青稞抗寒生理与分子机制研究进展

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中图分类号 S512.3 文献标志码A 文章编号 1007-7731（2026）07-0014-04

DO1号 10.16377/j.cnki.issn1007-7731.2026.07.004

Research progress on physiological and molecular mechanisms of cold resistance in hulless barley

Yang ChunQiao Yunxiang Zhuo Ga （College of Plant Sciences，Xizang Agriculture and Animal Husbandry University，Linzhi 86ooo， China）

AbstractAs an important food crop in plateau regions，dissecting the cold resistance mechanism of hulless barley iscrucialforensuring regional foodsecurityandindustrialdevelopment.Thispapersystematicallyreviews the adaptability，physiological responses，molecular mechanisms，and research applicationsof huless barleyunder lowtemperature stress.In termsof adaptabilityand physiological responses，hullessbarley exhibits strong tolerance to alpine environments and can maintain basic metabolism even at It forms a synergistic defense system by dynamically regulating antioxidant enzyme activities，accumulating osmotic adjustment substances，and enhancing cell membrane stability，thereby sustaining metabolic functions underlow temperatures.At the molecular mechanism level， the ICE1-CBF signaling pathwayserves as acore hub in the low-temperature response.It enhances plant stress resistance by cascadingly regulating the expression of downstream cold-responsive genes （ COR family）.Meanwhile，the （204号 HvPrx2 gene maintains redox homeostasis by scavenging reactive oxygen species.Multiple genes function coordinately to achieve low-temperature adaptation.In terms of application，based on the research on physiological responses and molecular mechanisms underlow-temperature stress，targeted breeding of alpine adaptable varieties （such as ‘Kunlun No.12’and‘Zangqing 17'） can be carried out，and cultivation techniques can be improved by appropriately advancing the sowing date of hulless barley and adopting degradable plastic film mulching cultivation technology，so as to promote the synthesis and accumulation of osmotic substances and increase the seed germination rate.This review provides a reference for the research and application of cold resistance mechanisms in hulless barley.

Keywordshulless barley; cold resistance mechanism; physiological responses; molecular regulation

青稞适宜生长于高原清凉气候区，是西藏自治区重要的粮食作物之一，种植历史悠久1]。（剩余5796字）