前一报曾报道,将小麦品种(或品系)的全生育期分为播种—拔节(第1期)、拔节—抽穗(第2期)、抽穗—开花(第3期)及开花—成熟(第4期)4个生育期后,尽管把它们所具有的每个期间均短的遗传特性重组起来,也只比关东以西普及的小麦农林61号早熟1周.这表明要选育像大麦一样早熟10天—2周的小麦品种,仅仅运用日本小麦品种所具有的遗传特性是不能达到目的的.本研究为了明确小麦的改良要点,根据小麦和大麦早热性的差异(按前报的方法)进行了研究比较 The previous paper reported that the whole growth period of wheat cultivars (or lines) was divided into sowing-jointing stage 1, jointing-heading stage 2, heading-flowering stage 3 and flowering-maturity stage No. 4) After 4 reproductive periods, only 1 week prior to the short period of genetic traits they had, they were only 1 week earlier than wheat Nonglin 61, which is popularized west of the Kanto region, indicating that they should be bred like barley Wheat cultivars aged 10 days to 2 weeks can not achieve their goal only by using the genetic characteristics of Japanese wheat cultivars.In order to clarify the main points of wheat improvement, ) Conducted a study and comparison