title: Improved alliin yield in somatic embryos of Allium sativum L. (cv. Yamuna safed) as analyzed by HPTLC.
abstract: Direct somatic embryo formation (without intervening callus) from garlic clove basal tissue was induced in which the influence of plant growth regulators (PGRs) on various explants was examined. Medium added with 2.0 mg/l 6-benzylaminopurine (BAP) and 0.5 mg/l 2,4-dichlorophenoxyacetic acid (2,4-D) were the most effective PGR combination for somatic embryo induction. It induced embryos directly in 85.5% of the basal clove explant. Callus induction was also obtained from other parts of explant and 2.0 mg/l 2,4-D induced callusing in 86.5% of the inoculated explants. Protein, amino acid and alliin content were measured in callus and in embryos. Somatic embryos had more soluble protein and free amino acid compared to callus. HPTLC analysis revealed that alliin was significantly high in somatic embryos compared to undifferentiated callus tissue; the content was even more in older embryos. The present study of Allium indicates that the event of morphogenetic development including in vitro embryogeny can effectively be analysed by monitoring the changes of biochemical profiles.
authors.affiliation: Hamdard University Department of Botany, Cellular Differentiation and Molecular Genetics Section New Delhi 110 062 India.
authors.forename: S A
authors.initials: SA
authors.lastname: Nasim
authors.forename: A
authors.initials: A
authors.lastname: Mujib
authors.forename: K
authors.initials: K
authors.lastname: Rashmi
authors.forename: F
authors.initials: F
authors.lastname: Samar
authors.forename: A
authors.initials: A
authors.lastname: Junaid
authors.lastname: Mahmooduzzafar
mesh_terms: D002454:Cell Differentiation; D002855:Chromatography, Thin Layer / Q000379:methods*; D003545:Cysteine / Q000031:analogs & derivatives* / Q000378:metabolism; D005737:Garlic / Q000166:cytology / Q000196:embryology* / Q000378:metabolism*; D010937:Plant Growth Regulators / Q000378:metabolism
chemical_list: D010937:Plant Growth Regulators; C006453:alliin; D003545:Cysteine