Hybrid seed production method for stevia rebaudiana

Abstract

The invention discloses a hybrid seed production method for stevia rebaudiana. The method comprises the steps that firstly, cutting propagation is conducted on parent plants of the stevia rebaudiana, colonies which are consistent in genotype and reproduction characteristic are formed, the colonies serve as parent strains of hybrid seed production, two of the parent strains are planted in the same field in a lined and spaced mode, natural hybridization between the parent strains is conducted, and stevia rebaudiana hybrid seeds can be obtained. By means of the method, defects that judicious hybrid cannot be conducted on seedling colonies of stevia rebaudiana seeds, the colony segregation is large, and characters are not stable are overcome, and the excellent stevia rebaudiana hybrid seed combination which is comparatively stable in character can be provided.

Description

technical field [0001] The invention relates to a stevia hybrid seed production method, which relates to the stevia hybrid seed production technology, more specifically, a stevia hybrid seed production method. Background technique [0002] At present, the varieties of stevia used are all conventional varieties selected by systematic breeding or hybrid offspring separation. The technical level of variety breeding is low, which seriously limits the development of stevia production. According to the genetic law of crops, hybrid seed production technology can be used to take advantage of the heterosis of the F1 generation to combine the advantages of different Stevia parents, greatly improve the economic yield and quality of Stevia, and bring new economic growth points to the seed industry. [0003] According to the general method of hybrid seed production of crops, the seeds of the parents are directly broadcast or transplanted into a piece of farmland for mutual hybrid seed pr...

AI Technical Summary

Problems solved by technology

However, if Stevia rebaudiana uses the seedlings of two populations to carry out natural hybridization in the field, not only will there be mutual hybridization between the two populations, but there will also be self-crossing between the plants within the population, and the population characters of its progeny will be disorderly and disorderly, unable to form sustainable Predicted stable state, also cannot be applied to production