Breeding method for bluish dogbane Yebai cytoplasmic male sterile line

Abstract

The breeding method for Yebai cytoplasmic sterile line includes adopting the filial generation of wild wild kenaf variety UG93 or its filial generation as female parent and cultivated kenaf variet as male parent for saturated backcrossing to selecting Yebai type regular cytoplasmic male sterile line with character similar to that of the male parent; and backcrossing to obtain male parent male sterile line. The selected male sterile line may be further naturally crossed with other kenaf variety to obtain cross combination with powerful heterotic vigor.

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, the F2 generation (the second generation of hybrids) has ...

AI Technical Summary

Problems solved by technology

However, the F2 generation plants are not neat, and the heterosis rate is significantly reduced, so the area of ​​hybrid kenaf that has been promoted in kenaf production so far is extremely limited.