Figure 3 - uploaded by Manoj M. Lekhak
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Ideograms of Ipomoea and Merremia species: (a) I. corymbosa; (b) I. kotschyana; (c) I. laxiflora; (d) I. marginata f. candida; (e) I. salsettensis; (f) I. ochracea; (g) M. rhyncorhiza. Scale bars = 1 μm.
Source publication
Karyotypes of six Ipomoea and one Merremia species were studied. Chromosome counts of 2n = 30 for I. corymbosa, I. kotschyana, I. marginata f. candida and M. rhyncorhiza) and 2n = 60 for I. ochracea were observed for the first time. Meiotic course of five Ipomoea species was also examined for the first time and two counts, i.e. n = 15 and n = 30 we...
Context in source publication
Context 1
... metaphase chromosomes of seven species were studied. Meiotic study was performed on five species. Ipomoea ochracea (Lindl.) Sweet exhibited 2n = 60 chromosomes while the rest of the species had 2n = 30 chromosomes. Comparative karyotypes of all the species investigated are summarized in Table 2. Fig. 2 illustrates the mitotic metaphases while Fig. 3 depicts ideogram. Chromosomes were with median region centromeres, and hence the karyotype formula 15m (I. corymbosa, I. kotshyana, I. laxiflora, I. marginata f. candida and M. rhyncorhiza) or 30m (I. ochracea). Four B-chromosomes were observed in I. salsettensis (Fig. 2f) and the karyotype formula was 15m+4B. The highest mean ...
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