A method suitable for speeding up the breeding of peanut varieties in Northeast China

Abstract

The invention discloses a peanut variety breeding accelerating method suitable for northeast China region. The peanut variety breeding accelerating method comprises the following steps that in the first year, a hybrid combination is prepared and planted in a field, and F1-generation seeds are obtained; expanding propagation is carried out in Hainan region, and F2-generation seeds are obtained; in the second year, film mulching and sowing are carried out, in the first-ten day period and the second-ten day period of August, single-grain pods of first lateral branches are harvested, and F3-generation seeds are obtained; after the F3-generation seeds are dried in the air, the F3-generation seeds are sown in a greenhouse, small sheds are erected, film mulching and cultivating are carried out, single-grain pods of first lateral branches are harvested in the end of November, and F4-generation seeds are obtained; in December, the F4-generation seeds are sown in Hainan region, full single-grain pods in single plants are harvested; in the third year, field sowing is carried out in Liaoning region, all single plant test materials are harvested in September, F5-generation seeds are harvested and aired, the aired F5-generation seeds are sown in Hainan region in November, strain selection is carried out, and field investigation is carried out on resistance; in the fourth year, single plants sown in Hainan region are harvested, indoor quality detection is carried out, excellent test materials are selected for single plant expanding propagation, and a new variety is obtained. By means of the method, the breeding period is shortened, and peanut breeding of the new variety is accelerated.

Description

technical field [0001] The invention relates to a method for breeding peanut varieties, in particular to a method suitable for accelerating peanut variety breeding in Northeast China. Background technique [0002] Peanut is an important oil crop and economic crop in my country, and occupies an important position in the national economy and social development. Peanuts are self-pollinating crops, most of which are planted on arid and barren mountainous lands that do not compete with food, and have become irreplaceable high-yielding and efficient crops, prompting farmers to increase their willingness to plant in recent years. However, peanuts in this area are mainly distributed in windy and sandy semi-arid areas, where drought, little rain, and cold weather in late spring occur from time to time. As peanuts have been planted for many years, the yield advantage of varieties has declined. In addition to stress resistance, high oleic acid, high oil, and high protein New varieties...

AI Technical Summary

Problems solved by technology

[0003] At this stage, due to the problems in peanut production, breeders have gradually adjusted the breeding goals of new varieties, and most of them adopt conventional breeding methods. It takes at least 8 years for breeding in the Northeast region to be popularized and applied in the region, and the breeding period is relatively long. The demand for new peanut varieties cannot be solved in a timely manner; in addition, the breeding methods in Northeast China mostly use the pedigree method and the mixed method to select new peanut varieties. , there is an urgent need for a method suitable for this region to speed up the breeding of varieties, shorten the process of peanut breeding, save workload, and speed up the promotion and application of new varieties