Anna Stepanova^1,*, Maria Malunova¹, Svetlana Salamaikina¹, Renat Selimov², Aleksandra Solov’eva¹

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 543-552, 2021, DOI:10.32604/phyton.2021.013223 - 07 February 2021

Abstract Rhodiola quadrifida is a rare mountain medicinal plant whose root extracts are used in traditional Chinese medicine as a hemostatic, antitussive, and tonic in the treatment of gynecological diseases. The aim of the study was to obtain R. quadrifida cultures at different degrees of differentiation in vitro and compare their growth characteristics and the content of salidroside and rosavin. Hairy roots were obtained by incubating cotyledons and hypocotyls in a suspension of Agrobacterium rhizogenes strain A4. The presence of the rolB and rolC genes was proven by polymerase chain reaction. The obtained roots were cultivated in Murashige-Skoog medium (MS).… More >

M. Y. Ovando-Domínguez¹, M. C. Luján-Hidalgo¹, D. González-Mendoza², A. A. Vargas-Díaz³, N. Ruiz-Lau^1,4, F. A. Gutiérrez-Miceli¹, C. A. Lecona-Guzmán^1,*

Phyton-International Journal of Experimental Botany, Vol.88, No.2, pp. 139-147, 2019, DOI:10.32604/phyton.2019.06546

Abstract Callus cultures of Annona muricata and Annona purpurea were induced in Murashige and Skoog (MS) medium supplemented with different concentrations of 1-naphthylacetic acid (NAA), 6-benzyladenine (BA) and 2,4-dichlorophenoxyacetic acid (2,4-D) utilized hypocotyls with explant. The highest percentage of callus formation was the treatment supplemented with 3 mg L^-1 NAA for A. muricata (100%) while for A. purpurea in lower percentage (75%). BA stimulated the formation of shoots in all the evaluated concentrations, being the concentration of 2 mg L^-1 the one that induced the greater formation of shoots for A. muricata (23 shoots/explant) and A. purpurea (28 shoots/explant). The content… More >

A. C. PONTAROLI, E. L. CAMADRO

BIOCELL, Vol.29, No.3, pp. 313-317, 2005, DOI:10.32604/biocell.2005.29.313

Abstract Callus growth and plant regeneration from long-term callus cultures were studied in two elite clones of Asparagus officinalis cv. Argenteuil, to establish a suitable protocol for a prospective in vitro selection program. Callus initiation and growth was evaluated on MS medium with 3% sucrose, 0.9% agar, 1 mg.l^-1 kinetin, and three levels of 2,4-D. The highest callus relative growth was obtained on medium with 1.5 mg.l^-1 2,4-D and 1 mg.l^-1 kinetin. Shoot primordia (SP) induction from >18-months-old calluses was evaluated on several media; the highest percentage of SP induction (89%) and average number of SP per callus (8.6) were More >