Breeding method of cold-resistant and saline-alkali-resistant grape stock

Abstract

The invention provides a breeding method of a cold-resistant and saline-alkali-resistant grape stock. The method comprises the following steps of adopting 'river bank 580' as a female parent and 'mountain grape' as a male parent for preparing a hybrid combination, obtaining hybrid seeds in autumn of the year, carrying out sand storage stratification treatment, and sowing the hybrid seeds in the second year to obtain hybrid seedlings; after 2-3-year planting observation, selecting the hybrid seedlings strong in growth trend and free of diseases for cold resistance identification, and selectinghybrid seedlings with good cold resistance as alternatives; carrying out field cold resistance identification, saline-alkali resistance identification and grafting compatibility experiments on the hybrid seedlings selected in step 2 to obtain the grape stock. The grape stock bred by means of the method has the advantages of high cold resistance and saline-alkali resistance, good grafting affinityperformance, strong growth potential, straight and smooth branches, few bad branches and high maturity, and the strip yield can reach 10,250 meters per mu.

Description

technical field [0001] The invention relates to a method for selecting cold-resistant and salt-alkali-resistant grape rootstocks, which belongs to the field of grape variety breeding. Background technique [0002] Grape is one of the main tree species for fruit tree cultivation in my country, but some grape varieties have poor cold resistance. Eurasian grapes must be buried in the soil to protect against cold in areas where the annual average of the extreme minimum temperature for many years is lower than -15°C, while European and American hybrids are below -15°C. Areas with -17°C should also be buried in soil to prevent cold. The cold resistance of grapes varies greatly due to different types, varieties, organs, tissues and growth periods. Among them, the cold resistance of the root system in the dormant period is the worst. Generally, when the soil temperature drops to -4~-5°C, it will be stressed by freezing damage. Root freezing damage is the main limiting factor for the...

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Problems solved by technology

[0004] The invention provides a method for breeding grape rootstocks with cold resistance and salt-alkali resistance, which solve

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