Cytogeography of Chlorophytum in Liberia

Baldwin, J. T.; Speese, Bernice M.

doi:10.1002/j.1537-2197.1951.tb14807.x

Cited by 15 publications

(8 citation statements)

References 3 publications

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“…The observation of 14 bivalents at diakinesis during mei- otic cell division (Anonymous 2002), though tends us to believe that C. borivilianum is an allotetraploid, but in our present observations 28 chromosomes could be resolved into 7 distinct groups, thereby indicating the nature of autotetraploidy rather than allotetraploidy. We also derive support for our observations on autotetraploid nature of C. borivilianum from the earlier reports of Baldwin and Speese (1951) who reported occurrence of univalents and trivalents, a characteristic feature of autotetraploids, during meiotic analysis of some related species like C. orchidastrum and C. viviparum. C. borivilianum mostly reproduce by predominant vegetative propagation.…”

Section: Discussionsupporting

confidence: 91%

“…Similar opinion was also expressed earlier (Anonymous, 2002). Baldwin and Speese (1951) and many other workers like Boraiah (1967), Mathew and Thomas (1974), Kanchan and Geeta (1977), Thomas (1960), Naik (1977a, b) and Sarkar et al (1973) have also reported the occurrence of tetraploidy in the genus Chlorophytum, majority of them based on xϭ7 giving a series of polyploids with 2nϭ14, 28, 56 etc. in various species.…”

Section: Discussionmentioning

confidence: 92%

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Cytological Characterization of a Rare Medicinal Herb 'Safed Musli' (Chlorophytum borivilianum Sant. et Fernand.)

Joshi

Kumar²,

Rao³

et al. 2006

CYTOLOGIA

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Summary Karyomorphological studies were carried out in seven accessions of Chlorophytum borivilianum collected from the states of Rajasthan and Madhya Pradesh. All the accessions were found to be tetraploid with 2nϭ28 chromosomes which were resolved into 7 groups, each comprising 7 homologous chromosomes. All the accessions had submetacentric chromosomes in high proportion while metacentrics, telocentrics and subtelocentrics recorded were very few in number. Nucleolar chromosomes were recorded in 5 (PBL-1, PBL-2, PBL-4, PBL-5 and PBL-7) out of the 7 accessions studied. The karyotypes of all the accessions were more or less symmetrical. The role of karyotypic variation in speciation and evolution of the genus Chlorophytum has been discussed in detail.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 92%

Cytological Characterization of a Rare Medicinal Herb 'Safed Musli' (Chlorophytum borivilianum Sant. et Fernand.)

Joshi

Kumar²,

Rao³

et al. 2006

CYTOLOGIA

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“…Many species of this genus have been studied from cytotaxonomic and cytogeographic points of view (Baldwin and Speese 1951, Mukherjee 1957, Naik 1976, 1977. The basic chromosome number for the genus has been suggested to be x=8 and 7 , possibly derived as a secondary number from x=4 (Patil et al 1987) .…”

mentioning

confidence: 99%

Chromosomal Behaviour and Seed Production in Chlorophytum comosum (Liliaceae).

1993

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“…It is also evident from these studies that under the 8-basic series, diploids with 2n=16 are almost the rule as in C. alismifolium (Baldwin and Speese 1951); C. tuberosum (Kumar and Rao 1958, Sheriff 1967, Dutta and Mitra 1968 …”

Section: Introductionmentioning

confidence: 78%