Breeding method of stress resistant green onion breed
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A technology of stress resistance and scallions, which is applied in the field of selection and breeding of stress-resistant scallions, can solve the problems of poor regional adaptability and insufficient stress resistance, and achieve the effect of improving regional adaptability and strong stress resistance
Inactive Publication Date: 2011-05-04
同延龄
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[0003] The purpose of the present invention is to provide a method for breeding of stress-resistant scallions, which solves the problems of insufficient stress resistance and poor regional adaptability of scallions existing in the prior art
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[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0022] The method of the present invention is implemented according to the following steps,
[0023] Step a: Breeding of hybrid parents
[0024] a1. Breeding of male sterile lines and their maintainers: as shown in Figure 1, the male sterile lines of common cultivated scallions are used as receptors, and the cold resistance, disease resistance, small opening degree and scallion white inclusions of South Korea and Japan are used. Compact scallions were used as donors for multiple generations of backcrossing. Under the cold stress condition of natural low temperature, the backcross progeny were selected according to the breeding objectives, and continued selection for 5 generations, and the male sterile line A series and its maintainer line B were bred with cold resistance, small opening degree, light-white inclusion compact type series.
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Abstract
The invention discloses a breeding method of scallion breed with stress resistance, which is carried out according to the following steps: breeding of male sterile lines and the maintenance lines, breeding of inbred lines, reproduction of the male sterile line, the maintenance line and the inbred line, breeding of excellent first generation of hybrid, matching of hybridized combinations, repeatedtrials and reproduction of good combinations, wherein, a male sterile line of common growth scallion is chosen as receptor, a scallion with cold resistance, disease resistance, small stomatal aperture and tight scallion stalk inclusion is chosen as donor, backcross is carried out for a plurality of generations, selection is carried out in this way for 5 generations, thereby breeding the male sterile line and the maintenance line with cold resistance, small stomatal aperture and tight scallion stalk inclusion; wild scallion and Shule scallion with cold resistance, drought resistance and disease resistance are chosen as materials, self cross, separation and selection are carried out according to the line method for a plurality of generations, the best are selected and the worst are weeded out, the self cross selection is carried out for 5 generations, thereby breeding the inbred line with cold resistance, drought resistance and disease resistance. The dry scallion series hybrids bred inthe invention have the advantages of drought resistance, cold resistance, disease resistance, high yield, excellent quality, are suitable for dry-cultivation, and have extremely strong stress resistance.
Description
technical field [0001] The invention belongs to the technical field of plant breeding, and relates to a method for selecting a stress-resistant scallion variety. Background technique [0002] Scallion is a kind of vegetable unique to our country. With the improvement of people's living standards, the demand for production and life of scallion is getting higher and higher. Due to the lack of resources of existing scallion varieties in China, the progress of heterosis breeding is slow, and the varieties that have been bred have advantages. It is not very obvious, especially because of insufficient stress resistance and poor regional adaptability, it is not suitable for large-scale and multi-regional planting, which affects the promotion of large areas. Therefore, through hybridization, breeding, and grouping, the excellent genes of foreign resources and wild resources are introduced into domestic cultivated scallions, and their excellent traits are integrated into the same hyb...
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