Peanut castration method

Abstract

The invention provides a peanut castration method, which comprises the following steps of (1) preparing a castration solution which contains 0.01 to 0.2 weight percent of sodium borate, 1 to 8 weightpercent of saccharose and the balance of water; (2) heating the castration solution until pollens are killed without damaging the chapiter temperature; then, pouring the solution into a heat insulation container filled with cotton balls for heat insulation; (3) eliminating petals: eliminating two peanut petals; (4) performing castration: slightly putting the small cotton balls soaked with the castration solution into a flower subjected to petal elimination by tweezers; performing placement for 5 to 10 minutes; taking out the cotton balls. The peanut castration method provided by the inventionhas the advantages that the work and the time are saved; simplicity is realized; a method of clamping away anthers by the tweezers is used; one skilled worker can complete castration on about 40 to 50flowers per day. By using the method provided by the invention, one skilled worker can averagely complete castration on about 80 to 100 flowers per day; the efficiency is improved by 1.6 to 2.5 times; the castration is thorough; the chapiter damage is avoided; the hybridization success rate is high. The hybridization success rate of the method is 20 to 25 percent; the true hybrid seed rate is 75to 80 percent. Compared with a conventional castration method, the method has the advantages that the castration success rate is improved by 67 to 150 percent; the true hybrid seed rate is improved by12 to 23 percent.

Description

technical field [0001] The invention belongs to the technical field of peanut genetics and breeding, and in particular relates to a peanut emasculation method. Background technique [0002] Peanut is one of the most important oil crops in my country, with an annual planting area of ​​about 70 million mu. Because of its high yield, high quality and high economic benefits, peanut has become the oil crop and economic crop with the highest per unit yield, total output and export earnings in China. It is a high-quality crop in my country. Edible vegetable oil and an important source of high-quality edible vegetable protein occupy an important position in my country's food safety and oil safety. The cultivation of new peanut varieties is the prerequisite for the development of my country's peanut industry. At this stage, the breeding of new peanut varieties in my country mainly uses the method of sexual hybridization. Under the premise that male sterility is not found in peanuts, e...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems that the current peanut emasculation method is labor-intensive, easy to damage the stigma, and the success rate of hybridization is low, and the rate of true hybrids is low, the present invention provides a peanut emasculation method, which is time-saving, labor-saving and simple. , good emasculation effect