Interspecific cross breeding method of fagopyrum dibotrys and tartary buckwheat and application

Abstract

The invention relates to an interspecific cross breeding method of fagopyrum dibotrys and tartary buckwheat and application. According to the interspecific cross breeding method of the fagopyrum dibotrys and the tartary buckwheat and application, with tetraploid tartary buckwheat as female parents and a diploid fagopyrum dibotrys complex plant doubled line and/or tetraploid fagopyrum dibotrys which naturally exists as male parents, crossing is conducted, and a cross breed obtained by adopting the interspecific cross breeding method of the fagopyrum dibotrys and the tartary buckwheat can live through the winter in warm southern areas, so that years of asexual propagating expanding production and cultivation are achieved. According to the breeding method, not only is the interspecific heterosis of the fagopyrum dibotrys and the tartary buckwheat used, but also the heterosis among different fagopyrum dibotrys lines is used, the perennial characteristic and the multiple regeneration capability of the interspecific cross breed fagopyrum dibotrys are further improved, and thus the regeneration capability of branch cutting and multiple cutting of cross breed plants is strong enough to support overwintering and propagating expanding of multiple branch cutting, so that the heterosis of the cross breed is maintained permanently, and the cross breed can be widely applied and popularized in production.

Description

technical field [0001] The invention relates to a plant breeding and propagation method, in particular to a hybrid breeding method between golden buckwheat and tartary buckwheat and its application. Background technique [0002] There are about 23 species of buckwheat plants, including the annual cultivated species of common buckwheat (also known as sweet buckwheat, Fagopyrum esculentum) and tartary buckwheat (F. .pilus), golden buckwheat (F.cymosum) and other plants. The latter three perennial buckwheat species are often referred to as golden buckwheat complex (F. The interspecific hybridization of buckwheat is relatively difficult, and there is no example of successful hybridization and production utilization. [0003] The research on the utilization of heterosis in buckwheat is mainly on sweet buckwheat. Gao Lirong et al. took advantage of the self-incompatibility characteristics of different styles of different sweet buckwheat plants, first cultivated sweet buckwheat ...

AI Technical Summary

Problems solved by technology

Although no one has obtained male sterile lines in buckwheat, and there is no report on the use of sterile lines to produce hybrid buckwheat, but there are perennial buckwheat species in the genus Buckwheat, so the characteristics of perennial buckwheat can be used to utilize buckwheat heterosis and hybrids Production, production promotion and application through clonal propagation

No buckwheat hybrids based on this perennial trait have been reported