Peanut hybridization method

Abstract

The invention discloses a peanut hybridization method. The method comprises the steps of emasculation, pollination and ethephon spraying. In the seedling stage, peanut plants are sprayed with a plant vitality promoter, the plant vitality promoter is a compound sodium nitrophenolate liquid, and the mass concentration of the nitrophenolate liquid is 3.43*10<-3>g / L; and in the pod setting stage, peanut plants are sprayed with an ethephon and poiser mixed solution in 15L / 666.7m<2>, the ethephon mass concentration is 1.0g / L, the single application amount of ethephon is 1.5*10<1> / 666.7m<2>, and the poiser is a mixture of brassin, triacontanol emulsifiable powder, diethyl aminoethyl hexanoate, alpha-pimacol and potassium dihydrogen phosphate. The method has the substantial advantages of small hybridization labor amount, large hybridized peanut fruits, and large hybridized peanut fruit grain weight.

Description

Technical field: [0001] The invention relates to a plant hybridization technique, in particular to a peanut hybridization method. Background technique: [0002] Conventional hybridization of peanuts mainly includes three steps: emasculation, pollination, and marking (carrying needles). Among them, marking is to distinguish hybrids from non-hybrids so that hybrid pods can be collected correctly. It has developed from the original icon-painted joints, to the hybrid joints in the late 1960s, to the hybrid fruit needle cover plastic rope (commonly known as the fruit needle set). These methods are not only loaded down with trivial details but also long working hours, accuracy rate is low, and cost is also higher. With the development of agricultural science and technology, the birth and application of plant growth regulators can fundamentally solve this problem. At present, ethephon inhibitors are mainly used to inhibit the later flowering of peanuts, and the step of marking in...

AI Technical Summary

Problems solved by technology

There are two problems in this treatment: one problem is that there are still a certain amount of flowers 1 or 2 days after ethephon treatment, and they need to be manually removed one by one. If large-scale hybrid breeding is carried out, this requires more manpower input and increases the financial burden; Another problem is that because the flowers after ethephon treatment are small, manual removal is easy to miss, which may form false mixed fruits and reduce the purity of hybrid fruits.

If the peanuts were sprayed with 0.8 g / L ethephon solution, weak flowers could be seen only on the first day, which could reduce the labor of manual flower picking to a certain extent, but the pods after harvest were smaller and irregular than those of the control

It shows that with the increase of ethephon treatment concentration, the number of flowering peanuts decreases, but the negative effect on pod filling increases. Can the concentration of ethephon treatment be further increased to completely inhibit peanut flowering, and at the same time reduce its negative effect, forming large and plump pods. High-quality seeds with a high germination rate are worth exploring