Journal ArticleDOI
Chemically induced polyploidization in Spathiphyllum wallisii Regel through somatic embryogenesis
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TLDR
Polyploid Spathiphyllum wallisii Regel 'Speedy' plants were obtained from somatic embryos induced on anther filaments exposed to mitosis inhibitors, and flow cytometry was applied as an unambiguous screening tool.Abstract:
Polyploid Spathiphyllum wallisii Regel 'Speedy' plants were obtained from somatic embryos induced on anther filaments exposed to mitosis inhibitors. Primary embryos yielded less polyploid plantlets than secondary embryos. Colchicine could be efficiently replaced by oryzalin or trifluralin (10 µM), resulting in an average yield of 5% polyploids. The mitosis inhibitors were directly added to the induction medium. Morphological differences between diploid and tetraploid S. wallisii hybrids were observed. Throughout our experiments flow cytometry was applied as an unambiguous screening tool. Ploidy breeding within the genus Spathiphyllum holds promises towards the development of tetraploid hybrids with an altered morphology, or triploids with a reduced fertility.read more
Citations
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Journal ArticleDOI
Mitotic chromosome doubling of plant tissues in vitro
TL;DR: This review gives an overview of the common methods of chromosome doubling in vitro, the history of the technique, and progress made over the years.
Journal ArticleDOI
Influence of ploidy level on morphology, growth and drought susceptibility in Spathiphyllum wallisii
Katrijn Van Laere,Soraya de Carvalho França,Hein Vansteenkiste,Johan Van Huylenbroeck,Kathy Steppe,Marie-Christine Van Labeke,Marie-Christine Van Labeke +6 more
TL;DR: Measurements of stomatal resistance, leaf water potential, relative water content and proline content indicated that the tetraploid genotypes were more resistant to drought stress compared with the diploids.
Journal ArticleDOI
Trifluralin-mediated polyploidization of Rosa chinensis minima (Sims) Voss seedlings
TL;DR: Considerations in selecting germplasm and generating somatically-induced polyploids from seedlings versus clones for use in breeding are discussed and polyploidization consistently occurred from LI inward.
Journal ArticleDOI
In vitro induction of tetraploids in Phlox subulata L.
TL;DR: Tetraploid plants of Phlox subulata L. were induced successfully by treating shoot tips in vitro with colchicine, but the percentages of tetraploids varied among different treatments, from 25.0% to 75.0%.
Journal ArticleDOI
In vitro induction of polyploidy by colchicine treatment of shoots and preliminary characterisation of induced polyploids in two Miscanthus species
TL;DR: The tetraploid forms of two genotypes were found to have significantly greater values of tuft weight, significantly greater stem diameter and, in the case of one genotype, even significantly taller stems when compared with controls, suggesting they might be valuable materials in breeding efforts to create high-yielding Miscanthus forms.
References
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Journal ArticleDOI
A revised medium for rapid growth and bio assays with tobacco tissue cultures
Toshio Murashige,Folke Skoog +1 more
TL;DR: In vivo redox biosensing resolves the spatiotemporal dynamics of compartmental responses to local ROS generation and provide a basis for understanding how compartment-specific redox dynamics may operate in retrograde signaling and stress 67 acclimation in plants.
Journal ArticleDOI
Rapid flow cytometric analysis of the cell cycle in intact plant tissues.
David W. Galbraith,Kristi R. Harkins,Joyce M. Maddox,Nicola M. Ayres,Dharam P. Sharma,Ebrahim Firoozabady +5 more
TL;DR: The amount of nuclear DNA in the homogenates of monocotyledonous and dicotylingonous plants was accurately and rapidly determined by flow microfluorometry, and the distribution of nuclei involved in the cell cycle was charted for tissues selected from different physical locations or developmental stages.
Journal ArticleDOI
Haploid Plants from Pollen Grains
J. P. Nitsch,C. Nitsch +1 more
TL;DR: A method is presented by which hundreds of haploid plants of various species of Nicotiana can be raised from pollen grains, structures which develop in stages similar to those of zygotic embryos.
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