Genetic breeding method of oil-tea camellia

Abstract

The invention discloses a genetic breeding method of oil-tea camellia. The genetic breeding method comprises the following steps: (A) collecting oil-tea camellia pollen of the oil-tea camellia in theXinyang prefecture at a full-bloom stage; after naturally drying, preserving at 4 DEG C; standing for 1 to 2h under a room-temperature condition before pollination; preparing the oil-tea camellia pollen and ultrapure water according to the mass ratio of 1 to (500 to 1000) to obtain oil-tea camellia pollen liquid; then spraying the oil-tea camellia pollen liquid on female plants of the oil-tea camellia in the south of Hunan for 2 to 4 times, wherein the time interval of each time of spraying is 3 to 5 days; fertilizing according to fertilization conditions of a land of the pollinated female plants; after fruits become ripe, collecting fruits to obtain hybridized oil-tea camellia seeds and pre-treating the hybridized seeds; (B) preparing a base material; (C) flattening a seedling bed; (D) sowing the seeds and coverings oil; (E) managing a nursery garden; (F) transplanting tree seedlings; (G) fostering, managing and protecting the tree seedlings. By adopting the genetic breeding method ofthe oil-tea camellia, an oil-tea camellia variety applicable to the regions in the south of Hunan can resist accidental low-temperature weathers and the survival rate of oil-tea camellia seedlings isimproved.

Description

technical field [0001] The invention relates to the technical field of agriculture and forestry seedling cultivation. More specifically, it relates to a genetic breeding method of camellia oleifera. Background technique [0002] Camellia oleifera is an evergreen plant of the family Theaceae Camellia. It is a unique woody oil tree species in my country. It is also known as the world's four largest woody oil tree species together with olive, oil palm, and coconut. It is also one of the most widely distributed and largest cultivated economic forest tree species in China. . [0003] Camellia oleifera is not suitable for planting in cold areas. Xinyang area belongs to the northern fringe area of ​​camellia oleifera planting. Camellia oleifera in this area has a certain degree of stress resistance after many winters, that is, in low temperature (such as -5°C-9°C) weather Under certain conditions, it can still survive and grow normally, bloom and bear fruit. With global climate c...

AI Technical Summary

Problems solved by technology

With global climate change, the areas south of Hunan occasionally experience sudden heavy snowfalls in winter, and the temperature can drop to close to -5°C. Camellia oleifera seedlings in the areas south of Hunan may die in such cold conditions. Even Camellia oleifera over 5 years old may be seriously affected and affect the flowering and fruiting in the coming year

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