Question: how many chromosomes are present in a leaf cell of a petunia?
Answer: Cytological analysis identified the chro- mosome number of diploid plants of Petunia hybrida as 2n = 2x = 14 (Fig. 1, A3). In two of the tetraploid plants (as identified by cyto- metric analysis), the cells were found to be larger than those of diploid plants with 28 chromosomes in each cell, i.e., 2n = 4x = 28 (Fig.