Ethnobotany and Ethnomedicinal Uses, Chromosomal Status and Natural Propagation of Some Plants of Lahaul-Spiti and Adjoining Hills
Figure 5
Meiotic chromosome number. (a) Rosularia alpestris, at metaphase-I. (b) Corydalis govaniana, at metaphase-I. (c) Thalictrum foetidum, at metaphase-I. (d) Geranium pratense, 28 : 28 chromosomes distributions at metaphase-II. (e) Geranium wallichianum, at diakinesis. (f) Impatiens sulcata, at metaphase-I. (g) Biebersteinia odora, at metaphase-I. Meiotic abnormalities in pollen mother cells (PMCs) and sterile pollen grains. (h) A PMC showing univalents (arrowed) and multivalents (arrowhead). (i) PMCs in a group showing inter-PMC chromatin transfer (arrowed) and chromatin stickiness (arrowhead). (j) A PMC showing laggards at anaphase-II. (k) A PMC showing a chromatin bridge at anaphase-II. (l) Pycnotic chromatin material scattered in the cytoplasm of PMCs. (m) A PMC showing unequal distribution of chromatin material at poles. (n) Micronuclei at telophase-I. (o) Micronuclei at sporad stage. (p) Apparently sterile (arrowed) and fertile pollen grains (arrowhead).
