冬小麦新品系‘白鹿181’对极端冷冻胁迫的生理响应  

Physiological Response of New Winter Wheat Line ‘Bailu 181’to Extreme Freezing Stress

作　　者：郭家宏 陈怡平[1] 李英梅 张峰 张安静 李晓丽 杨子光 GUO Jiahong;CHEN Yiping;LI Yingmei;ZHANG Feng;ZHANG Anjing;LI Xiaoli;YANG Ziguang(State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710061,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shaanxi Institute of Bioagriculture,Xi’an 710061,China;Xianyang Institute of Agriculture Science,Xianyang Shaanxi 712000,China;Dengzhou Seed Technology Service Station,Dengzhou Henan 474150,China;Luoyang Academy of Agriculture and Forestry Sciences,Luoyang Henan 471023,China)

机构地区：[1]中国科学院地球环境研究所,黄土科学全国重点实验室,西安710061 [2]中国科学院大学,北京100049 [3]陕西省生物农业研究所,西安710061 [4]咸阳农业科学院,陕西咸阳712000 [5]邓州市种子技术服务站,河南邓州474150 [6]洛阳市农林科学院,河南洛阳471023

出　　处：《西北农业学报》2025年第1期15-23,共9页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家自然科学基金(42041005)。

摘　　要：为检验冬小麦新品系‘白鹿181’对极端冷冻胁迫的适应能力,以‘洛旱7号’与‘小偃22’为对照,研究‘白鹿181’对极端冷冻的生理响应。研究发现:(1)在极端冷冻胁迫下,‘小偃22’叶片和根系中的自由基和MDA含量>‘洛旱7号>‘白鹿181’;‘白鹿181’叶片和根系中SOD、CAT、POD、APX酶活性>‘洛旱7号’>‘小偃22’;(2)‘白鹿181’叶片中的可溶性蛋白含量高于‘小偃22’13.9%(P>0.05),高于‘洛旱7号’5.5%(P>0.05);‘白鹿181’根系中NO含量高于‘小偃22’18.7%(P<0.05),高于‘洛旱7号’3%(P>0.05);(3)‘白鹿181’根系中NOS活性高于‘洛旱7号’8.5%(P>0.05),高于‘小偃22’14.3%(P>0.05)。研究结果表明,与‘洛旱7号’和‘小偃22’相比,‘白鹿181’对极端冷冻胁迫具有较强的抗性,且‘白鹿181’较适宜于关中平原等黄河中游地区种植。The adaptability of new winter wheat line‘Bailu181’to adversity was tested by investigating its physiological response and yield performance under extreme freezing stress.Control materials,‘Luohan7’and‘Xiaoyan22’,were sown under the same conditions in Dali County in Guanzhong Plain.The results showed that the levels of free radical and MDA contents in both leaves and roots exhibited the following order:‘Xiaoyan22’>‘Luohan7’>‘Bailu181’;SOD,CAT,POD and APX enzyme activities in both leaves and roots followd the order:‘Bailu181’>‘Luohan7’>‘Xiaoyan22’;the soluble protein content in the leaves of‘Bailu181’was 13.9%higher than that of‘Xiaoya22’(P>0.05)and 5.5%higher than that of‘Luohan7’(P>0.05);the NO content in the roots of‘Bailu181’was 18.7%higher than that of‘Xiaoyan22’(P<0.05),and 3%higher than that of‘Luohan7’(P>0.05).Nitric oxide synthase(NOS)activity in the roots of‘Bailu181’was 8.5%higher than that of‘Luohan7’(P>0.05),and 14.3%higher than that of‘Xiaoyan22’(P>0.05).These findings suggest that‘Bailu181’is more resistant to extreme freezing stress compared to the materials and is suitable for cultivation in the Guanzhong Plain and other areas in the middle reaches of the Yellow River.

关 键 词：冬小麦 ‘白鹿181’新品系 极端环境 冷冻胁迫 生理响应 ‘小偃22’ ‘洛旱7号’ 

分 类 号：S512.11[农业科学—作物学]