Cytomorphology of Induced Tetraploidy in Cajanus cajan and Vigna unguiculata
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Colchitetraploids were synthesized in <I>Cajanus cajan</I> cv. Prabhat and <I>Vigna unguiculata</I> ssp. <I>unguiculata</I> cv. GC 82-7. Tetraploids of <I>C. cajan</I> exhibited reduction in vigour while that of <I>V. unguiculata</I> expressed 'gigantism'. Increase in cell size was observed in both genera. Meiosis was normal in majority of the meiocytes, however, multivalent associations, unequal chromosome distribution, laggards <I>etc</I>. were also observed in some cells. The results suggested involvement of genetic and physiological factors in addition to chromosomal abnormalities for observed high pollen and seed sterility.
CYTOLOGIA 64(1), 29-36, 1999-03
Japan Mendel Society, International Society of Cytology