Cytological Studies of Some Helobiales of Kashmir Himalayas 1. Family Alismataceae

P. N. Mehra; T. K. Pandita

doi:10.1508/cytologia.49.295

Cytological Studies of Some Helobiales of Kashmir Himalayas 1. Family Alismataceae

P. N. Mehra, T. K. Pandita

Academic Institute

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5 Scopus citations

Abstract

The present communication deals with male meiosis and karyotypic analysis in five species of the two genera, Alisma and Sagittaria. the course of meiosis was investigated with great difficulty because of stickiness of chromosomes. Alisma plantago-aquatica and A. gramineum posssess n=7 chromosomes with 5 chromosome pairs belonging to median-submedian category and 2 pairs to terminal category, while A. lanceolatum is at the tetraploid level with n = 13. Both the species of Sagittaria sagittifolia and S. guayanensis possess a haploid number of n=ll chromosomes of which only 1 chromosome is of the median category whereas the other 10 belong to subterminal category. Karyotype evolution in the different taxa is discussed.

Original language	English (US)
Pages (from-to)	295-304
Number of pages	10
Journal	CYTOLOGIA
Volume	49
Issue number	2
DOIs	https://doi.org/10.1508/cytologia.49.295
State	Published - Jan 1984

ASJC Scopus subject areas

Animal Science and Zoology
Genetics
Plant Science
Cell Biology

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abstract = "The present communication deals with male meiosis and karyotypic analysis in five species of the two genera, Alisma and Sagittaria. the course of meiosis was investigated with great difficulty because of stickiness of chromosomes. Alisma plantago-aquatica and A. gramineum posssess n=7 chromosomes with 5 chromosome pairs belonging to median-submedian category and 2 pairs to terminal category, while A. lanceolatum is at the tetraploid level with n = 13. Both the species of Sagittaria sagittifolia and S. guayanensis possess a haploid number of n=ll chromosomes of which only 1 chromosome is of the median category whereas the other 10 belong to subterminal category. Karyotype evolution in the different taxa is discussed.",

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AB - The present communication deals with male meiosis and karyotypic analysis in five species of the two genera, Alisma and Sagittaria. the course of meiosis was investigated with great difficulty because of stickiness of chromosomes. Alisma plantago-aquatica and A. gramineum posssess n=7 chromosomes with 5 chromosome pairs belonging to median-submedian category and 2 pairs to terminal category, while A. lanceolatum is at the tetraploid level with n = 13. Both the species of Sagittaria sagittifolia and S. guayanensis possess a haploid number of n=ll chromosomes of which only 1 chromosome is of the median category whereas the other 10 belong to subterminal category. Karyotype evolution in the different taxa is discussed.

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Cytological Studies of Some Helobiales of Kashmir Himalayas 1. Family Alismataceae

Abstract

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