Breeding method for improving wild rice

Abstract

The invention discloses a breeding method for improving wild rice. The method comprises the following steps: rootstock and scion selection, a grafting period, grafting, management after grafting, transplanting after surviving, harvesting and stubble cutting. The method provided by the invention utilizes an excellent rice cultivation variety as a rootstock variety, can provide a strong root systemfor wild rice scions, and is beneficial to improving traits of the wild rice; the method can avoid difficulties such as incompatibility and acarpous performance of distant hybridization through a grafting manner; the method can improve bad traits of the wild rice, and can screen useful resources in grafted and fruited progeny; and the method can continuously provide mutant seeds once grafting is successful, shortens a breeding process and improves breeding efficiency.

Description

technical field [0001] The invention relates to the field of rice planting, in particular to a breeding method for improving wild rice. Background technique [0002] Rice is the main food crop in the world, and a quarter of the arable land in my country is planted with rice. Therefore, rice production, especially sustainable production, is of great significance to my country's food security. At present, there are problems such as close genetic relationship and narrow genetics of rice varieties in my country, which limit the increase of rice yield and total yield, and accelerate the withdrawal of excellent varieties from production. [0003] For this reason, scientists seek to use the favorable traits of wild rice to improve cultivated rice, but the hybridization between wild rice and cultivated rice is not compatible, and the hybridization is difficult to succeed, and distant species cannot bear fruit or abort. These disadvantages limit the utilization efficiency of wild ri...

AI Technical Summary

Problems solved by technology

At present, there are problems such as close genetic relationship and narrow genetics of rice varieties in my country, which limit the improvement of rice yield and total yield, and accelerate the withdrawal of excellent varieties from production.

[0003] For this reason, scientists seek to use the favorable traits of wild rice to improve cultivated rice, but the hybridization between wild rice and cultivated rice is not compatible, the hybridization is difficult to succeed, and distant species cannot bear fruit or abort

These disadvantages limit the utilization efficiency of wild rice