Researchers using genetic science to make strawberries tastier

By Stephen Beech via SWNS

Tastier strawberries could soon be on the menu thanks to the latest genetic science breakthrough.

It will allow breeding programs to enhance fruit quality without compromising flavor or color, say French researchers.

They explained that strawberry breeding faces the challenge of balancing genetic diversity with the improvement of fruit quality traits such as firmness and flavor.

However, traditional breeding methods have often struggled to meet those dual demands.

However, recent advancements in genetic research, particularly genome-wide association studies (GWAS), have provided new opportunities to explore and enhance the key traits in fruit.

The team from the University of Bordeaux , in collaboration with software network Invenio, say they have made "significant stride"s in strawberry research following an in-depth study on the genetic factors that influence fruit quality.

Their study, published in the journal Horticulture Research , explored the genetic evolution of strawberry diversity.

The researchers identified molecular markers for breeding programs, aiming to enhance the fruit's weight, firmness, composition, and appearance.

They uncovered "significant" genetic markers linked to key fruit quality traits including weight, firmness, and glossiness.

Utilizing GWAS, the researchers identified 71 associations with 11 different quality traits, validating known markers and discovering new quantitative trait loci (QTL).

Three of the six selective sweeps identified are associated with glossiness and skin resistance - traits that enhance fruit appeal and shelf life.

The French team says their findings demonstrate "substantial improvements" in breeding targets achieved across European and American cultivars.

The study also highlighted regions of reduced genetic diversity due to selection pressure, underscoring the impact of breeding on genetic variation.

Dr. Béatrice Denoyes, one of the lead researchers, says the research emphasizes the value of untapped genetic resources in European strawberries, offering "promising avenues" for breeding programs to enhance fruit quality without compromising flavor or color.

She said: "This study offers a comprehensive view of strawberry genetic diversity and its impact on fruit quality.

"The identification of new genetic markers will significantly aid breeding programs focused on improving fruit traits that are important to both growers and consumers."

Dr. Denoyes added: "The findings from this study have substantial implications for strawberry breeding programs.

"By utilizing the newly identified genetic markers, breeders can more effectively select traits that enhance fruit quality, such as firmness and glossiness.

"This will not only improve the consumer experience but also reduce post-harvest losses, contributing to more sustainable agricultural practices."

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