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modeling Study of Fruit morphological formation in Melon

Agricultural Sciences in China 2011年第5期10卷 714-720页

作者： CHANG Li-ying NIU Qing-liang MIAO Yu-bin HE San-peng CUI Chong HUANG Dan-feng School of Agriculture and Biology Shanghai Jiaotong University Shanghai 200240 P.R.China

modeling of fruit morphological formation in melon is important for realizing virtual and digital plant *** objective of this study was to characterize the changes in patterns of fruit growth characters during plant *** cultivar experiments,a high-resolution wireless vision sensor network has been developed to realize non-contact automatic uninterrupted measurement of the fruit shape micro-change （fruit size,color,and net）.Results showed that the fruit swelling process （vertical and horizontal diameters） exhibited a slow-rapid-slow pattern,which could be well described with a logistic curve against growing degree days （GDD）;fruit color changes based on the RGB values could be represented by quadratic relationship to cumulative GDD;the fruit net changes over growth progress could be partitioned into three phases according to the time *** first phase was from 1 to 30 days after pollination （DAP）,in which the vertical stripe appeared at fruit middle part and the horizontal stripe at fruit petiole and hilum part as well;the second phase was from 30 to 40 DAP,the horizontal stripe occurred at fruit middle part and the net was formed;the third phase was the process started from 40 DAP,the netted breadth and thickness were gradually *** model was validated with the independent data from the experiment,and the mean RMSE （root mean square error） of fruit were 0.36 and 0.28 cm for vertical and horizontal diameters,11.9 for fruit color,and 0.45 cm for stripe length and diameter at varied GDD,*** work is beneficial to a reliable foundation for study the relationship between morphological formation and physiological change of the melon fruit internally and then realize the intelligent precision management to improve the yield and quality of greenhouse melon production.

关键词： melon (Cucumis melo L.) morphological formation model fruit diameter fruit color fruit net growing degreedays (GDD)

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