Recent advances in generation of doubled haploid plants for genetic improvement in solanaceous vegetable crops.
Baliyan N, Upadhyay P, Murugan T, Srivastava A, Singh S
Crispr
Faster, more precise plant breeding could soon bring you tomatoes, peppers, and potatoes that are better equipped to survive heat waves, new diseases, and unpredictable weather — meaning more reliable harvests and potentially lower grocery prices.
When plant breeders want to create a new, stable variety of a vegetable, they traditionally need many generations of careful cross-pollination — a process that can take 10–12 years. This research explores a shortcut: using CRISPR gene editing alongside lab techniques that coax a single plant cell into growing into a whole plant with perfectly matched genetic pairs from the start. The result is a stable, breed-true plant variety in a fraction of the time, which is especially promising for popular crops like tomatoes, peppers, potatoes, and eggplant.
Key Findings
CRISPR/Cas9 can be used to trigger haploid embryo formation in plants by editing key genes (DMP, MTL, BBM, ECS), offering a faster path to stable breeding lines than conventional methods.
Both lab-based (in vitro) techniques — androgenesis from pollen and gynogenesis from egg cells — and whole-plant (in vivo) approaches are being actively developed for solanaceous crops, with success depending on factors like growth stage, culture medium, and temperature pretreatment.
Current protocols for chromosome doubling (needed to restore fertility in haploid plants) remain inadequate for commercial solanaceous crops and represent the primary bottleneck to widespread adoption of this technology.
chevron_right Technical Summary
Scientists are combining gene-editing technology (CRISPR) with traditional plant breeding techniques to rapidly produce pure-breeding lines of important vegetable crops like tomatoes, peppers, potatoes, and eggplant — potentially cutting breeding timelines from decades to just a few years.
Abstract Preview
Genotype-specific protocols and advancements focusing on CRISPR/Cas9-based haploid induction for doubled haploid (DH) production are poised to revolutionize plant breeding for faster genetic improv...
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