A kind of artificial detasseling and hybridization control pollination method of Robinia pseudoacacia

Abstract

The invention discloses an artificial emasculation and hybrid control pollination method of robinia pseudoacacia L.. The method comprises the following steps of pollenator making, selection of hybrid male parent and female parent plants, pollen collecting, artificial pollination, pollinated female plant management and hybrid ripe pod harvesting. According to the artificial emasculation and hybrid control pollination method of the robinia pseudoacacia L., the technical steps of emasculation and pollination for the robinia pseudoacacia L. are described in detail, petals and pistil are not damaged, the artificial pollination ripening rate of the robinia pseudoacacia L. can be significantly increased, and the artificial hybridization breeding success rate of the robinia pseudoacacia L. is increased.

Description

technical field [0001] The invention belongs to the technical field of plant breeding, and in particular relates to a method for artificial detasseling and hybridization control pollination of Robinia pseudoacacia. Background technique [0002] Black locust (Robinia pseudoacacia L.) is a large broad-leaved tree of the Fabaceae Papilionaceae Robinia genus. It is native to the United States, was introduced to Europe in the early 17th century (1601), and spread to European countries in the 18th century. At the end of the 19th century, the Germans first introduced the source of Robinia acacia to Qingdao, China. From the 1940s to the 1960s, several batches of sources of Robinia locust from Japan, the United States, and North Korea were planted in Liaodong, Tianshui, Gansu, Changsha, Hunan, and North China. At the end of the 1980s, there were 24 provinces, municipalities, and autonomous regions in my country that planted Robinia locusts, and only 6 provinces including Hebei, Henan,...

AI Technical Summary

Problems solved by technology

Therefore, when the locust flower is open, the anthers and stigmas cannot be seen from the outside, and the stamens and pistils can only be exposed by pulling the petals with the help of tools, which brings great difficulty to artificial pollination in hybrid breeding.

Artificial pollination not only removes the stamens, but also removes the petals to expose the stigma, which brings damage to the flowers, affects their normal physiological and biochemical processes, and makes the seed setting rate of artificial pollination lower than the natural seed setting rate.

The natural seed setting rate of Robinia pseudoacacia is low, an average of 30%, which limits the success rate of artificial cross breeding of Robinia pseudoacacia

The result of our experiment is that, using conventional methods to artificially pollinate Robinia pseudoacacia, the seed setting rate is 1% to 5%. In addition, in the literature "Flowering Pollination and Mating Mode of Robinia pseudoacacia" Journal of Northeast Forestry University, the average fruit setting rate of artificial emasculation hybridization is only 3.56%. %; the so far reported seed setting rate of artificial pollination of Robinia pseudoacacia is also within this range

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