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将小麦发育的温度效应曲线化 ,以发育生理生态过程为基础 ,利用作物生理发育时间 (PhysiologicalDe velopmentTime ,简称PDT)为尺度 ,提出系统地预测小麦顶端发育阶段和物候生育期的模拟模型 .预测的顶端发育阶段包括单棱期、二棱期、小花原基分化期、雌雄蕊原基分化期、药隔期、四分体期、抽穗期 .物候发育阶段包括种子萌发、出苗期、分蘖期、越冬期、返青期、拔节期、孕穗期、抽穗期、开花期、灌浆期、成熟期 .模型中用来描述特定品种发育遗传差异的参数有温度敏感性、生理春化时间、光周期敏感性和基本早熟性 ,分别体现了不同品种小麦在热效应、春化作用、光周期反应以及最早开花时间这四方面的遗传特性 ,共同决定了不同品种到达各发育阶段的生理发育时间
Based on the development of physiological and ecological processes and using the PhysiologicalDevelopmentTime (PDT) as a scale, a simulation model for systematically predicting the developmental stages and phenological growth stages of wheat was proposed. The apical developmental stages include single-stage, two-stage, small-flower primordium differentiation, pistil and stamen primordia differentiation, drug interval, tetrad and heading.Physiological development stages include seed germination, seedling emergence, tillering stage, Overwintering, returning to green, jointing, booting, heading, flowering, filling and maturity.The parameters used in the model to describe the genetic differences of specific varieties were temperature sensitivity, physiological vernalization time, photoperiodic sensitivity And basic early maturity, respectively, reflect the different varieties of wheat in the thermal effects, vernalization, photoperiodic response and the earliest flowering of these four aspects of the genetic characteristics of different species to determine the developmental stages of physiological development time