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为了利用植株外部形态来判断谷子内部幼穗分化的各个时期,我们在呼和浩特地区的研究结果表明,用叶龄指数判断比较理想。叶龄指数是指调查时主茎的叶片数除以该品种主茎总叶数所得之值,再乘以100。谷子的幼穗分化过程,经观察初步划分为生长锥伸长期、穗枝梗分化始期、一级枝梗分化期、二级枝梗分化期、三级枝梗分化期、小穗分化期,小花分化期等。一、早熟品种蒙早二号幼穗分化时期与叶龄指数的相关性:一般早熟种的总叶片数为15～
In order to make use of the external shape of plants to judge the different stages of spike differentiation in millet, the results of our research in Hohhot show that the leaf age index is more ideal. The leaf age index is the number of main stem leaves divided by the total number of main stem leaves of the variety, multiplied by 100. Spikelet differentiation process of millet was initially divided into three groups: elongation stage of elongation, initial stage of branch and stem division, primary branch and stem differentiation period, secondary branch and stem branch differentiation stage, spikelet differentiation stage, small flower Differentiation and so on. First, precocious variety Early morning panicle differentiation stage and leaf age index correlation: the general early mature species of the total number of leaves is 15 ~