In 1950, G. Ledyard Stebbins devoted two chapters of his book Variation and Evolution in Plants (Columbia Univ. Press, New York) to polyploidy, one on occurrence and nature and one on distribution and ...
Sand rock- cress (Arabidopsis arenosa) serves as a model for unravelling the mystery surrounding the sterility of newly formed polyploids. The rights to the images always remain with the person ...