CHROMOSOMAL • DICCIONARIO INGLES.COM • Definition of Chromosomal

... at the time of division. Such changes are transferred to succeeding generations by the hereditary chain familiar to plant breeders. Several species of nuts are among this class of plants with doubled chromosomal numbers, however, such duplications occurred in nature. A report on this phase was given at a recent meeting of the N.N.G.A. Therefore such excellent nut producing species as the pecan are naturally doubled types, called polyploids. We find numbers ...

— Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting - Rockport, Indiana, August 25, 26 and 27, 1952 • Various