Pak. J. Bot., 32(1): 7-14, 2000. | Back to Contents | ||||
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Updated: 08-04-11 | ||||
CHLOROPLAST DNA VARIATION IN POLYGONATAE SENSU LATO (LILIACEAE) ZABTA KHAN SHINWARI
Abstract: cp
DNA variations were examined in 16 species of 7 genera of the tribe Polygonatae
for 50 probe-enzyme combinations to study phylogenetic relationship among genera
and species. The shared fragments were counted, index of similarity and distance
matrix calculated. The study supports the idea against mono-phyly of Polygonatae
sensu lato. The results suggest that there are three monophyletic groups
within Polygonatae sensu lato. Group I with genera Maianthmum, Smilacina
and Disporopsis; group11with Uvularia and Disporum and group
III with genera Prosartes and Clintonia. The differences between
each group (estimated F value x 100 were 5.88-7.8 for group I and 11, 4.8-6.6
for I and III and 3.4-5.61 for II and III. The distance within the genus Prosartes
was 0.33-0.84, while it differed from Disporum in 3.4-5.52. The difference
of Prosartes from Clintonia was 2.2, while between Disporum
and Uvularia as 1.63-0.171. The RFLP studies turned out to be concordant
to morphological data. The present findings support lumping of Smilacina
in Maianthemum. National Herbarium, National Agricultural Research Centre, P. 0. NIH, lslamabad, Pakistan. |
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