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- W2361488246 abstract "Modeling spike growth dynamics in wheat is of significant importance for realizing virtual and digital wheat plant growth.Based on time-course observations on spike morphological properties(spike length,spike width and spike thickness) on main stems and tillers under different nitrogen rates and winter wheat cultivars in two growing seasons,the change patterns of spike morphology with growth progress and environmental factors were characterized and a dynamic model was developed to simulate time-course growth characters of spike on wheat plant.The results showed that the final spike length at different tiller positions accorded with quadratic equation,which showed marked differences under different nitrogen rates.The growth dynamics of spike length could be described with a logistic model(sigmoid curve),and the growth dynamics of spike shape described with quadratic equation and linear equation.The effect of nitrogen status on spike growth was quantified by the value of leaf SPAD.The model was validated with the field experiment data of different winter wheat cultivars.The average RMSEs of time-course spike length,width and thickness were 0.28,0.05 and 0.04cm,respectively.The results indicated that the present model had a good performance in predicting spike morphological growth on wheat plant, and thus lay a foundation for further constructing virtual wheat plant." @default.
- W2361488246 created "2016-06-24" @default.
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- W2361488246 date "2006-01-01" @default.
- W2361488246 modified "2023-09-28" @default.
- W2361488246 title "Modeling Spike Growth Dynamics in Winter Wheat" @default.
- W2361488246 hasPublicationYear "2006" @default.
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