Online ISSN : 1348-7019
Print ISSN : 0011-4545
Regular Article
Distribution Pattern, Variations of Morphology and Chromosome Numbers of Sium latijugam C. B. Clarke (Apiaceae) from the Kashmir Himalayas
Syed Mudassir Jeelani M. A. A. SiddiqueUmer Farooq
ジャーナル オープンアクセス

2017 年 82 巻 4 号 p. 369-374


The present study was performed for the Himalayan medicinal species Sium latijugam on male meiosis, morphological parameters and distribution pattern of diploid as well as tetraploid cytotypes. Both diploid (2n=12) and tetraploid (2n=24) cytotypes were found in Kashmir, however, the tetraploid cytotype is new addition to the species for the first time. The tetraploids were restricted to higher altitudes and characterized by abnormal meiosis leading to high pollen sterility and formation of variable sized pollen grains. Additionally tetraploids were morphologically more luxuriant in comparison to their diploid counterparts.

© 2017 The Japan Mendel Society
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