摘要
对小麦品种的春化作用、光周期反应及其与发育进程的关系进行了量化分析和动态模拟。发育速率首先取决于春化进程和光周期效应的互作.春化完成后主要受光周期的调节。温度的影响以每日热效应来计算,与发育速率互作形成每日生理效应。生理效应的积累获得发育生理时间或发育天数,满足一定的生理时间即可到达某个发育阶段。利用不同类型小麦品种与不同播期的多个试验资料,对模型进行了检验,发现模型具有较好的预测性和适用性。模型对不同发育阶段的预测标准差分别为二棱期6.1 d、顶小穗形成期4.5 d、抽穗期3.6 d。
Quantitative analyses and dynamic simulation were undertaken on vernalization,photoperiod response,and their relationships to development progress in wheat.The development rate first depended on the interac- tion of vernalization progress and photoperiod effectiveness,and then after completion of vernalization depended on photoperiod response.The influence of temperature was quantified as daily thermal effectiveness,which interacted with development rate and generated daily physiological effectiveness.Physiological time was calculated as accumulat- ed physiological effectivenss,and triggere a particular development stage.Validatation of the model was conducted us- ing mutiple experiment data sets involving various eultivars and planting dates.The standard deviation of prediction was 6.I days for double ridge,4.5 days for terminal spikelet formation,and 3. 6 days for heading.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1996年第1期9-16,共8页
Journal of Nanjing Agricultural University
基金
国家教委留学归国人员基金
江苏省科委基金
关键词
小麦
春化作用
光周期反应
发育进程
wheat
vernalization
photoperiod response
thermal effectiveness
development rate
physiological time
development progress
simulation model
