Artificial pollination and breeding method of salt-resisting and fast-growing fraxinus velutina

Abstract

The invention discloses an artificial pollination and breeding method of salt-resisting and fast-growing fraxinus velutina. The artificial pollination and breeding method comprises the following steps: (1) selecting male and female parents; (2) determining pollination time; (3) collecting male parent pollen; (4) storing the male parent pollen; (5) carrying out an artificial pollination procedure;(6) obtaining hybrid seeds; (7) sowing the seeds and culturing seedlings. The method disclosed by the invention is characterized by determining an optimal pollination period; the pollination is artificially controlled and is purposefully polymerized with an existing breeding method for good properties of fraxinus chinensis germplasm; the difficulty of obtaining fraxinus velutina new germplasm withthe stable and good properties including salt resistance and fast growing and the like by artificial controlled pollination is effectively overcome, and the aims of accurately and rapidly breeding the fraxinus velutina is realized. By adopting the method disclosed by the invention, a lot of excellent germplasms can be obtained within short time and requirements on high-quality germchits of the fraxinus velutina in China are met.

Description

technical field [0001] The invention relates to a method for plant hybridization and breeding, in particular to a method for artificial pollination and breeding of salt-tolerant fast-growing white wax tomentosa. Background technique [0002] There are more than 70 species of Fraxinus L. plants in the world, and 34 species have been found in China, of which 26 species are native and 8 species are introduced from abroad (Flora of China, 1992). Fraxinus velutina Torr. and Fraxinus pennsylvanica are deciduous trees of the genus Fraxinus in the Oleaceae family (Oleaceae). They are species of Fraxinus successfully introduced from the United States in my country. It is an important tree species for saline-alkali land afforestation and urban landscaping in my country. [0003] There are many natural variations in the species of Ash. At present, there are many researches on its selective breeding at home and abroad, but there are not many research reports on the interspecific and int...

AI Technical Summary

Problems solved by technology

However, the use of artificial pollination to obtain new germplasm of A. tomentosa with stable and excellent traits such as salt tolerance and fast growth, and to achieve accurate and rapid breeding of A. tomentosa is still a difficult problem in current technology, and it still cannot meet the domestic demand for high-quality seedlings of A. tomentosa

Images