A method for identification of phosphorus uptake efficiency of peanut germplasm under hydroponic conditions

Abstract

A method for identifying phosphorus absorption efficiency of peanut germplasm under hydroponic conditions, comprising the following steps: 1: select a few peanut seeds, soak them in alcohol for disinfection, and soak the seeds in a dark environment; After getting wet, wrap it with plastic wrap; 3: Wash the soaked seeds with deionized water, arrange them evenly on the bottom of the germination box, and seal them with plastic wrap to germinate; 4: Plant the seedlings in the black hydroponic box; 5: Plant the seeds The black hydroponic box with peanut seedlings is divided into two groups, one group is treated with suitable phosphorus, and the other group is treated with low phosphorus; six: move the plants into deionized water and starve for more than 20 hours, and then immerse all the roots in a concentration of P containing 0.2 In the absorption solution of mmol / L, measure H in the absorption solution before and after absorption 2 PO 4 The change in concentration, and then the average absorption rate to the absorption stage. In the method, the phosphorus source provided by the hydroponic method is the available phosphorus that can be directly absorbed and utilized by plants, and the integrity of the root system of the plants is good, and the measurement results are accurate and reliable.

Description

technical field [0001] The invention relates to the field of agricultural science and technology, in particular to a method for identifying phosphorus absorption efficiency of peanut germplasm under hydroponic conditions. Background technique [0002] Phosphorus is an inorganic salt. The inorganic salt enters the plant together with water. The absorption of phosphorus by the plant depends on the root tip. When the concentration is high, the plant body will absorb inorganic salts from the outside world. [0003] Different crops absorb phosphorus at different speeds. Generally, phosphorus-loving crops absorb phosphorus faster than general crops. For example, crops such as rapeseed, soybeans, and peanuts are more capable of absorbing phosphorus sources. The growth of crops is accelerated, and the demand and absorption of phosphorus will also increase. For example, the seedling stage and the young fruit stage are the periods of rapid growth of seedlings and rapid fruit developm...

AI Technical Summary

Problems solved by technology

Peanuts are generally cultivated in soil or in the field, and insoluble phosphorus and fixed phosphorus in the soil have a greater impact on plant absorption, and peanuts planted in the soil are very easy to damage the root system when testing the peanut root system, resulting in The measurement result is not accurate

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