Abstract: In order to understand developmental behavior of four protective enzymes (SOD,POD,CAT,GSHR) in Barley.Experimental data based on 196 genetic populations were used for the additive-dominant-maternal-paternal(ADMP) model with genotype×environment interaction and multivariable conditional analysis.The results showed that the genetic effects of 4 protective enzymes were not the same in different developmental stages.In the emergence to jointing stage,the dominant effect of SOD was the most strongest and the maternal effect of GSHR had the maximum value;from jointing to flowering,the SOD and POD had a relatively large additive effect,but GSHR had the maximum value of paternal effect;from the flowering to grain filling,the value of additive genetic was greater than the dominant effect on SOD and POD,the larger maternal effect of SOD and CAT had been detected,Meanwhile,the maximal value of paternal effect was detected on GSHR.In different growth stage,the drought-resistant identification indexes could be used:From emergence to jointing stage,the identification indexes was GSHR for the inbred line or parents,and SOD was suitable indexes for F₁ or F₂ of filial generation.From jointing to flowering stage,SOD and POD could be used as identification indexs for the inbred line or parents,meanwhile,POD could also be used to identify for F₁ or F₂ of filial generation.Flowing to grain filling stage,4 enzymes could be used as identification index for the inbred line or parents,but for F₁ or F₂ generation,only POD was suitable index.

Key words: Barley, Protective enzymes, Genetic effect

CLC Number: 

• S512.3