Effect of Temperature on Ear Abnormalities in Uniculm Barley

摘要: Field experiments with a uniculm mutant of Proctor spring barley showed that abnormal ear development often resulted from late sowing. The abnormalities were twin floret, super numerary parts, rachilla, opposite spikelets, one-ranked branched rachis, collar-like and bare nodes, aborted apex, tubular leaf. degree abnormality was unaffected by photoperiod. In both Kindred, node number relative to normal genotype decreased high -temperature treatment the proportion rachis nodes severity increased. transfer plants low temperature vice versa at different stages had an almost immediate effect, inducing development, but temperatures allowed resumption more development. closely resemble those induced 2,4-D it may be effect gene is in some way change metabolism auxin.