SYSTEM OF EVALUATION AND INHERITANCE OF E XPRESSIVITY OF RESPONSE TO TEMPERATURE AND LIGHT IN BARLEY (HORDEUM-VULGARE L) - RESPONSE TO HIGHCULTIVATION TEMPERATURE

Expression of response to high cultivation temperature (HCT) was studi ed in spring barley (Hordeum vulgare L.) grown in a climate chamber. I t was shown that response to HCT developed during formation of the gen erative sphere. Response to HCT was neutral in 34 cultivars and slight ly negative in 49 cultivars. Analysis of three crosses, involving thre e barley cultivars, showed that absence of response to HCT was control led by the dominant allele of the Tmp l gene and presence of response, by the recessive alleles tmp l'and tmp l ''.