Examples of contrasting onion bulb-shape indices (ratio of diameter over height) of two F2 progenies from the cross of doubled haploid (DH) 1104 and DHCU66619. Credit: J. Amer. Soc. Hort. Sci. (2024).

Body shape and size are typically described using measures such as body mass index (BMI) and waist circumference, which predict disease risks in adults. However, this approach may underestimate ...