THE FACTOR FOR BITTERNESS IN THE SWEET ALMOND

Myer J Heppner
1923 Genetics  
The blossoms of the almond tree are very susceptible t o frost. -As the almond blooms earlier than other orchard fruits it is often subjected to much more severe frosts than occur during the blooming period of the later fruits. As a result of this tenderness of the blossoms and the early period of blooming the crop secured is materially decreased. With the hope of improving our present varieties or securing new ones that would bloom late and yet be good in quality and productivity, a large
more » ... r of nuts were secured from the crosses made in the first (1916) and fourth (1919) years of an almond pollination experiment being carried on by the CALIFORNIA EXPERIMENT STATION, and developed into seedlings. It was thought that if any of the important varieties, such as the Nonpareil, Ne Plus Ultra and
doi:10.1093/genetics/8.4.390 fatcat:bkyfkah3xfdxblbbdtop3mvehe