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| Monitoring of Root Growth of Scindapsus aureus Based on CI-600 |
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| DOI：10.16768/j.issn.1004-874X.2022.01.018 |
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| Abstract: |
| 【Objective】In order to provide appropriate irrigation reference basis for the planting of Scindapsus
aureus and reduce the waste of water resources in agricultural production, the relationship between the growth of S.
aureus and water stress was explored.【Methods】S. aureus was selected as the experimental material and treated with
different gradients of water stress in four groups. The CI-600 plant root growth monitoring equipment was used to collect
and analyse the relationship between root number, root length, root area, root volume and the water stress, respectively,
and the Excel software was used to process data then draw the relation curve between relevant root parameters and soil water stress. The relationship between plant root growth and water stress was finally obtained by using the least square
method and quadratic term fitting method for model fitting.【Result】Most of the models fitted by quadratic terms have R2
greater than 0.9, which indicates a high degree of fitting. The root number, root area and root volume are growing the fastest
under the humidity of 35%. Humidity in the range of 25%-35% is conducive to the increase of root length. According to
the fitting curves, the two indexes of root number and root length are consistent under 25% and 35% humidity conditions.
Moreover, water stress affects root area and root volume by affecting root length and root number. Roots also depend on
the expansion of diameter to obtain effective absorption area while elongating. The change of root volume is related to the
changes of root number and root diameter.【Conclusion】In conclusion, the optimum growth humidity for S. aureus is 35%.
What’s more, drought stress（15%）and flooding stress（45%）have adverse effects on root growth. Finally, under different
water stress, the physiological indexes of root system have different trends and behaviors, and the indexes are interrelated
and complementary to each other so as to form a harmonious growth system. Therefore, when cultivating plants, humidity
should be controlled in the appropriate range to obtain the high quality biological characteristic values of the plants, then to
ensure its economic benefits. |
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