Further investigations on several genera of Umbelliferae and their interrelationships

Male Meiotic Studies in Some Plants of Polypetalae from Dalhousie Hills (Himachal Pradesh)

“…1z) and result in some pollen sterility (22.50%). The same diploid chromosome number, 2nϭ18, has been recorded by various researchers from India (Sharma and Bhattacharya 1959, Koul and Wakhlu 1976, Ahmad and Koul 1980, Hamal et al 1986, Pakistan (Khatoon 1991, Khatoon andAli 1993) and other parts of the world (Liu et al 1961, Pan et al 1985, Pimenov et al 1999, Alexeeva et al 2000.…”

Meiotic Studies in Some Species of Umbelliferae

“…This has regular 36 bivalents formation. Based on karyotype studies, Sharma and Bhattacharya (1959) have suggested its autoploid origin. Absence of any multivalent during prophase I of meiosis needs to be dis cussed in order to disprove or approve the views of Sharma and Bhattacharya (l. c.).…”

“…It can be concluded that from chromosomal point of view, the tribe Apieae is a little heterogenous. Sharma and Bhattacharya (1959) have also suggested that the placing of Carum, Pimpinella, Oenanthe, Foeniculum, Ligusticum and Seseli together, represents a heterogenous assemblage. The present studies, therefore, have strongly endorsed the idea of splitting the sub-family Apioideae into more tribes than at present, to satisfy a natural classification.…”

“…Notable contributions in the field of cytology of Indian Umbellifers have been made by Shah (1953), Sharma and Ghosh (1954), Sharma and Bhattacharya (1959) and Datta and Maite (1968). Similar other contributions in the family have been made from elsewhere by Bell and Constance (1957, 1961and 1966), Engstrand (1970, Constance, Chuang and Bell (1971) and Crawford and Hartman (1972).…”

Karyotype and Meiotic Behaviour of the Different Varieties (Cultivars) of the SpeciesPetroselinum Crispum(Mill.) A.W. Hill (Apiaceae)

“…MANSFELD (1959) has classified the wild and cultivated types. Preliminary investigation of the genus indicates a uniform chromosome number 2n = 22 (HAKANSSON 1953;HIROE 1955;GARDE and GARDE 1949;KoRY-DYUM 1967;MITSUKURI and KURAHORI 1959;SHARMA and BHATTACHARYYA 1959). A comparative study of the karyotype of the different varieties has been made to find out the mechanism of chromosomal evolution relevant to speciation.…”