To understand the effect of high temperature stress on starch accumulation and synthesis in hexaploid triticale kernels,four triticale cultivars were used to investigate the response of starch accumulation and the difference of the related enzymes involved in starch synthesis in triticale kernels under high temperature stress at early grain filling stage in the field with heat stress.The results indicated that heat stress at early grain filling stage significantly reduced triticale 1 000 kernel weight and v...