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United States Department of Agriculture

Agricultural Research Service

Research Project: Physiology and Genetic Improvement of Small Fruit Crops

Location: Horticultural Crops Research

Title: Primocane-fruiting in black raspberry (Rubus occidentalis L.)

Authors
item Dossett, M -
item Finn, Chad

Submitted to: Journal of American Pomological Society
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: July 17, 2010
Publication Date: April 1, 2011
Citation: Dossett, M., Finn, C.E. 2011. Primocane-fruiting in black raspberry (Rubus occidentalis L.). Journal of American Pomological Society. 65(2):56-61.

Interpretive Summary: Production of fruit on first year canes, or primocane-fruiting in red raspberries and blackberries has proven to be an important trait, allowing production, particularly for the fresh market, to expand into new geographic areas and non-traditional seasons. While not a new trait, primocane-fruiting black raspberries have received new attention from breeders in recent years. Despite this, relatively little is known about primocane-fruiting in black raspberry because historical sources of the trait have been lost, and little has been written on the subject. Modern sources of primocane-fruiting include seedlings of floricane-fruiting black raspberry cultivars as well as wild black raspberry germplasm. Over 150 black raspberry populations were evaluated for primocane fruiting and 29 populations exhibited some primocane fruiting in their seedlings. Expression of primocane fruiting in these plants is variable, and further study on the genetic control of primocane fruiting and the effects of environmental influences on expression are needed.

Technical Abstract: Production of fruit on first year canes, or primocane-fruiting in caneberries (Rubus L.) has proven to be an important trait, allowing production, particularly for the fresh market, to expand into new geographic areas and non-traditional seasons. While not a new trait, primocane-fruiting black raspberries have received new attention from breeders in recent years. Despite this, relatively little is known about primocane-fruiting in black raspberry because historical sources of the trait have been lost, and little has been written on the subject. Modern sources of primocane-fruiting include seedlings of floricane-fruiting black raspberry cultivars as well as wild black raspberry germplasm. Expression of primocane fruiting in these plants is variable, and further study on the genetic control of primocane fruiting and the effects of environmental influences on expression are needed.

Last Modified: 7/31/2014
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