Nuclear DNA amounts in angiosperms

Abstract

Collected lists of nuclear DNA amounts estimated for a total of almost 1000 angiosperm species were published by Bennett & Smith (Phil. Trans. R. Soc. Lond.B 274, 227—274 (1976)), and by Bennettet al. (Proc. R. Soc. Lond. B 216, 179-199 (1982a)). Subsequently, work on nuclear genome size in flowering plant taxa, and interest in its consequences, has increased. Thus, estimates for 588 angiosperm species not previously listed were published, or communicated to us, between 1982 and mid-1986. As these additional estimates came from more than 50 sources which were either widely scattered in the scientific literature or unpublished personal communications, they are not readily accessible. This, and the many personal enquiries for the information received, shows that a further publication, compiling the new data is needed. This paper, therefore, contains a further supplementary list of absolute DNA amounts. This new compilation includes DNACvalues for 629 angiosperm species not listed in either of the above-mentioned papers, with additional estimates for 119 species already listed by them. These data are assembled primarily for reference purposes. Analysis of citations of the two previously published lists and of personal requests for additional information both show that the major users of genome size information are cell and molecular biologists. Consequently, the species are listed as before in alphabetical order, rather than by any taxonomic scheme, as this was felt to be more helpful to these users