Cytological study on pollen grain mitosis of Setcreasea purpurea Boom
Paper Details
Cytological study on pollen grain mitosis of Setcreasea purpurea Boom
Abstract
Setcreasea purpurea Boom (Syn. Tradescantia pallida Rose D.R. Hunt Cav) is widely distributed as an ornamental plant. It is a member of Commelinaceae family which is identified and poorly understood taxa. The objective of this present investigation is to study the cytology of pollen grain mitosic of Setcreasea purpurea Boom. The study based on the nuclear phenotype, characterization of karyotypes using total chromosome length (TCL), Total frequency (TF) in pollen grain of setcreasea purpurea Boom which will help to understood the taxa. In order to study nuclear phenotype, nuclear structure, nuclear volume, mitotic index were estimated. Nuclear phenotype and karyotype analysis was made from the pollen grain of setcreasea puurpurea Boom. To estimate the chromosome number and karyotype analysis anther of setcreasea purpurea were treated with acetocarmin. Cytological studies of pollen grain mitosis have shown that the expected haploid chromosome number was n=12. In this present investigation the karyotype formula was found to be 2Lm+6Lm + 4Lst. Present investigation showed that the karyotype was bimodal and assymetrical with reticulate chromosome. Presence of 4 sub-terminal chromosomses shows it advanceness and process of undergoing structural evolution.
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Md. Saifur Rahman, Golam Kabir, Mst. Sharmin Khatun, Sagorika Biswas, Md. Mamunur Rashid Sarkar (2020), Cytological study on pollen grain mitosis of Setcreasea purpurea Boom; IJB, V17, N1, July, P141-149
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