Chromosome Numbers in the Leguminosae. I.

Cytogenetics of Crotalaria. VIII. Male meiosis in 26 species.

“…55,56), out of which on the average 13.60 were ring and 2.40 were rod bivalents. Previous authours have also reported the same gametic number (Turner andIrwin 1961, Chennaveeraiah andPatil 1972).…”

Cytogenetics of Crotalaria. II. Male meiosis in 8 species of Crotalaria.

“…The polyploidy has been reported in only 7 species so far (Boulter et al 1970, Bhaumik 1975, Turner and Irwin 1961, Bir and Kumari 1977, Patil 1970, Turner 1956). C. humifusa, C. stipularia, C. medicaginea, C. nitens, C. pumila, C. mauensis are all tetraploids (2n=32), based on the basic number 8.…”

“…In C. ferruginea, C. humifusa, C. medicaginea, C. nitens and C. pumila the chromosome associations in pollen mother cells at metaphase I are largely confined to bivalents. Multivalents, wherever present, are in low frequency (Bhaumik 1975, Bir and Kumari 1977, Patil 1970, Turner 1956) . On the basis of chromosome associations at metaphase I, the assumption that the allopolyploid or segmental allopolyploid nature of polyploids in Crotalaria may not be true because the chromosome associations even of colchicine induced autotetraploids in C. sericea, C. brownei, C. retusa, C. juncea and C .…”

Cytogenetical studies in genus Phaseolus Linn. I and II. Somatic and meiotic studies in fifteen species of Phaseolus. 2.

“…P, ricciardianus (Darlinglon and Wylie 1955). P. trilobus (Karpechenko 1925, Turner 1956). P. semierectus, P. vulgaris (Karpechenko 1925, Weinstein 1926, Shibata 1962.…”