Abstract

Research Article

Micropropagation and cytological studies of Aole vera Linn

Sweety Majumder*, Animesh Biswas and Mohammad Mahbubur Rahman

Published: 30 September, 2022 | Volume 6 - Issue 3 | Pages: 126-132

Aloe vera Linn. is an essential medicinal plant. In this present research work, a protocol of 
in vitro regeneration and karyomorphological analysis of Aloe vera was developed using different concentrations and compositions of media. Shoot apices of field-grown plants were used as explant and aseptically cultured on Murashige and Skoog (MS) medium fortified with different concentrations and combinations of auxins (IAA and NAA) and cytokinins (BAP and Kn). The highest number of multiple shoot buds (4.36 ± 0.07) was obtained from MS + 2.0 mg/l BAP + 1.0 mg/l IAA and induced shoot buds underwent rapid elongation (4.24 ± 0.06 cm) on the same medium composition. Half strength MS media with 2.0 mg/l IBA was suitable for induction and proliferation (6.31 ± 0.05) of roots and 95% of plantlets were acclimatized to field conditions successfully. Somatic chromosome numbers of mother and in vitro grown plants were confirmed to be 2n = 14. Chromosome length ranged from 4.28 - 13.74 µm in the naturally grown plants and 4.46 - 14.1 µm for in vitro grown plants. The total form percent (TF%) of mother and in vitro grown plants was 41.69% and 42.23%, respectively. The karyotype formula of in vivo grown plants was 2n = 14 = 4Lsm + 6Mm + 4Sm, whereas that of the micropropagated plants was 2n = 14 = 4Lsm + 4Mm + 6Sm. The frequency of the chromosome having arm more than 2:1 was 0.08 for mother plants and 0.15 for in vitro grown plants. Therefore, the karyotype of both plants falls into the 2B symmetrical type based on Stebbins classification (1971).

Read Full Article HTML DOI: 10.29328/journal.jpsp.1001085 Cite this Article Read Full Article PDF

Keywords:

Aloe vera; Explant; In vitro propagation; Chromosome; Ideogram; Karyotype

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