TY - JOUR N2 - Our cytomorphological study of various populations of Elsholtzia ciliata (Lamiaceae) collected from high-altitude sites of Kashmir Himalaya revealed two euploid cytomorphotypes, diploid (n=8) and tetraploid (n=16), growing sympatrically but inhabiting two different habitats. This is the first report of tetraploid (4×) E. ciliata from the Indian subcontinent. We found the course of meiois to be normal in diploids, but tetraploid individuals showed chromosome and meiotic irregularities: cytomixis at early prophase I, stickiness at metaphase I, and chromosome bridges at anaphase I. In tetraploids, 23 of the 26 pollen mother cells observed at metaphase I showed 0-6 quadrivalents, suggesting that the tetraploid is a segmental allopolyploid. Microsporogenesis was also abnormal in tetraploids, showing the formation of triads. All these anomalies are conducive to lower reproductive potential (40.70%) in tetraploids than in diploids (90.50%). Significant morphological differences between the two cytotypes are presented. L1 - http://www.czasopisma.pan.pl/Content/81755/PDF/08_malik.pdf L2 - http://www.czasopisma.pan.pl/Content/81755 PY - 2012 IS - No 1 DO - 10.2478/v10182-012-0008-9 KW - Cytomorphotype KW - chromosome KW - diploid KW - tetraploid KW - Elsholtzia ciliata KW - quadrivalents KW - Kashmir Himalaya KW - chromosome stickiness A1 - Malik, Reyaz Ahmad A1 - Gupta, Raghbir Chand A1 - Kumari, Santosh PB - Biological Commission of the Polish Academy of Sciences – Cracow Branch VL - vol. 54 DA - 2012 T1 - Cytogenetic Diversity of Elsholtzia Ciliata Benth. (Lamiaceae) From Kashmir Himalaya UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/81755 T2 - Acta Biologica Cracoviensia s. Botanica ER -