Studies on the generative nuclear division. II. Behavior of the chromosomes during the generative nuclear division in Allium fistulosum.

Studies on the generative nuclear division. IV. Effect of sucrose in the artificial medium on the generative nuclear division in Tradescantia paludosa.

“…This phenomenon characterized the pollen tube culture in Tradescantia paludosa. And this shows a decisive different feature of this material against other plant species including Allium fistulosum and Lilium longiflorum; in two species last mentioned, daughter nuclei were observed not infrequently in common cultures (Kamizyo andTanaka 1981, 1982).…”

“…Kwack and Kim (1967) reported in the same material that, the relative frequency of arrested metaphase increased upto the 7 hr culture, showing a frequency of 18.4%, after then, it decreased continuously in longer period cultures. In Lilium longiflorum, on the other hand, about one half of the total nuclei (47.9%) were arrested at mitotic metaphase in the 10% sucrose medium containing 0.1% ATP and 0.01% colchicine, and accompanied by only a few per cent of necrotic nuclei, even at the end of the 16 hr-culture (Kamizyo andTanaka 1980, 1982). The reason why in Tradescantia paludosa the frequency of arrested metaphase is very low (Kwack and Kim 1976) becomes a next problem.…”

Distribution of Chromosomes into Discrete Groups in Colchicine-Induced C-Metaphases of Barley

“…Studies of nuclei of many species have led to the conclusion that each chromosome occupies a specific position within the interphase nucleus and this is maintained from telophase to the time of entry into prophase (AGARD and SEDAT 1983;AsHLEY and PococK 1981;AviVI and FELDMAN 1980;BASSI, CREMONINI and CIONINI 1982;BEERMAN 1977;BEN-NETT 1982;CoMINGS 1968CoMINGS , 1980CoNSTABEL, WEBER and KIRKPATRIK 1977;CREMER et al 1982;EvANS 1961;FussELL 1975;GHOSH and RoY 1977;HoRN and WALDEN 1978;KAMIIZYo and TANAKA 1981;]AcK and]uDD 1979;] AuN-CEY 1975;LIFSCHYTZ and HAREVEN 1982;MANTON 1935;MANUEUDIS, SEDAT and FEDER 1980;RoY and GHOSH 1977;STACK and CLARK 1974;STEFFENSON 1977;TANAKA 1981aTANAKA , 1981bWALDEN and]AUNCEY 1976;WERRY eta!. 1977).…”