New York Agricultural Experiment Station. 543 



DISCUSSION OF EESULTS. 



The records of the same variety for the same season in different 

 localities will first be considered to see what influence a difference 

 in locality appeared to have on the degree of self-fertility. 



At Penn Yan the self-fertilized Niagara clusters were nearly 

 compact enough, on the average, to be called marketable; at 

 Branchport they were slightly looser. At Penn Yan, Yergennes 

 covered clusters averaged nearly half-filled, but at Branchport the 

 covered clusters on the average were about one-fourth filled. At 

 Penn Yan and at the Station, Worden self-fertilized gave nearly 

 perfect clusters, but at Branchport only moderately compact clus- 

 ters. At Penn Yan self-fertilized Diana gave perfect clusters, but 

 at Branchport its clusters averaged but little more than half 

 filled. At Penn Yan self-fertilized Prentiss on the other hand 

 bore only moderately compact clusters, while at Branchport it 

 bore nearly perfect clusters. At Penn Yan, Lindley, out of 25 

 covered clusters, produced fruit on but one and that bore four 

 berries; 25 clusters covered at the Station gave no fruit. At 

 Penn Yan 25 covered clusters of Brighton produced but one fruit; 

 at Branchport 5 clusters were covered and 3 produced fruit (see 

 Plate LI, Figure 1); at the Station 27 were covered but no fruit 

 formed. 



It appears from these records that some varieties show a differ- 

 ence in the degree of self-fertility which they possess in different 

 locations. On the other hand other varieties which were tested 

 in the same season in the different locations gave practically simi- 

 lar results in different localities. Brighton, Catawba, Concord, 

 Delaware, Diamond and Salem gave practically similar results for 

 the same variety at Penn Yan and at Branchport. Moore, Early 

 and Worden gave similar results for the same variety at Penn Yan 

 and at the Station. 



Some of the varieties tested at Penn Yan and Branchport were 

 not tested at the Station the same season, but were tested there in 

 various other seasons. In these cases the differences in environ- 



