Bupleurum chinense hybridization technology overcoming seed production difficulties in high-rainfall region

Abstract

The invention relates to a bupleurum chinense intraspecific or interspecific hybridization technology, in particular to a bupleurum chinense hybridization technology overcoming seed production difficulties in a high-rainfall region. Bupleurum chinense is a cross-pollination plant, a serious germplasm mixing and variety degeneration phenomenon is prone to be caused by nonstandard seed reproduction, and meanwhile due to long-term system seed selection, high-yield, efficient and high-adaptability seed selection of the bupleurum chinense is confronted with bottlenecks. In the high-rainfall region, bupleurum chinense hybridization and seed harvesting cannot be normally achieved through the conventional field castration, bagging and pollination technology. The technology comprises the following steps of 1, bupleurum chinense seedling growing; 2, plant management; 3, castration; 4, pollination; 5, seed harvesting. The breeding cycle is greatly shortened, and the problem that bupleurum chinense seed production in the high-rainfall region is difficult is solved; in addition, the technology cannot cause branch breakage caused by too heavy bagging and is widely suitable for intraspecific and interspecific hybridization of the bupleurum chinense varieties including bupleurum chinense, bupleurum scorzonerifolium, bupleurum marginatum and bupleurum falcatum.

Description

technical field [0001] The invention relates to an intraspecific or interspecific hybridization technique of Bupleuri, in particular to a hybridization technique of Bupleuri which overcomes the difficulty in seed production in areas with high rainfall. Background technique [0002] Radix Bupleuri (Radix Bupleuri) is a commonly used bulk medicinal material in my country. It is listed as the top grade in "Shen Nong's Herbal Classic". It has a medicinal history of more than 2,000 years. Fever, alternating cold and heat, poor liver qi, distending pain in the chest and hypochondriac, irregular menstruation, uterine prolapse, etc. It is the main drug and auxiliary drug of more than 70 classic famous prescriptions and Chinese patent medicines. Its medicinal material consumption ranks among the top five in the country, with an annual demand gap of more than 6,000 tons. It is a national strategic emerging industry and a "7+3" key support industry and product in Sichuan Province. Ther...

AI Technical Summary

Problems solved by technology

However, Bupleurum is a cross-pollinated plant, and irregular breeding can easily lead to serious germplasm mixing and species degradation, which seriously hinders the industrialization of cultivated Bupleurum.

At the same time, due to the long-term systematic breeding, the breeding of Bupleurum bupleurum for high yield, high efficiency and high adaptability is also facing a bottleneck

At present, the flowering time of Bupleurum in Sichuan is from May to August. During this period, there is a lot of rainfall. Conventional field emasculation, bagging and pollination techniques cannot normally achieve the hybridization and harvesting of Bupleurum.