土壤圈(意译名)
土壤圈(意譯名)
토양권(의역명)
PEDOSPHERE AN INTERNATIONAL JOURNAL
2010年
4期
515-524
,共10页
cell membrane stability%genetic variabilities%inorganic ions%malondialdehyde%seawater salinity stress Citation: Long%X.H.%Huang%Z.R.%Huang%Y.L.%Kang%J.%Zhang%Z.H.and Liu%Z.P.2010.Response of two Jerusalem artichoke(Helianthus tuberosus)cultivars differing
To explore genetic variability for two Jerusalem artichoke(Helianthus tuberosus)cultivars,N1(the sixth-generation cultivated with 75% seawater irrigation for six years)and N7(a general variety),a experiment was conducted to study the changes in physiological attributes under different concentrations(0%,10% and 25% of seawater concentration in greenhouse and 0%,30% and 50% of seawater concentration in the field)of seawater salinity stress.In the greenhouse experiment,decreases of dry growth rate,but increases of dry matter percentage and membrane injury occurred in both the genotypes at 10% and 25% seawater treatments,although lesser cell membrane damage was observed in N1 than N7.N1 accumulated greater contents of Na+,Cl-,soluble sugar and proline in leaves compared with N7.In the field experiment,the yields of shoot,root and tuber,and the contents of total-sugar and inulin in tubers of N1 were higher than those of N7.Lesser degree of salt injury in N1 indicated that the relatively salt-tolerant cultivar had higher K+/Na+ratio,lower Na+/Ca2+ratio,and the salt-induced enhancement of osmotic adjustment.
