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A method for evaluating the density of hairs on the back of chestnut leaves using a colorimeter

A technology of using color on the back of leaves, applied in the field of plant growth characteristics evaluation, can solve the problems of poor stability and repeatability, strong subjectivity, non-digitalization, etc., achieve accurate measurement results, high stability and repeatability, and overcome subjectivity. strong effect

Active Publication Date: 2022-07-12
CHANGLI INST OF POMOLOGY HEBEI ACADEMY OF AGRI & FORESTRY SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for evaluating the density of hairs on the back of chestnut leaves using a colorimeter, so as to overcome the problems of non-data, strong subjectivity, poor stability and repeatability of the current visual method for measuring the density of hairs on the back of chestnut leaves , to provide a method for accurately evaluating the density of hairs on the back of the leaf for the prior art

Method used

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  • A method for evaluating the density of hairs on the back of chestnut leaves using a colorimeter
  • A method for evaluating the density of hairs on the back of chestnut leaves using a colorimeter
  • A method for evaluating the density of hairs on the back of chestnut leaves using a colorimeter

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Embodiment 1

[0029] The leaves of 20 chestnut varieties from 10 provinces in the chestnut germplasm resource garden of Changli Fruit Tree Research Institute, Hebei Academy of Agriculture and Forestry Sciences were taken as experimental materials, and the density of the backside of the leaves was measured by visual inspection and the method of the present invention. Do as follows:

[0030] 1. Visual inspection method:

[0031] (1) Sample preparation

[0032] Select 3 mature leaves in the middle of the vegetative branch without pests and diseases in the same direction on the periphery of each tree of each variety, and repeat this 3 times.

[0033] (2) Evaluation of hair density on the back of leaves

[0034] Subjective evaluation of the hair density on the underside of leaves of each variety by 5 people (Reference, Zhang Junke, Li Xingliang, Li Minji, et al. Analysis of factors affecting consumers' subjective evaluation of 'Fuji' apple quality and establishment of evaluation model [J]. Fru...

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Abstract

The invention relates to the technical field of plant growth characteristic evaluation, and discloses a method for evaluating the hair density on the back of chestnut leaves by using a colorimeter. The method includes the following steps: (1) selecting a location for measuring the hair density on the back of the chestnut leaf; (2) detecting the color of the back of the leaf by a colorimeter to obtain a parameter L * (3) Determination of the density of hairs on the underside of leaves. The method of the invention converts the hair density into the color parameter L according to the characteristic that the higher the density of white hairs on the back of the chestnut leaves, the whiter the color is. * Value (whiteness value), and combined with the innovation of the measurement method, the digital determination of the hair density on the back of chestnut leaves is realized. The method of the invention overcomes the defects of high subjectivity and large errors of the conventional visual inspection method, and provides a practical and reliable method for accurate determination and accurate comparison of the hair density of chestnut leaves.

Description

technical field [0001] The invention relates to the technical field of plant growth characteristic evaluation, in particular to a method for evaluating the hair density on the back of chestnut leaves by using a color difference meter. Background technique [0002] The backside hairs of leaves are a variety of epidermal appendages that plants adapt to various living environments. They play an indispensable role in regulating plant energy balance, resisting ultraviolet radiation and pathogen invasion, alleviating high-efficiency gas exchange, and reducing excessive water transpiration. Studies have confirmed that the presence or absence and density of hairs are closely related to the photosynthetic characteristics, disease and insect resistance, drought resistance and cold resistance of plants. [0003] Chestnut (Castanea mollissima Bl.) has many white stellate hairs on the back of leaves. The density of hairs on the back of leaves is an important index to evaluate the photosy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25
CPCG01N21/25
Inventor 郭燕张馨方张树航李颖王广鹏
Owner CHANGLI INST OF POMOLOGY HEBEI ACADEMY OF AGRI & FORESTRY SCI
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