Articles
A polyploid pink and white shower tree, Cassia javanica, produces diploid progeny
Article number
1282_9
Pages
49 – 52
Language
English
Abstract
A purported tetraploid (2n=4x=56) plant of the pink and white shower tree, Cassia javanica, confirmed by guard cell measurement and root-tip chromosome count, was crossed to a diploid (2n=2x=28) plant of the same species to produce triploid (2n=3x=42) progeny that were expected to be sterile.
The progeny, however, from six crosses were 2x. Flow cytometry was used to help determine that the purported 4x parent plant was in fact a mixoploid, consistent with a 4-2-4 periclinal cytochimera having 4x epidermal and cortex tissues with a 2x tissue layer between giving rise to haploid gametes.
The progeny, however, from six crosses were 2x. Flow cytometry was used to help determine that the purported 4x parent plant was in fact a mixoploid, consistent with a 4-2-4 periclinal cytochimera having 4x epidermal and cortex tissues with a 2x tissue layer between giving rise to haploid gametes.
Authors
K.W. Leonhardt
Keywords
colchicine, tetraploid, flow cytometry, chimera
Groups involved
- Division Plant Genetic Resources, Breeding and Biotechnology
- Division Vine and Berry Fruits
- Division Temperate Tree Fruits
- Division Tropical and Subtropical Fruit and Nuts
- Division Horticulture for Human Health
- Division Ornamental Plants
- Division Vegetables, Roots and Tubers
- Commission Banana
- Working Group Biotechnology of Horticultural Species
- Division Temperate Tree Nuts
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