Subsequent breeding by Stover, us-
ing V. smalliana, V. simpsoni, and V.
shuttleworthi as sources of PD resist-
ance, led to the release of four other
PD-resistant bunch grapes: 'Blue
Lake' (1960), 'Norris' (1966),
'Stover' (1968), and 'Liberty' (1976).
'Blue Lake' is an excellent jelly and
dooryard variety, 'Stover' has po-
tential for fresh fruit and neutral
wine, and 'Liberty' has good fresh
fruit quality, principally a home gar-
den cultivar.
 Numerous crosses and evalua-
 tions are being continued at ARC,
 Leesburg to develop long-lived cul-
 tivars with competitive quality and
 yield for both fresh market and
 processing. Several outstanding se-
 lections of bunch grape are now
 being tested at Agricultural Re-
 search Centers in Fort Pierce, Lees-
 burg, and Monticello.
 Muscadine breeding was begun
by the USDA at New Smyrna Beach
in 1907 with a cross in a Florida
grower's vineyard that later gave rise
to the first self-fertile muscadine
seedling. V. rotundifolia cv. 'Eden'
was crossed with a native Florida
male selection of V. munsoniana,
and the seedlings were grown at
Willard, North Carolina. Most self-
fertile muscadine cultivars in use to-
day trace back to this original cross
made in Florida.
 Muscadine grapes have been
grown in back yards trained to over-
head arbors for many years in cen-
tral, north, and west Florida, proving
their adaptability here. However,
muscadines have become important


Blue Lake (1960)


II I