蓖麻地上部主茎器官形态建成的预测模型

Forecast Model of the Aboveground Organ Morphogenesis on Castor

以通蓖9号、通蓖10号、通蓖11号和通蓖13号为试验材料,在系统观测的基础上,构建了蓖麻主茎茎秆、叶片、果穗和蒴果等地上部器官的形态建成预测模型。用生理发育时间表达模型尺度,以品种遗传参数为基础,通过计算获得其他模型参数,以生理发育日衡量茎秆、叶片、果穗和蒴果的生长进程与生长次序,用最小含氮量、最大含氮量和临界含氮量订正氮肥效应。不同品种的检验结果表明,节间长、各节直径、叶长、叶宽、穗长、蒴果长和蒴果直径的模拟误差分别为0.10~0.72、0.03~0.16、0.19~0.73、0.30~0.60、0.89~1.85、0.11~0.21和0.05~0.12cm,RMSE分别为0.14~0.60、0.06~0.11、0.47、0.38、1.42、0.16和0.07cm。模型表现出较好的预测性和可靠性。

Based on systematic observation,the models of the aboveground organ morphogenesis was established on four castor varieties,Tongbi 9,Tongbi 10,Tongbi 11 and Tongbi 13.In the model,the time step was physiological development time,the growth process and the growth of the order of the stem,leaves and pods were measured by physiological development day,the model parameters were determined by genetic parameters,and the minimum nitrogen content,maximum nitrogen content,and critical nitrogen content were used to express the impact of nitrogen.The results showed that the absolute prediction errors ranges of internode length,internode diameter,leaf length,leaf width,ear length,capsule length and capsule diameter were 0.10-0.72,0.03-0.16,0.19-0.73,0.30-0.60,0.89-1.85,0.11-0.21 and 0.05-0.12cm respectively,with the root mean square errors(RMSE)of 0.14-0.60,0.06-0.11,0.47,0.38,1.42,0.16 and 0.07cm respectively.The model reflected a satisfactory prediction.