A Rapid Nigrosine Method for Chromosome Counts Applicable to Growing Plant Tissues

Abstract

For a plant-breeder dealing with plants which can be cross-fertilized who desires to work up polyploid material on a large scale, annual control of the purity of the polyploid stocks as regards chromosome number is necessary. A breeder of fruit and forest trees should also have at his command methods by which the chromosome numbers in new artificial or spontaneous crosses can be simply separated.