Studies on Conditions for Cell Division and Embryogenesis in Isolated Pollen Culture of Nicotiana rustica

Studies on Conditions for Cell Division and Embryogenesis in Isolated Pollen Culture of Nicotiana... A method for the induction of a high rate of cell division and embryogenesis of Nicotiana rustica pollen was developed. Binucleate pollen grains were fractionated by Percoll density gradient (35/45%) centrifugation and cultured in 0.4 molar mannitol at 30°C (the first culture). After 3 days in culture pollen was recollected by a second Percoll fractionation (0/30%) and transferred to and cultured in a medium containing the Murashige-Skoog macro-elements, 0.4 molar mannitol, 40 millimolar galactose, 3 millimolar glutamine, and 5 micromolar ABA for 10 days (the second culture). The cell population consisting of about 80% dividing pollen was transferred to a Murashige-Skoog medium containing 0.4 molar mannitol, 3 millimolar glutamine, and no phytohormone (the third culture), where about 40% of dividing pollen developed into embryos or embryogenic calli. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Studies on Conditions for Cell Division and Embryogenesis in Isolated Pollen Culture of Nicotiana rustica

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Publisher
American Society of Plant Biologist
Copyright
Copyright © 1985 by the American Society of Plant Biologists
ISSN
1532-2548
eISSN
0032-0889
D.O.I.
10.1104/pp.79.1.90
Publisher site
See Article on Publisher Site

Abstract

A method for the induction of a high rate of cell division and embryogenesis of Nicotiana rustica pollen was developed. Binucleate pollen grains were fractionated by Percoll density gradient (35/45%) centrifugation and cultured in 0.4 molar mannitol at 30°C (the first culture). After 3 days in culture pollen was recollected by a second Percoll fractionation (0/30%) and transferred to and cultured in a medium containing the Murashige-Skoog macro-elements, 0.4 molar mannitol, 40 millimolar galactose, 3 millimolar glutamine, and 5 micromolar ABA for 10 days (the second culture). The cell population consisting of about 80% dividing pollen was transferred to a Murashige-Skoog medium containing 0.4 molar mannitol, 3 millimolar glutamine, and no phytohormone (the third culture), where about 40% of dividing pollen developed into embryos or embryogenic calli.

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