Breeding method for cold-resistant okra

Abstract

The invention discloses a breeding method of cold-resistant okra, which is characterized in that it includes the following aspects: (1) seed storage, treating the okra seeds with a gibberellin solution, mixing them with a culture medium for storage, and storing them in 2 Heating the colchicine solution at ‑4°C for storage; (2) Mutagenesis breeding, first spraying the seeds with active selenium solution, then irradiating them with ultraviolet light at varying temperatures, and finally irradiating them with gamma rays; (3) Pregermination, immerse the mutagenized seeds in gibberellin solution for constant temperature germination; (4) Breeding, breed and cultivate at a temperature of 3-5°C, and screen cold-resistant seeds; (5) Cross-breeding, mutagenized seeds The okra seeds, the third-generation seeds, and the fourth-generation seeds were crossed three times to obtain the fifth-generation seeds for large-scale planting.

Description

technical field [0001] The invention belongs to the technical field of vegetable planting, and in particular relates to a breeding method of cold-resistant okra. Background technique [0002] Okra is an annual herb, also known as okra, coffee ambrette, and okra. It is divided into two types: green and red. It is widely planted in South Asia; its habit is warm climate, not cold-resistant, and it is deep, fertile and sunny land. Okra is rich in protein, fat, carbohydrates, vitamins, minerals and other nutrients. Long-term consumption can improve human immunity, protect gastric mucosa, and have certain curative effects on sore throat, urination and diabetes. Good food taste and health value. But the cold resistance of okra is relatively poor, and its adaptable growth temperature is high, although its sowing growth cycle is long, its planting time and scope are all subject to relatively large restrictions due to the influence of growth temperature; Related, the method of muta...

AI Technical Summary

Problems solved by technology

[0003] The present invention is aimed at the existing problems: planting range, okra has poor cold resistance, and its adaptable growth temperature is high. Although its sowing growth cycle is long, its planting time and range are greatly limited due to the influence of growth temperature; Breeding methods usually adopt mutagenesis and hybridization methods for breeding, but the use of chemical reagents for mutagenesis has strong teratogenic and toxic effects, and the resulting planting mutation rate is low, and causes a large number of seeds to die, and the survival rate is low; the irradiation mutagenesis method The mutation rate is high, but the direction of mutation is uncertain, and many bad genetic traits appear, requiring a lot of screening work; while the hybrid method has limited influence on the genetic traits of okra, and the acquired genetic traits are easily lost