Flowering and Fruiting Morphology of Primocane-Fruiting Blackberries

Thompson, E. G.; Clark, John R.; Strik, Bernadine C.; Finn, Chad E.

doi:10.17660/actahortic.2008.777.42

Cited by 5 publications

(7 citation statements)

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“…However, Strik et al (2008) found that primocanes soft-tipped to 1 m (done in June) produced threefold the yield of untipped canes. This higher production is a result of a higher number of branches per cane, five on average, and threefold the flower number on soft-tipped canes (Thompson et al, , 2008.…”

Section: Primocane Managementmentioning

confidence: 96%

“…Date of first bloom on primocanes ranged from 16 June in Arkansas (Clark et al, 2005) to 14 to 22 July, depending on primocane management treatment, in Oregon . 'Prime-Jim' and 'Prime-Jan' averaged 46 and 52 d from anthesis to shiny black fruit, respectively (Thompson et al, , 2008. Fruit harvest on primocanes began on 17 July in Arkansas and continued until frost, although fruit numbers were greatly reduced during higher temperatures in August (Clark et al, 2005).…”

Section: Flowering and Fruiting Morphologymentioning

confidence: 99%

“…The primocanes of 'Prime-Jan' and 'Prime-Jim' tend to branch naturally, producing a couple of branches near the base (Thompson et al, , 2008. Primocanes that are not summer-pruned can reach over 2 m in height in Oregon.…”

Section: Primocane Managementmentioning

confidence: 99%

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Primocane-fruiting Blackberries: Potential for Extending Harvest Season and Production Regions

Strik¹,

Thompson²

2009

horts

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Primocane-fruiting blackberries produce fruit on current-season canes (primocanes) and second-season canes (floricanes), if desired. Primocane-fruiting blackberries are likely adapted to a diverse range of climates, particularly because cold hardiness is not an issue when plants are grown for a primocane crop only. The floricane crop of ‘Prime-Jan’® and ‘Prime-Jim’® is from 3 June to 6 July in Arkansas and 30 June to 22 Aug. in Oregon, thus overlapping with other fresh market blackberries. However, although the primocane crop overlaps with the semierect cultivar Chester Thornless, the fruiting season of the primocane-fruiting types is longer. Harvest on primocanes began 17 July and mid-August in Arkansas and Oregon, respectively. The primocanes of ‘Prime-Jan’ and ‘Prime-Jim’ tend to branch naturally, producing a couple of branches near the base. However, soft-tipping primocanes at 1 m early in the season increased branch and flower number, resulting in a threefold yield increase compared with untipped canes. Yield and berry size in Oregon has been from 1.8 to 5.2 t·ha−1, depending on primocane management treatment, and 5.2 to 7.4 g, respectively. However, yield would have been much higher if all fruit could have been harvested as would be possible under protected culture. Our research to date indicates that primocane-fruiting blackberry can be easily manipulated to adjust harvest time. Remowing primocanes to create a delayed flush of growth will delay harvest. Rowcovers or tunnels that increase temperature will advance primocane growth and harvest. Soft-tipping height and frequency can affect cane architecture and season. Management techniques along with new genotypes of primocane-fruiting blackberry will have a great impact on blackberry production worldwide.

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Section: Primocane Managementmentioning

confidence: 96%

Section: Flowering and Fruiting Morphologymentioning

confidence: 99%

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Primocane-fruiting Blackberries: Potential for Extending Harvest Season and Production Regions

Strik¹,

Thompson²

2009

horts

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“…Upright primocanes of PF blackberries can grow >2.5-m tall (15) and produce fruit usually only at its terminal. However, by bending the primocanes about ~20-cm from the tip when the primocanes are 1-m tall their subsequent extension growth occurs horizontally by periodically securing their distal ends to the training wires.…”

Section: Effects Of Primocane Bending Date and Defoliationmentioning

confidence: 99%

“…However, in the Southeastern U.S. and areas with a wet, humid condition, the decapitation of actively growing stout primocanes during the late spring-summer period can cause cane blight to develop resulting in loss of productivity or even cane death from infection through open pruning cuts (14). In more northern regions with a shorter growing season, PF blackberry production has been limited due to the short, late harvest season (15). Also, a frost can damage fruit and end the harvest season before the crop reaches full maturity (16).…”

Section: Introductionmentioning

confidence: 99%

Effects of Cane Emergence Time, Bending, and Defoliation on Flowering and Yield in Primocane-Fruiting Blackberry

Takeda¹,

Rose²,

Demchak³

2020

Preprint

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Primocane-fruiting (PF) blackberries are adaptable to different production systems. To increase yields in PF blackberries, their primocanes are typically tipped or topped in summer to encourage branch formation from axillary buds below the cut. In this study, we determined in PF ‘Prime-Ark Traveler’ whether early emerging primocanes were more productive than those that emerged later in the season and the effect of primocane bending and defoliation on flowering. The primocanes that emerged in April produced 64% more flower shoots than those that emerged after May. Also, these findings indicate the alternative primocane management practices of selecting the early emerging primocanes and bending to orient primocanes horizontally and leaf removal increase budbreak and flower shoot emergence. The present work contributes toward a better understanding of primocane emergence time and orientation-flowering relations and how they mediate crop performance in PF blackberry.

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Blackberry

Finn

Clark

2011

Fruit Breeding

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Flowering and Fruiting Morphology of Primocane-Fruiting Blackberries

Cited by 5 publications

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Primocane-fruiting Blackberries: Potential for Extending Harvest Season and Production Regions

Primocane-fruiting Blackberries: Potential for Extending Harvest Season and Production Regions

Effects of Cane Emergence Time, Bending, and Defoliation on Flowering and Yield in Primocane-Fruiting Blackberry

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