In a recent journal article, researchers has documented the unique characteristics of heirloom cultivars, such as productivity, stress tolerance, proximate composition, sensory quality, and flavor.
Heirloom crop cultivars are traditional cultivars that have been grown for a long time (>50 years), and that have a heritage that has been preserved by regional, ethnic, or family groups.
In modern cultivars the crop nutritional quality has been compromised by the emphasis on edible yield and through the loss of biodiversity due to the introduction of high‐yielding, uniform cultivars. As a contrast, heirlooms may offer a welcome alternative in certain markets.
Many decades ago, heirloom cultivars appeared to be relics of an earlier age. However, a renewed interest in heirloom cultivars has helped foster the sense that they may play an important role in future crop breeding efforts.
New market channels have emerged for heirlooms and have re‐energized this unique repository of crop germplasm. As they possess unique flavors, colors, texture, stress tolerances, and forms, heirlooms may represent an important collection of traits that can be of immediate value in crop production and as a source of breeding germplasm for future cultivars.
The goal of the review has been to document some example of the unique characteristics of heirlooms, with the hope of further encouraging breeders to identify their useful exotic traits and introgress these traits into breeding programs aimed at developing high‐quality, consumer‐oriented cultivars.