摘要
在不同浓度NaCl胁迫下,通过光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、胞间CO2浓度(Ci)、叶绿素(Chl)、丙二醛(MDA)、游离脯氨酸(Pro)、超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的测定,运用主成分分析法和模糊隶属函数法对30份国外引进的大麦Hordeumvulgare品种(系)耐盐性进行综合分析。结果表明:随着NaCl浓度增大,引进大麦品种(系)除SOD、CAT和Pro外,其他指标与对照相比均有所下降。根据综合评价值可知,其耐盐性由强到弱为:22-25>22-30>DH-116>Tabigha>Modaba>22-55>DH-55>22-28>Tarpgolbor>KoRv>KHEMUS>Steptoe>Harrington>Clipper>Jrbid>Cpyrus>DH-66>Prior>Morex>22-43>TObarley>Barbican>22-42>DH-40>Schooner>DH-127>Kerab>Sloop>Yahudiya>DH-126。
MDA content, SOD activity, CAT activity, Pro content and chlorophyll content, photosynthesis rate, stomatal conductance and transpiration rate were measured under different salt stress at seeding stage. Salt tolerance in 30 introduced materials of Hordeum vulgare was comprehensively analyzed by principal component analysis and subordinative function. The results showed that MDA content, chlorophyll content, photosynthesis rate, stomatal conductance and transpiration rate de- creased with the increasing of NaC1 concentration except SOD activity, CAT activity and Pro content. The sequence of salt tolerance for 30 materials was 22-25〉22-30〉DH-116〉Tabigha〉Modaba〉22-55〉DH-55〉22-28〉Tarpgolbor〉KoRv〉KHEMUS〉Steptoe〉Harrington〉Clipper〉Jrbid〉Cpyrus〉DH-66〉Prior〉Morex〉22-43〉TObarley〉Barbican〉22-42〉DH-40〉Schooner〉DH-127〉Kerab〉Sloop〉Yahudiya〉DH-126.
出处
《草业科学》
CAS
CSCD
北大核心
2010年第4期127-133,共7页
Pratacultural Science
基金
教育部科技创新工程重大项目培育资金项目资助(707054)
高等学校学科创新引智计划资助(111-2-16)
国家"十一五""863"计划-现代节水农业技术系统创新及集成应用(2006AA100223)
陕北地区燕麦种植与利用示范(XTG-2009-29)
关键词
大麦品种(系)
苗期
耐盐性
综合评价
Hordeum vulgate
salt tolerance
seedling stage
comprehensive evaluation
