M. S. Sohoo

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Asynapsis was noticed in a line G 150 of cluster-bean. In meiotic studies 14 univalents were observed at diakinesis and all subsequent meiotic stages were highly irregular. The asynaptic plants produced highly sterile pollen and there was very rare seed setting. The asynapsis was controlled by a single gene that was recessive to that for normal meiosis.
The most successful induction of tetraploidy was obtained with 2 hour treatment by 0.25% aqueous colchicine solution of 18-hour watersoaked desi chickpeas material. However, kabuli types needed only 1 hour treatment under similar conditions. Gigantism accompanied induction of polyploidy in desi as well as kabuli types but yield and fertility were greatly(More)
The extent of natural cross-pollination in Egyptian clover cultivated in Punjab, India, varied from zero to 4.73% in all the three different sowing arrangements. The high out-crossing percentage in the alternate plant (1.57%) and the concentric circle arrangement (1.6%) was due to the close proximity of the pollen source and the abundant pollen supply.
The average cross-pollination in Egyptian clover under caged and uncaged conditions was 0.51% and 1.44% respectively. The low percentage of cross-pollination under caged conditions was due to the absence of honey bees, calm atmosphere and reduced photosynthesis whereas higher outcrossing under uncaged conditions was both by wind and honey bees activities.(More)
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