甘肃雨养区不同品种青贮玉米生理特性及水分利用率评价  

Evaluation on Physiological Characteristics and Water Use Efficiency for Different Silage Maize Varieties in Gansu Rain-Fed Area

作　　者：齐帅 秦伟娜 焦婷[1] 师尚礼[1] 高永权 王虎宁 李淑艳 QI Shuai;QIN Wei-na;JIAO Ting;SHI Shang-li;GAO Yong-quan;WANG Hu-ning;LI Shu-yan(College of Pratacultural Science,Gansu Agricultural University/Key Laboratory for Grassland Ecosystem,Ministry of Educartion/Sino-US Grassland Animal Husbandry Sustainable Development Research Center,Lanzhou,Gansu Province 730070,China)

机构地区：[1]甘肃农业大学草业学院/草业生态系统教育部重点实验室/中-美草地畜牧业可持续发展研究中心,甘肃兰州730070

出　　处：《草地学报》2022年第9期2407-2414,共8页Acta Agrestia Sinica

基　　金：农业农村部农牧交错带优质青粗饲料资源开发利用技术集成示范项目(16200157);现代农业产业技术体系(CARS-40-09B)资助。

摘　　要：本试验以在会宁(雨养区)种植的20个青贮玉米(Zea mays)品种为研究对象,分析比较20个玉米品种乳熟末期的生理特性,并对不同玉米品种水分利用率进行评价,为进一步选取优良抗旱的青贮玉米品种提供一定的理论依据。结果表明:干旱条件下,‘豫青贮23’‘陇单10号’和‘禾佳源铁研43’均具有高的可溶性糖(Soluble suger,SS)含量、超氧化物歧化酶(Superoxide dismutase,SOD)活性、鲜重水分利用率(Fresh weight water use efficiency,WUE_(f))、干重水分利用率(Dry weight water use efficiency,WUE_(d))以及低的丙二醛(Malondialdehyde,MDA)含量。‘豫青贮23’和‘陇单10号’的WUE_(f)较‘晋单73’分别提高了76.66%,76.35%,其MDA含量较‘延科288’分别降低了34.44%,41.69%。综上所述,在干旱区种植‘豫青贮23’‘陇单10号’和‘禾佳源铁研43’具有好的抗旱性。To provide a theoretical basis for selecting excellent drought-resistant silage maize varieties,20silage maize(Zea mays)varieties were planted in Huining.The physiological characteristics during milk stage telophase of silage maize were analyzed and the water use efficiency was compared.The results showed as follows:Under drought conditions,‘Yu silage 23’,‘Longdan No.10’and‘Hejiayuan tieyan 53’all had a higher content of soluble sugar(SS),superoxide dismutase activity(SOD),fresh weight water use efficiency(WUE_(f))and dry weight water use efficiency(WUE_(d))and lower malondialdehyde(MDA)content.The WUE_(f) of‘Yu silage 23’and‘Longdan No.10’were 76.66%,76.35%higher than that of‘Jindan 73’respectively,and the MDA content of‘Yu silage 23’and‘Longdan No.10’were 34.44%,41.69%lower than‘Yanke 288’respectively.In summary,‘Yu silage 23’,‘Longdan No.10’and‘Hejiayuan tieyan 53’have good drought resistance in the arid area.

关 键 词：青贮玉米 生理特性 水分利用率 抗旱性 雨养区 

分 类 号：S816.53[农业科学—饲料科学]