小麦叶鞘和节间生长过程的模拟研究

以5个不同株型小麦品种为供试材料,通过对冬小麦品种叶鞘和节间生长过程的连续观测和定量分析,构建了小麦叶鞘和节间生长过程的动态模拟模型。模型采用Logistic方程描述了叶鞘和节间的伸长动态;利用叶鞘与对应节间长度的比例关系模拟了不同节间的长度;利用节间粗与对应节间长的比例关系定量描述了不同节间的粗度。模型检验结果显示,不同叶鞘长、节间长和节间粗预测值的平均RMSE值分别为1.34、1.71和0.06 cm,表明本模型具有较好的预测性和可靠性。

Modeling Leaf Sheath and Internode Growth Dynamics in Wheat

Based on extensive observations and quantitative analysis on leaf sheath and internode growth processes with different variety types, a dynamic model was developed to simulate time-course growth characters of leaf sheath and internode in wheat. The growth dynamics of leaf sheath and internode were described by using the Logistic model, the internode length was modeled with the relationship between leaf sheath length and corresponding internode length, and the internode thickness was quantified by using the relationship between internode thickness and corresponding internode length. The results of model validation show that the mean RMSEs of leaf sheath length, internode length and thickness were 1. 34 cm, 1. 71 cm and 0. 06 cm, respectively, which indicated a good performance of the model in prediction of leaf sheath and internode growth dynamics in wheat.