Distant hybridization breeding method among three categories of shoal spartina alterniflora loisel, maize and rice

Abstract

The invention discloses a distant hybridization breeding method among three categories of shoal spartina alterniflora loisel, maize and rice. The method comprises the following steps: carrying out hybridization by using maize as a male parent and using rice as a female parent to obtain a first hybridized generation of the maize and the rice; carrying out hybridization by using shoal spartina alterniflora loisel as a male parent and using the first hybridized generation of the maize and the rice as a female parent to obtain a distant hybridized seed among the three categories of the shoal spartina alterniflora loisel, the maize and the rice; and carrying out pedigree selective breeding on the distant hybridized seed among the three categories of the shoal spartina alterniflora loisel, the maize and the rice so as to select and breed out a salt resistant and high-yield seed. The invention selects and breeds a new variety suitable for growing on shoals by excavating and creating the high-quality high-yield economic property of the maize and the rice and germplasm resources of salt resistant genes of the spartina alterniflora loisel, and the new variety can be used as a grain and a feed. The invention has huge economic value and social meaning to develop and utilize wide shoals of China.

Description

Technical field: [0001] The invention relates to a plant hybrid breeding method. Background technique: [0002] At present, 14 species of Spartina alterniflora have been identified internationally, and Spartina alterniflora is the most widely planted on my country's beaches. Spartina alterniflora was introduced into my country from the United States in 1979 by Professor Zhong Chongxin of Nanjing University. It is a perennial herbaceous plant belonging to the Poaceae family. It has strong salt tolerance and flood tolerance, and is most suitable for growing in the intertidal zone of the beach. It has the functions of protecting the beach, promoting siltation and making land, greening the beach, and improving the ecological environment of the beach. Because of its tall plant and high grass yield, Spartina alterniflora is suitable for grazing and raising herbivores such as cattle and sheep. It can be used as livestock and poultry feed, fish bait, fertilizer and fuel, and has b...

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Problems solved by technology

[0004] Studies have found that Spartina does have excellent characteristics such as salt tolerance, flood tolerance, and strong fecundity, but Spartina has small seeds, low seed setting rate, and is difficult to harvest.

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