Treatment method of castanopsis delavayi seeds

Abstract

The invention discloses a treatment method of castanopsis delavayi seeds. The treatment method comprises the steps of castanopsis delavayi seed collection and treatment, seed pretreatment, seed hormone treatment, seed wet sand storage, germination acceleration and the like. By means of the treatment method, the mildew rate of the castanopsis delavayi seeds stored for 5 months can be smaller than 20%, the germination rate of the treated seeds can reach 85% or above, the physiological dormancy period of the seeds is shortened to about 5 months from original 8 months, and castanopsis delavayi seedlings bred through the method are strong, high in survival rate and extremely little in seed mildew and rot.

Description

technical field [0001] The invention belongs to the field of seed treatment, and in particular relates to a method for treating Castanopsis alpina seeds. Background technique [0002] Castanopsis alpine ( Castanopsis delavayi Franch.) is a family of Fagaceae (Fagaceae) of the genus Castanopsis ( Castanopsis ) large evergreen broad-leaved trees, mainly distributed in Southwest China, is the main dominant species or common species of evergreen broad-leaved forests in the Yunnan Plateau and Sichuan-Guizhou Province. one of the main types. The seeds of Castanopsis alpinus are edible, and the starch content of the seed kernel is as high as 86.86%. It is one of the tree species with the highest starch content in woody plants. Its wood is yellow-brown, with fine structure, good hardness, strength and toughness. It is suitable for outdoor materials and has high value. It can be used for construction, sleepers, vehicles, fuel charcoal and other materials. Castanopsis alpine se...

AI Technical Summary

Problems solved by technology

Although the resources of Alpine Castanopsis are widely distributed and the output is large in my country, most of them are in the wild state. Cultivating a large number of seedlings, artificial domestication and large-scale breeding and cultivation are effective means to cultivate the Alpine Castanopsis industry and protect its wild resources. In terms of seedling cultivation, there are currently no reports of successful asexual reproduction such as cuttings and tissue culture at home and abroad. The artificial cultivation is mainly realized through seed breeding. Seeds are prone to mildew and rot in conventional indoor storage. The germination rate and emergence rate of seeds after 6-8 months of storage are not high, and the germination rate generally does not exceed 10%.

[0003] In my country, there are no reports on the seedling breeding of Castanopsis alpinus in seedling breeding, cuttings, tissue culture, etc., and the research reports on the seed biology of Castanopsis alpina are only the effects of litter, cryopreservation, seed rain and seed bank (① Li Xiaoshuang, Peng Mingchun, Chen Junwen, Yuan Chun. Effects of litter and sowing time on the germination of Castanopsis alpinus and Cyanobacteria yunnanensis; ②Lu Ling, Wang Haiying, Tuya, Men Zhonghua, Cui Kai, Zhao Yaoxin. Cryogenic preservation of Castanopsis alpina seeds;③ Fei Shimin, Peng Zhenhua, Yang Dongsheng, Zhou Jinxing, He Yaping, Wang Peng, Chen Xiuming, Jiang Junming. Study on the seed rain and surface seed bank of Castanopsis chinensis population in Southwest Sichuan; there are some reports on the ecology of Castanopsis alpine community (① Peng Mingchun, Dang Chenglin. Community Diversity of Castanopsis Yuanjiang Community and Alpine Castanopsis Community in Jizu Mountain, Yunnan Province; ②Peng Mingchun, Dang Chenglin. Study on Plant Interspecific Combination of Castanopsis Yuanjiang Community and Alpine Castanopsis Community in Jizu Mountain, Yunnan; ③Yang Jianjun , Su Wenhua, Wang Lingling, Yang Rui, Yang Bo, Zhang Borui. Intraspecific variation of alpine castor leaf traits and their relationship with environmental factors)

[0004] The tropical and subtropical areas of my country are the natural distribution areas of wild castanos, mostly in mountainous and poor areas. Castanos has potential development and application value, and its resource development and large-scale promotion require a large number of seedlings. At present, there are no literatures at home and abroad. The research and reports on the cultivation of Castanopsis chinensis seedlings, its germination and emergence rate are extremely low, which is not conducive to the supply of Castanopsis chinensis seedlings and the further development of the industry