ISHS Acta Horticulturae 777: IX International Rubus and Ribes Symposium
VARIATION AND INHERITANCE OF VEGETATIVE CHARACTERISTICS AND REPRODUCTIVE TRAITS IN BLACK RASPBERRY (RUBUS OCCIDENTALIS L.) |
| Authors: | M.P. Dossett, C.E. Finn |
| Keywords: | heritability |
| Abstract:
Black raspberry (Rubus occidentalis L.) is a major crop for the processing industry in Oregon. The industry relies on ‘Munger’, which was developed in Ohio in 1890 and seldom produces for more than two to three years before succumbing to an array of fungal and viral pathogens. In the late 1990s, all available cultivars of black raspberry were evaluated at the Oregon State University (OSU) North Willamette Research and Extension Center. Based on these trials, parents were chosen for an incomplete partial diallel, consisting of 10 parents and 26 sibling families, for the study of variation and inheritance of vegetative and reproductive traits in black raspberry. Sibling families of one to eight plants were planted at the OSU Lewis Brown Farm in Corvallis, Oregon and were arranged in a randomized complete block design with four blocks. Flowering and ripening seasons were recorded for each plant as well as average fruit weight from samples of 25 randomly collected non-primary fruit and vigor was rated on a numerical scale from 1–9 as part of an ongoing study on variation and inheritance. In the first fruiting season, differences were observed in primocane vigor as well as bloom date, ripening dates, fruit weight and the number of nodes at which fruit was present on fruiting laterals. Trait means that are presented and discussion includes observations on trends in plant parentage as they relate to these means. | |
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