Abstract:

In order to evaluate the low-temperature tolerance of wheat varieties and to screen wheat germplasm resource of low-temperature tolerance, fifty nine synthetic hexaploid wheats were used to investigate the morphologic traits of seedling (fifteen days) at room temperature (18℃) and low temperature (4℃), relative trait values (the ratios of trait values at low temperature to those at room temperature) and subordinate function values. The results showed that the low-temperature tolerance in synthetics of Triticum dicoccum / Aegilops tauschii wheats was higher than that of Triticum durum / Aegilops tauschii. The germplasm with low-temperature tolerance could be used for wheat breeding.