Breeding method for high-yield and high-resistance green Chinese onion variety applicable to multi-season cultivation

Abstract

The invention belongs to a plant breeding method and in particular relates to a breeding method for a high-yield and high-resistance green Chinese onion variety applicable to multi-season cultivation. The breeding method comprises the following processing steps of: breeding crossing parents, carrying out a matching breeding test for cross combination, propagating the parents and propagating a generation F1. According to the breeding method provided by the invention, the problems that varieties are complex, characters of a strain degenerate, individual uniformity is poor, resistance is low and all-year production can not be realized, and the like in the prior art can be solved; the bred green Chinese onion hybrid is high in yielding capability, high in lodging resistance and flooding tolerance and applicable to multi-season cultivation, and disease resistance is obviously enhanced; and application amount of pesticide is reduced, production cost is reduced, land cropping index is increased, environmental protection is facilitated, pollution is reduced, vegetable basket safety is guaranteed, and income is increased.

Description

technical field [0001] The invention belongs to a plant breeding method, in particular to a method for breeding high-yield and high-resistance scallion varieties suitable for multi-season cultivation. Background technique [0002] The world's green onion planting area is 9 million mu, and my country accounts for 8.1 million mu. With the improvement of the efficiency of green onion planting, the planting area is also increasing year by year, and the production of green onion has embarked on the road of industrialization. However, with the development of industrialization, some problems in the production of scallions have gradually emerged. First, there are few good varieties, and most of the varieties used in production are conventional varieties, with low yield, poor quality, low disease resistance, stress resistance, low storage resistance, and short shelf life. The 2nd, also do not have a scallion variety on the market not only high yield, high resistance, but also suitab...

AI Technical Summary

Problems solved by technology

One is that there are few good varieties, and most of the varieties used in production are conventional varieties, with low yield, poor quality, low disease resistance, stress resistance, low storage resistance, and short shelf life

The second is that there is currently no scallion variety on the market that is both high-yield and high-resistant, and is suitable for each production and cultivation season or can be used for multi-season cultivation.

Third, the degree of industrialization is low, most areas are mostly scattered planting, the varieties are scattered, and the planting level is low

Fourth, most of the export-earning varieties are imported varieties, the seed price is high, the management requirements are strict, and the production cost is high

Most of the scallion breeding in my country adopts traditional breeding methods. Due to extensive introduction, self-propagation, and non-standard breeding techniques, it leads to mixed varieties, degraded species, poor individual uniformity, and poor resistance.

The genetic resources of scallions are not rich enough, especially the germplasm resources of wind resistance and waterlogging resistance. At present, most of the varieties bred and promoted are conventional breeding, which cannot meet the needs of production and market in terms of stress resistance and quality.

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