Method for accelerating germination and seedling formation of afrocarpus gracilior

Abstract

The invention discloses a method for accelerating germination and seedling formation of afrocarpus gracilior. The method comprises the following steps: (1) removing pulp of ripe afrocarpus gracilior cones to obtain drupes; (2) soaking the drupes with liquid nitrogen, then breaking wood shells of the drupes to obtain seeds; (3) soaking the seeds with water, then accelerating germination to obtain the seeds with germinating embryos; (4) putting the seeds with germinating embryos into a culture substrate, culturing, transferring the seeds in the normal-temperature environment after the seeds germinate buds, and culturing to obtain the seedlings of afrocarpus gracilior. Through the method, the drupes of the afrocarpus gracilior are soaked with liquid nitrogen; the seed shells are artificially broken; the germination accelerating temperature and the culture substrate are optimized; the germination rate of the afrocarpus gracilior seeds is extremely obviously increased; the seedling raising time is effectively shortened. The method for accelerating germination and seedling formation of afrocarpus gracilior has the advantages of simple operation and low cost, and is suitable for actual production and application.

Description

technical field [0001] The invention relates to a method for raising seedlings of podocarpus pine, in particular to a method for promoting seed germination and seedling formation of Afrocarpus gracilior, and belongs to the field of sexual propagation of Afrocarpus gracilior. Background technique [0002] Afrocarpus gracilior (Afrocarpus gracilior) is an evergreen coniferous tree species of Podocarpacae (Podocarpacaeae), and it is one of the few evergreen coniferous tree species on the African continent. It comes from Africa in the east of the equator. It is found in Ethiopia, Kenya, Tanzania, Uganda, and in the Afromontane habitat of Africa, where it grows in dry forests between 4,000 and 9,000 feet. In addition to Africa, the fine-leaved African Podocarpus is widely cultivated in New Zealand, California, Florida and parts of the southern United States, usually as street trees, ornamental trees, tree screens and hedges. The fine-leaved African Podocarpus pine has an upright...

AI Technical Summary

Problems solved by technology

Seeds take longer to germinate and have a lower germination rate

As the fine-leaf African Podocarpus is the first tree species introduced from abroad, there is no relevant method for seed germination and artificial seedling cultivation in China

There are foreign reports about the artificial seedling raising method of African Podocarpus pine, which is to manually remove the fleshy part of the cones to expose the seeds, sow them directly on the seedling trays, and cover with a layer of light soil to keep the seedling substrate moist all the time. The seeds need 6 It takes more than one month to germinate. Not only does it take a long time for seed germination and management of seedling growth, but the germination rate is also very low, which needs to be improved urgently.

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