had a higher percentage fruit set (r=0.34), and a larger total number of flowers also led to higher fruit set (r=0.25). Correlations among individual states were not analyzed due to lack of data.

2004 study. Most vegetative and reproductive characteristics varied among populations in 2004 (Tables 5.9 and 5.10). Trunk cross sectional area differed widely between populations, with trees from Washington County, Indiana and Kentucky having larger TCSA than accessions from West Virginia, Maryland, and Decatur County, Indiana. The total number of flowers produced by each tree varied greatly, with accessions from New York producing significantly more flowers than trees from West Virginia, Maryland, Kentucky, and Decatur County, Indiana. New York accessions also flowered for a longer period of time than trees from West Virginia or Kentucky. Flowering peak varied, with accessions from West Virginia and Kentucky blooming significantly later than the other populations. Trees from Washington County, Indiana, West Virginia and Kentucky had harvest peaks significantly later than those of New York and Decatur County, Indiana.

Percentage fruit set did not differ significantly between populations, with an average of approximately 12% fruit set on trees. Total number of clusters per tree did vary, with accessions from Washington Co., Indiana, New York, and Kentucky producing more clusters per tree than accessions from West Virginia or Maryland. Populations from Washington Co., Indiana and Maryland also produced more fruit per cluster, on average, than trees from New York, West Virginia, or Decatur Co., Indiana. Total number of fruit on each tree varied greatly, with accessions from Washington County, Indiana; New York, and Kentucky producing more fruit on average than trees from West Virginia and Decatur County, Indiana. Populations also showed variation in average fruit weight, with trees from West Virginia producing the largest fruit (138 g) and Kentucky accessions producing the smallest fruit (74 g), with the other four populations producing fruit of a similar, moderate size (approximately 100 g). Neither average total yield per tree nor yield efficiency was significantly different between populations. Length of harvest differed significantly, with trees from Kentucky, Washington County, Indiana, and New York producing fruit over a longer period of time than accessions from West Virginia, which had the shortest harvest interval. Harvest peak