Comprehensive evaluation method for waterlogging tolerance of canna

Abstract

The invention discloses a comprehensive evaluation method for waterlogging tolerance of canna, which comprises the following steps: by taking a plurality of canna varieties as materials, carrying out waterlogging stress on the canna varieties in a waterlogging simulation manner, carrying out waterlogging stress treatment on experimental materials for 21d, and determining the waterlogging index of the experimental materials and seven physiological indexes of canna leaves of a control group and a waterlogging treatment group, so as to evaluate the waterlogging tolerance of the canna. And comprehensively evaluating the waterlogging tolerance of the canna indica by using the waterlogging tolerance coefficient of each single index as an evaluation basis and applying principal component analysis, membership function analysis and clustering analysis. According to the method, the traditional method for evaluating the waterlogging tolerance of the plants by utilizing a single index is abandoned, and the waterlogging tolerance of the canna plants is comprehensively and comprehensively evaluated by adopting principal component analysis in combination with multivariate mathematical statistical methods such as membership function and clustering analysis; and a foundation is laid for waterlogging tolerance variety breeding and large-scale variety waterlogging tolerance evaluation of canna plants.

Description

technical field [0001] The invention belongs to the technical field of plant stress resistance physiology, and in particular relates to a comprehensive evaluation method of canna waterlogging tolerance. Background technique [0002] Flood disaster is currently one of the main adversity factors leading to the decline of global crop yield and plant quality. Its essence lies in the damage caused to plants when the soil moisture content exceeds the maximum water holding capacity of the field. According to the difference of soil moisture content, it can be divided into wet damage and waterlogging damage. Wet damage is caused by soil voids being filled with water, and root growth is damaged due to lack of oxygen; waterlogging refers to the formation of accumulated water on the ground, causing some or all of the plant organs to be submerged in water. The essence of the two kinds of waterlogging damage to plants is that too much water hinders the gas exchange between plants and the...

AI Technical Summary

Problems solved by technology

However, there is still a lack of systematic evaluation of the waterlogging tolerance of canna resources, resulting in the blind selection of canna varieties in cultivation and application. Some terrestrial canna species are often used in water pollution restoration and artificial wetlands, while aquatic cannas are rarely used

In addition, even for terrestrial species, whose flowering period coincides with the season of concentrated rainfall in summer, waterlogging hazards are often encountered in garden applications, resulting in yellowing of leaves and poor flowering, seriously affecting its ornamental effect, reducing ecological value and economic benefits

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