Length of meristematic and fully elongated root cells related to haploid DNA content

The lengths of meristematic (l m) and fully-elongated cells (l e) were measured in the roots of 118 monocot and dicot species of herbaceous plants from 20 angiosperm families. The results were analyzed using the data on haploid DNA content (C val) for the same species from the website (http://data.kew.org/cvalues). The distribution range of l m, l e, and C val was wider in monocot plants compared to dicots. Values of l m and l e in monocot and l m in dicot species correlated positively with C val. Dependence of l m and l e on C val was similar in diploid and polyploid species, both monocots and dicots. The average length of root cells differed less than the root length.