speed-breeding
Speed-breeding is a technique that accelerates plant growth cycles by using extended photoperiods and optimized growing conditions to compress generation times from months to weeks. This allows researchers to rapidly cycle through multiple generations per year, dramatically shortening the timeline for crop improvement programs. By enabling faster trait selection and genetic studies, speed-breeding has become a powerful tool for accelerating the development of stress-tolerant and high-yielding crop varieties.
open_in_new WikipediaPubMed · 2026-04-22
Researchers created a faster-growing version of the standard barley strain used in genetics labs, cutting its breeding cycle by 25% while keeping the traits that make it easy to genetically modify. This new strain, called GP-rapid, will let scientists develop improved barley varieties more quickly.
GP-rapid completes a generation in 63 days under speed breeding conditions, 25% faster than the original Golden Promise's 84-day cycle
The new strain carries only a ~0.6 megabase-pair introgression (a tiny DNA swap) at a single chromosomal location, making it nearly genetically identical to the original
GP-rapid retains full Agrobacterium-mediated transformability and CRISPR/Cas9 editing capability, confirmed in parallel transformation experiments
