205 THE WASHINGTON STATE CRANBERRY VARIETY `MCFARLIN': YIELD AND COMPONENTS OF YIELD VARIATION

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  • 1 Blueberry and Cranberry Research Center, Rutgers University, Chatsworth, NJ 08019
  • | 2 Washington State University-Long Beach Research and Extension Unit, Long Beach, WA 98631

WA State bogs of the cultivar `McFarlin' exhibit highly variable productivity. Yield and various fruiting characteristics were sampled in 14 WA `McFarlin' bogs, representing two growing areas. Significant differences were found for yield, fruit number/area, percent fruit set, flowers/upright, fruit/upright, fruit weight and seed number/fruit. The variable, flowers/upright, accounted for 69% and 75% of the observed variation for yield and fruit number/area, respectively. A multivariate analysis model accounted for 93% of the variation for yield with 3 variables: flowers/upright (69%), fruit weight (20%), and seed number (4%). Principal component analysis identified three `groups' based on fruiting characteristics. DNA fingerprinting suggests, that variability in yield and fruiting characteristics, has a genetic component.

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