RuIjus chamaemorus plant in fruit. This 



octoploid plant crossed with the diploid 



Taylor raspberry has given interesting 



results. 



Ruhus odoratus. the flowering rasp- 

 berry. The seedlings from these 

 crosses have been very weak grow- 

 ers, bear pink sterile flowers, and 

 produce almost no sucker plants. 

 Crosses between Rubus odoratus and 

 Snyder blackberry have also been 

 made. Seedlings from this cross 



have been almost sterile, although 

 some seed on this hybrid was pro- 

 duced in 1948 and again in 1949. 

 A few seedlings have been started. 

 The blackberry cross is very vigor- 

 ous, is thornless, and spreads rapid- 

 ly by suckers. 



The thornlessness and disease-re- 

 sistance of Rubus odoratus are high- 

 ly valuable features. It is hoped that 

 they may be incorporated in good 

 fruiting varieties. 



Crosses were also made in the 

 winter of 1942 and 1943 between 

 Taylor raspberry, a diploid, and 

 Rubus chamaemorus, the bake 

 apple berry, an octoploid, which was 

 obtained from R. B. Pike of Lubec, 

 Maine. The bakeberry plant pro- 

 duces yellow fruits on plants less 

 than six inches high. Hybrids be- 

 tween it and raspberry proved to be 

 quite fertile, some bearing pinkish- 

 yellow fruits, others red. These 

 plants grew to about two feet in 

 height. They were only half winter 

 hardy. 



Seed saved from these hybrids 

 gave a second generation of seed- 

 lings, all of a suckering habit and 

 varying from six inches to eight feet 

 in height. Some are hardy, some 

 are not. One of the best selections 



These hybrid raspber- 

 ries am produced on 

 two foat plants. 



