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本文系统地模拟了小麦植株茎顶端不同类型原基的发育过程 ,建立了叶原基分化、小穗原基分化和小花原基分化、退化、败育、受精结实及籽粒生长的子模型。模型引入每小穗分化的最大小花原基数、退化的最大小花原基数和籽粒潜在重量 3个遗传参数 ,分别反映了不同小麦品种小花分化、退化和籽粒生长等方面的遗传差异。利用南京地区两组田间试验资料对所建模型进行了检验 ,表明模型对小麦叶原基分化、小穗原基分化和小花原基的分化、退化、败育、受精结实以及籽粒重等均有较好的预测性和适用性 ,其平均差平方和的根值均小于 2。
In this paper, we systematically simulated the developmental process of different types of primordial stems in wheat plants, and established sub-models of leaf primordium differentiation, spikelet primordium differentiation and flower primordia differentiation, degeneration, abortion, fertilization and seed setting. The model introduced the maximum apocynum per spike differentiation, the maximum number of degraded apricot base and the potential weight of grain, which reflected the genetic differences in floret differentiation, degeneration and grain growth of different wheat cultivars respectively. The model was tested by two sets of field test data in Nanjing area. The results showed that the model had good effects on leaf primordium differentiation, spikelet primordium differentiation, differentiation, degeneration, abortion, fertilization and grain weight of wheat primordium The predictive and applicability of the average difference square root mean square less than 2.