Building and predicting methods of net photosynthetic rate predicting model based on woody plant leaf phenotypic characteristics

Abstract

The invention provides building and predicting methods of a net photosynthetic rate predicting model based on woody plant leaf phenotypic characteristics and belongs to the field of bioinformatics. The building and predicting methods have the advantages that an average linkage clustering method and a PAM clustering method are combined to divide woody plants at different geographical positions intodifferent sub-varieties, and the differences of the different sub-varieties are eliminated to reasonably predict net photosynthetic rate; meanwhile, a gradient increasing algorithm is used in each sub-variety to build the net photosynthetic rate predicting model on the basis of the phenotype data of leaf samples, the gradient increasing algorithm iterative stopping criteria is put forward for thefirst time during modeling, algorithm iteration residual critical values are provided for the woody plant leaf phenotype data of different sub-varieties, the populus simonii net photosynthetic rate predicting model is built by using the improved gradient increasing algorithm based on the iterative stopping criteria, and an ideal predicting effect on the net photosynthetic rate of different populus simonii varieties can be achieved under a condition that the leaf phenotype data is known.

Description

technical field [0001] The invention belongs to the field of biological information, and in particular relates to a construction method and a prediction method of a net photosynthetic rate prediction model based on the phenotypic characteristics of woody plant leaves. Background technique [0002] Net photosynthetic rate is an important index to measure the intensity of plant photosynthesis and plays an important role in the process of plant growth and development (ShipleyB et al.2005). In the 19th century, Sachs first proposed the method of measuring photosynthetic rate by the half-leaf method, which was the earliest method applied to the measurement of photosynthetic rate. It does not require complicated instruments and equipment, and is simple and easy to implement. However, using the half-leaf method will destroy the tested material and cannot be measured continuously, and the measurement time is long, and the environmental conditions are not easy to control, resulting i...

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Problems solved by technology

It can be seen that the existing methods for measuring the net photosynthetic rate generally have higher requirements on the environment.

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