【摘 要】
：
1982—1985年在北京地区的小麦多期播种试验中,强春性小麦在三叶期开始了穗分化的伸长期.随着冬性的增强,伸长期的主茎叶数逐渐增多,天数也逐渐增加.强春性品种的穗分化对温
【机 构】
：
中国农业科学院作物育种栽培研究所,中国农业科学院作物育种栽培研究所,中国农业科学院作物育种栽培研究所,四川省万县地区农科所 北京,北京,北京,万县
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1982—1985年在北京地区的小麦多期播种试验中,强春性小麦在三叶期开始了穗分化的伸长期.随着冬性的增强,伸长期的主茎叶数逐渐增多,天数也逐渐增加.强春性品种的穗分化对温度和日长都无严格要求,高温可促进分化.冬性品种的穗分化可在温度较低、日长较短逐渐转入温度较高、日长较长的条件下顺利进行.过渡类型小麦穗分化的温光条件居中.伸长期或二棱末期是过渡类型和冬性小麦完成春化反应的标志.
In spring wheat multiple seeding trials in Beijing during 1982-1985, spring wheat started to spike differentiation in the three-leaf stage, and with increasing winter, the number of main stems in the elongation stage increased gradually, Gradually increased.Each spring spike differentiation differentiation of the temperature and the day without strict requirements, high temperature can promote differentiation.The winter spike differentiation can be at a lower temperature, shorter day gradually into the higher temperature, day long The longer the conditions for the smooth transition of wheat spike differentiation temperature and light conditions in the middle.Early or late two-phase transition type and winter wheat signs of vernalization.
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