PubMed · 2026-05-25
Scientists reviewed what controls how much protein soybean seeds contain and how nutritious that protein is, finding that both genes and growing conditions (like temperature, daylight length, and water) strongly shape the outcome. The goal is to breed soybeans with more and better protein without sacrificing yield or oil content.
Soybeans have an inherent negative correlation between seed protein and oil content, making it difficult to improve one without sacrificing the other.
Environmental factors — including photoperiod, temperature, water availability, and nutrient supply — significantly influence final seed protein content and amino acid profile.
Low-latitude, distinct agro-climatic zones present unique challenges and opportunities for cultivating high-protein soybean varieties, highlighting the importance of genotype-by-environment interactions.
