Hibiscus cannabinus l. H040 cytoplasmic male sterility phyletic breeding method

Abstract

The invention relates to a method for breeding kenaf H040 cytoplasmic male sterile line, and belongs to the technical field of breeding of crop male sterile lines. The method takes kenaf wild species H040 or filial generation inherited with cytoplasm of the kenaf wild species H040 as female parent, and takes UG 93 cytoplasmic male sterile maintainer line or kenaf common culture variety as male parent; the female parent and the male parent carry out saturated backcross; the H040 cytoplasmic male sterile line, which is similar to the male parent and is orderly and consistent and exhibits male sterility, is selected and bred; and the backcross female parent is the male sterile maintainer line. The method provides new source of the cytoplasm for the breeding of the kenaf male sterile line, and can combine hybridized combination with comparative advantages.

Description

Technical field: [0001] The invention relates to a breeding method, in particular to a method for selecting a cytoplasmic male sterile line of kenaf. Background technique: [0002] Kenaf, also known as "kenaf", is an annual bast fiber crop of the Malvaceae Hibiscus genus. Because kenaf is cultivated for the purpose of harvesting bast fibers or stems, the heterosis rate is as high as 35% to 40%. The utilization of kenaf heterosis has long been the main goal of kenaf breeding at home and abroad. After years of research, the Cannabis Research Institute of the Chinese Academy of Agricultural Sciences invented the chemical male-killing hybrid seed production method of kenaf and applied it in kenaf breeding. However, because kenaf is an infinite inflorescence, multiple application of pesticides is required, and insect pollination is affected after application, so artificial pollination is required. In order to save costs, only to promote F in production 2 generation (hybrid sec...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of a single cytoplasmic source of kenaf hybrids, and to provide a new breeding method for cytoplasmic male sterile lines of kenaf