In order to screen the salt-tolerant wheat genotypes,wheat substitution lines derived from Chinese Spring and Synthetic 6x were treated with 0 mmol·L-1 NaCl(control) and 150 mmol·L-1 NaCl(salt stress) to investigate the effect of salt stress on the changes of specific leaf weight,relative photosynthetic characteristics and to locate the genes controlling the relative characters.The results indicated that salt stress resulted in the reduction of specific leaf weight,chlorophyll content,carotenoid content and photosynthetic rate.Chromosome location of relative characters showed that the genes increasing specific leaf weight might be located on chromosome 2D of Synthetic 6x,and the genes increasing the rate of chlorophyll content and carotenoid content might be located on chromosomes 1A,5A,7A,2B,3B,5B,6B,6D and chromosomes 1A,4A,7A,5B of Synthetic 6x,respectively,and the genes governing the rate of photosynthetic rate might be located on chromosomes 1A and 7D.In conclusion,1A chromosomes of Synthetic 6x may contain the genes regulating photosynthetic characteristics. |