Table 2. Date when the average internal ethylene concentration of Starkspur 

 Supreme Delicious fruit reached one ppm. Fniit were from trees on various 

 rootstocks in the 1984 NC-140 Cooperative Planting in Massachusetts. Means 

 were adjusted for the effects of crop load.' 



Rootstock 



1989 



1990 



1992 



1993 



P. 16 



M.26 EMLA 



B.9 



M.7 EMLA 



C.6 



P.l 



P. 18 



P.2 



P.22 



MAC.39 



B.490 



Seedling 



MAC.l 



M.4 



A.313 



'■ Means within a column not followed by the same letter are significantly 

 different at odds of 19:1. 



Fru'n Notes, Summer, 1994 



17 



