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Studies on Colchicine Induced Chromosome Doubling for Enhancement of Quality Traits in Ornamental Plants

1
Barani Agricultural Research Institute, Chakwal 48800, Pakistan
2
Department of Horticulture, PMAS Arid Agriculture University, Rawalpindi, Punjab 46000, Pakistan
3
Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy
*
Authors to whom correspondence should be addressed.
Plants 2019, 8(7), 194; https://doi.org/10.3390/plants8070194
Received: 13 May 2019 / Revised: 24 June 2019 / Accepted: 25 June 2019 / Published: 28 June 2019
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Abstract

Polyploidy has the utmost importance in horticulture for the development of new ornamental varieties with desirable morphological traits referring to plant size and vigor, leaf thickness, larger flowers with thicker petals, intense color of leaves and flowers, long lasting flowers, compactness, dwarfness and restored fertility. Polyploidy may occur naturally due to the formation of unreduced gametes or can be artificially induced by doubling the number of chromosomes in somatic cells. Usually, natural polyploid plants are unavailable, so polyploidy is induced synthetically with the help of mitotic inhibitors. Colchicine is a widely used mitotic inhibitor for the induction of polyploidy in plants during their cell division by inhibiting the chromosome segregation. Different plant organs like seeds, apical meristems, flower buds, and roots can be used to induce polyploidy through many application methods such as dipping/soaking, dropping or cotton wool. Flow cytometry and chromosome counting, with an observation of morphological and physiological traits are routine procedures for the determination of ploidy level in plants. View Full-Text
Keywords: chromosomes; colchicine; diploid; induction; ornamental; polyploidy; tetraploid chromosomes; colchicine; diploid; induction; ornamental; polyploidy; tetraploid
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Manzoor, A.; Ahmad, T.; Bashir, M.A.; Hafiz, I.A.; Silvestri, C. Studies on Colchicine Induced Chromosome Doubling for Enhancement of Quality Traits in Ornamental Plants. Plants 2019, 8, 194.

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