This cold-hardy corn variety is also more nutrient-rich
Ramazan S, Beniwal R, Dar ZA, Shah MA
Crop Improvement
If you've ever wondered why some corn struggles after a late frost while other stalks push through fine, this study shows the toughest variety also loads up on more iron, zinc, and potassium, meaning cold tolerance and nutrition can go hand in hand.
Researchers grew three types of corn from a cold mountain region and studied their chemistry to see what makes some handle cold snaps better than others. The cold-tough variety, called KG-3, turned out to have higher levels of iron, zinc, and potassium plus a unique mix of protective plant compounds, while the cold-sensitive varieties leaned on simpler sugars and fats instead. The team also found that soaking seeds in a mix of potassium nitrate and hydrogen peroxide before planting boosted germination to 100 percent, especially for the less cold-hardy varieties.
Key Findings
68 metabolites identified across genotypes; cold-tolerant KG-3 uniquely produced 8 metabolites including secondary compounds with pharmacological potential, while moderately tolerant SMC-4 had 23 unique compounds and cold-susceptible SMC-7 had 19.
KG-3 (cold-tolerant) showed elevated potassium, iron, and zinc levels compared to the other genotypes, linking micronutrient content to stress resilience.
A seed priming treatment of 50 mmol/L potassium nitrate plus 8 mmol/L hydrogen peroxide achieved 100% germination, with the cold-susceptible and moderately tolerant genotypes responding more strongly than the cold-tolerant one.
chevron_right Technical Summary
Scientists compared three maize varieties from the Kashmir Himalayas and found that the one best suited to cold weather also packs more potassium, iron, and zinc, and produces a distinct set of protective compounds, offering breeders a genotype that could deliver both cold hardiness and better nutrition.
Abstract Preview
Original paper
Metabolomic and ionomic signatures of maize (Zea mays L.) genotypes exhibiting differential temperature tolerance.
Maize (Zea mays L.) is a major cereal crop of global importance, valued not only for its nutritional importance but also for its diverse phytochemical composition. Metabolomics offers a comprehensi...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Gene editing removes 97% of celiac-triggering proteins from bread wheat
It could mean that people with celiac disease — roughly 1 in 100 worldwide — may one day safely eat bread made from real wheat, without sacrificing the taste...
Maize, also known as corn in North American English, is a tall stout grass that produces cereal grain. The leafy stalk of the plant gives rise to male inflorescences or tassels which produce pollen, and female inflorescences called ears. The ears yield grain, known as kernels or seeds. In modern ...