2 results about "Leaf weight" patented technology

The invention discloses a method and system for predicting plant photosynthetic ability by using plant leaf traits, and the method comprises the following steps: obtaining fresh weight, actual leaf area, specific leaf weight and relative water content of leaves, measuring leaf nitrogen content and leaf carbon content of the leaves, obtaining unit area leaf nitrogen content, unit area leaf carbon content and leaf carbon nitrogen ratio of the leaves, and determining the plant photosynthetic ability according to the unit area leaf nitrogen content, the unit area leaf carbon content and the leaf carbon nitrogen ratio of the leaves. And calculating the photosynthetic capability index of the plant to which the leaf belongs based on the obtained leaf character data and the prediction linear model of the leaf character photosynthetic capability parameter. By adopting the scheme, in-situ determination work does not need to be carried out in the field, the workload of technicians is greatly reduced, the working process and the operation difficulty of field operation are simplified, meanwhile, the measurement precision and the accuracy of a measurement result are considered, a large number of samples can be synchronously processed and determined, and the measurement efficiency is improved. The photosynthetic capacity parameters of various plants can be obtained in the same time period, and meanwhile, the dependence on the number of photosynthetic instruments in the photosynthetic in-situ determination process is avoided.

This invention discloses a screening method for high luteolin-containing chrysanthemum tea varieties. During the peak flowering period, multiple healthy, disease-free plants of each variety are randomly selected, and their stem diameter, leaf weight, and number of petals are measured and averaged. The value is calculated using the following formula: Y = -0.387 + 0.268X6 + 0.001X7 + 0.02X3; where X3 is stem diameter, X6 is leaf weight, and X7 is the number of petals. The larger the Y value, the higher the luteolin content of the variety. This method can quickly and initially screen high-content varieties, has low identification costs, and is simple to operate. It is a rapid screening method suitable for early breeding stages and large-scale field evaluation.