Breeding method for high-yield, high-oil and widely suitable peanut varieties

Abstract

The invention discloses a breeding method for a high-production high-oil eurytopic peanut breed. Peanut material with the shelling percentage not lower than 73 percent is selected as a receptor, namely a female parent, and is prepared to be in hybrid combination with a material, taken as a male parent, with the oil content not lower than 54 percent, and sexual hybridization is performed by adopting a carina covered cross pollination method; single-grain sowing is carried out in generation F1 according to combination, and when in mature, mixed reaping is carried out after the removal of false hybrid and diseased or infected plants; single-grain sowing is carried out in generations F2 and F3, qualitative characters and quantitative characters with high hereditary capacity are selected, after mature, two to three double kernel peanuts are picked from each plant, singleplant picking mixed harvest is performed according to combination, and interbreeding is performed on subsequent generations; single-grain sowing is performed on generations F4 and F5, selection to characters with low hereditary capacity, of early generations, is performed, after mature, a singleplant is selected for indoor detection, and planting to row is performed on subsequent generations according to singleplant; single-grain sowing is carried out on generations F1 to F6, and selection is performed by adopting four-motion and one-fix force; and bidirectional and synchronous selection of yield and oil content is achieved. The breeding method provided by the invention solves the problem of difficult combination of high production, high oil content and eurytopicity, and has a great application value.

Description

technical field [0001] The invention belongs to the technical field of peanut breeding, in particular to a method for breeding high-yielding, high-oil and widely suitable peanut varieties. Background technique [0002] Peanuts are the main oil crops and economic crops in my country, and oil extraction has always been the most important use of peanuts in China. More than 55% of the peanuts produced in my country are used for oil extraction. [0003] At present, the oil content of the main varieties popularized in my country is only 51.4% on average, especially the large-grained varieties have even lower oil content. The oil content of some large peanut varieties planted in the main northern production areas is less than 50%. The oil content of oil-pressed peanuts is low. This is the main reason for the high price of peanut oil and poor market competitiveness in our country. According to calculations, every 1 percentage point increase in the oil content of raw materials for pe...

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Problems solved by technology

[0013] The purpose of the embodiments of the present invention is to provide a high-yielding, high-oil, and widely-suitable peanut variety breeding method, aiming at solving the problem of single selection technology for offspring of peanut breeding, lack of synergistic selection of multi-target traits, and high yield, high oil content and wide adaptability The problem of difficult aggregation of equal traits

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