A method for breaking dormancy of giant bauhinia seeds

Abstract

The invention discloses a method for breaking dormancy of cercis gigantean seeds. The method comprises the following steps of (1) dehusking the matured cercis gigantean seeds, selecting the full seedswithout damage, soaking the seeds into clean water for 69 to 75h, cutting the radicle end of each seed, and soaking the seeds into a gibberellin solution for 12 to 48h, so as to obtain the pretreatedcercis gigantean seeds, wherein the content of gibberellin in each liter of gibberellin solution is 50 to 150mg; (2) culturing the pretreated cercis gigantean seeds for 10 days at constant temperature of 23 to 27 DEG C. The method has the advantages that the seeds are soaked in the clean water, then the radicle end of each seed is cut off, and the seeds are soaked by the gibberellin solution withcertain concentration, so that various factors of the dormancy of the cercis gigantean seeds can be effectively released, the cercis gigantean seeds are promoted to quickly break dormancy, and the germinating rate of the seeds is improved; the pretreated seeds are cultured at constant temperature, the seed dormancy breaking time is further shortened, and the germinating rate of the seeds is improved.

Description

technical field [0001] The invention belongs to the technical field of plant planting, and in particular relates to a method for breaking the dormancy of giant bauhinia seeds. Background technique [0002] Giant Bauhinia (Cercis gigantean) is a unique species of Bauhinia in my country. It is a tall deciduous tree with a height of 15m and a diameter at breast height of 50cm. It has a long life span and is a rare native tree species. Giant Bauhinia grows rapidly and has rhizobia, which can improve the soil fertility of forest land. The giant Bauhinia leaves are alternate, entire, heart-shaped or nearly round, and the branches are soft and drooping, dense and elegant. The calyx is purple-red, shaped like a purple butterfly, and the flowers open in front of the leaves from March to April, and the flowering period is about 15 days. The trees are full of red flowers in spring, the trees are full of leaves in summer, red fruits are abundant in autumn, and the branches are whirlin...

AI Technical Summary

Problems solved by technology

The giant bauhinia is usually propagated by sowing, but due to the double dormancy characteristics of the giant bauhinia seeds, under normal sowing conditions, it takes about 3 months for the seeds to emerge from the soil and germinate, and in actual production, low germination rates, uneven emergence and seedlings often occur. Specification confusion and other phenomena have brought certain difficulties to the production of giant Bauhinia seedlings

Long sowing and breeding cycle and low germination rate are not good for C. bauhinia seedlings. Aiming at the cause of dormancy of C. bauhinia seeds, it is of great significance to explore a fast and efficient method to relieve the dormancy of C. bauhinia seeds for improving the germination rate of nurseries and the rapid development of C. bauhinia industry.

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