiton)

Drummond

2019

Agriculture

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Wild blueberry, Vaccinium angustifolium Aiton, is a native forest understory plant that is managed as a fruit crop. Over the past 51 years, experiments have been conducted to investigate its reproduction. A model was developed that predicts bloom to begin at 100° days (base 4.4 °C) after 1 April and to end at 500° days for a period of three to four weeks. Flower stigmas are only receptive to pollen deposition for eight to 10 days, and the rate of fruit set declines rapidly after four days. Placement of pollen upon receptive stigmas suggests that fruit set occurs with as little as a single pollen tetrad. Twelve tetrads result in 50% fruit set. Several years of exploratory fruit set field experiments show viable seeds per berry, which result from pollination with compatible genotype pollen, is associated with larger berry mass (g). Decomposition of the total variance in fruit set shows that stem variation explains 65% to 79% of total variance in the fruit set. To a lesser extent, the field, year, and clone also explain the percent fruit set variation. Variation between stems may be due to variation in the number of flowers. Fruit set tends to decrease as the flower density increases, possibly due to the limitation of pollinators.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Fruit Set and Seed Development In Fruitmentioning

confidence: 99%

Section: Fruit Set and Seed Development In Fruitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reproductive Biology of Wild Blueberry (Vaccinium angustifolium Aiton)

Drummond

2019

Agriculture

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Bearing fruit: flower removal reveals the trade-offs associated with high reproductive effort for lowbush blueberry

Bajcz

Drummond

2017

Oecologia

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Past studies have shown that taxa from disparate groups often respond similarly to reduced reproductive effort. These common responses imply that high reproductive effort trades off with a consistent set of other life functions for most angiosperms, albeit modulated by their growth form and life history. However, many questions remain about reproductive trade-offs in plants, including just how many other life functions they involve, how diverse these functions may be, and how the severity of these trade-offs may vary through time. To address these questions in a long-lived, iteroparous shrub, we performed flower removal on plots of lowbush blueberry, Vaccinium angustifolium (Ericaceae), over 3 years. We found significant physiological differences between removal and control plots for ten diverse traits. Vegetative phenology was shifted earlier by about 20% in removal plots, and removal plots had about 15% more vegetative biomass by mid-season as well. Removal plots produced about 10% more ripe fruit per reproductive node by harvest than control plots, and reproductive nodes in removal plots produced at least one fruit by harvest about 6% more often. While fruit water content and titratable acidity were increased by removal, other fruit traits, such as sugar content and fresh mass, were not. The strength of the removal effect varied significantly by year for seven traits; for many, such as vegetative mass/stem and ripe fruit production/node, the effect was stronger in years with more stressful abiotic conditions. Our results demonstrate that there are tangible but variable costs to high reproductive effort for flowering plants.

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Erratum to: Bearing fruit: flower removal reveals the trade-offs associated with high reproductive effort for lowbush blueberry

Bajcz

Drummond

2017

Oecologia

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Maine wild blueberry systems analysis

Cited by 32 publications

References 8 publications

Reproductive Biology of Wild Blueberry (Vaccinium angustifolium Aiton)

Reproductive Biology of Wild Blueberry (Vaccinium angustifolium Aiton)

Bearing fruit: flower removal reveals the trade-offs associated with high reproductive effort for lowbush blueberry

Erratum to: Bearing fruit: flower removal reveals the trade-offs associated with high reproductive effort for lowbush blueberry

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