Challenges and prospects for a potential allohexaploid Brassica crop
Autor: | Muhammad Farooq, Weijun Zhou, Su Yang, Annaliese S. Mason, Daniela Quezada-Martinez, Faisal Islam, Kangni Zhang, Dandan Hu, Jun Zou |
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Rok vydání: | 2021 |
Předmět: |
0106 biological sciences
Genetic diversity business.industry Heterosis fungi Brassica food and beverages General Medicine Biology Crop species biology.organism_classification 01 natural sciences Biotechnology Crop Agriculture Genetics Ploidy business Agronomy and Crop Science New crop 010606 plant biology & botany |
Zdroj: | Theoretical and Applied Genetics. 134:2711-2726 |
ISSN: | 1432-2242 0040-5752 |
Popis: | The production of a new allohexaploid Brassica crop (2n = AABBCC) is increasingly attracting international interest: a new allohexaploid crop could benefit from several major advantages over the existing Brassica diploid and allotetraploid species, combining genetic diversity and traits from all six crop species with additional allelic heterosis from the extra genome. Although early attempts to produce allohexaploids showed mixed results, recent technological and conceptual advances have provided promising leads to follow. However, there are still major challenges which exist before this new crop type can be realized: (1) incorporation of sufficient genetic diversity to form a basis for breeding and improvement of this potential crop species; (2) restoration of regular meiosis, as most allohexaploids are genetically unstable after formation; and (3) improvement of agronomic traits to the level of “elite” breeding material in the diploid and allotetraploid crop species. In this review, we outline these major prospects and challenges and propose possible plans to produce a stable, diverse and agronomically viable allohexaploid Brassica crop. |
Databáze: | OpenAIRE |
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