小麥과 大麥의 出穗期 및 成熟期差異에 關한 硏究

Studies on the differences of factors affecting heading and maturing dates in wheat and barley

This experiment was carried out to investigate the differences in performance related to earliness between barley and wheat. Early, intermediate, and late varieties of wheat and barley were tested. In contrast with barley, the average heading dates of early and intermediate varieties of wheat were 6 to 7 days later at Suweon, Daejon and Milyang. However, the average maturing dates of these wheat cultivars were 5 days later than those of barley. Wheat needed higher growing temperature, larger in earliness in narrow sense and short day response than barley. The young spike initiation of wheat varieties proceeded smoothly and non-linearly after sowing, but after young floral primordia initiation(stage Ⅳ-Ⅴ) in early spring, the young spike development proceeded rapidly. In general, the young spike development in wheat, in contrast with barley, was two or three stages later and was sensitive to low temperature.