Cytological Studies in Some North Indian Labiatae

Vij, S. P.; Kashyap, S. K.

doi:10.1508/cytologia.41.713

Cited by 24 publications

(11 citation statements)

References 11 publications

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“…Present findings corroborated with earlier reports on chromosome number (2nϭ36) of the species (Singh 1980, Bir andSaggoo 1980); however, it was also reported as nϭ16 (Mehra andGill 1972, Khosla andSobti 1985), nϭ16ϩ0-3B (Vij and Kashyap 1976), nϭ17 (Singh 1980) and nϭ32 (Tischler 1938).…”

Section: Meiotic Analysissupporting

confidence: 92%

Secondary Chromosome Associations in Ocimum basilicum L. and Ocimum tenuiflorum L.

Mukherjee

Datta

2005

CYTOLOGIA

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Section: Meiotic Analysissupporting

confidence: 92%

Secondary Chromosome Associations in Ocimum basilicum L. and Ocimum tenuiflorum L.

Mukherjee

Datta

2005

CYTOLOGIA

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“…Pushpangadan et al (1975) reported 2 cytotypes of O. canum with 2nϭ24 and 26 chromosomes, the former was introduced from Kenya while the latter was indigenous to India. Chromosome number 2nϭ34 (Pal 1971), 2nϭ64 (Sanjappa 1979) and 2nϭ64ϩ0-4 B (Vij and Kashyap 1976) have also been reported for the species.…”

Section: Meiotic Analysismentioning

confidence: 81%

“…Ocimum tenuiflorum-green type: The species had 2nϭ36 chromosomes always with an aver- Bir and Sagoo (1980) and Singh (1980) also reported 2nϭ36 chromosomes for the species but it was also stated to be as nϭ16 (Mehra andGill 1972, Khosla andSobti 1985), nϭ16ϩ0-3 B (Vij and Kashyap 1976), nϭ17 (Singh 1980) and nϭ32 (Tischler 1938).…”

Section: Meiotic Analysismentioning

confidence: 98%

Secondary Chromosome Associations in Ocimum spp.

Mukherjee

Datta

2006

CYTOLOGIA

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Summary Secondary association of chromosomes at metaphase I was noted in 61.94%, 60.00%, 50.38% and 21.74% meiocytes of Ocimum tenuiflorum-green type (2nϭ36), O. gratissimum (2nϭ40), O. canum (2nϭ26) and O. kilimandscharicum (2nϭ76) respectively. Secondary polyploidy has been attributed as the possible cause of secondary association of chromosomes and statistical analysis of cytological data revealed that the basic chromosome number in the species is 12 (xϭ6 for O. canum) with probable origin from xϭ6 through polyploidy.

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“…to have lead to the formation of sub-group Sanctum. Mehra and Gill (1972) and Vij and Kashyap (1976) have suggested that x=6, 7 and 8 sa a primary base numbers in family Labiatae and that other higher numbers known in this family seem to have evolved through aneuploidy, polyploidy, hybridisation etc. O. sanctum with 2n=32 is a tetraploid which possibly arose as an allotetraploid although there are no O. sanctum plant with 2n=16 chromosomes known to this date.…”

Section: Discussionmentioning

confidence: 99%