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 ...

Examples

Embodiment 1

[0009] Using the male sterile mutant found in the wild kenaf species UG93 as the female parent and the cultivar Jinguang Wuthorn as the male parent, the UG93 cytoplasmic male sterile line K03A and its maintenance were bred by saturated backcrossing. Department K03B.

Embodiment 2

[0011] The male sterile kenaf wild species UG93×Jinguang thornless hybrid F1 generation was used as the female parent, and the full-leaf line L23 isolated from the kenaf cultivar Java Zizhong was used as the male parent. The saturated backcross method was used to select and breed The UG93 cytoplasmic male sterile line L23A and its maintainer line L23B were obtained.

Embodiment 3

[0013] The UG93 cytoplasmic male sterile line Yue was bred by the method of saturated backcrossing with the male sterile wild kenaf species UG93×Jinguang thornless hybrid F1 as the female parent and the kenaf cultivar Yuefeng No. 1 as the male parent. Feng 1A and its maintainer Yuefeng 1B.

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 ...

Examples

Embodiment 1

[0009] Using the male sterile mutant found in the wild kenaf species UG93 as the female parent and the cultivar Jinguang Wuthorn as the male parent, the UG93 cytoplasmic male sterile line K03A and its maintenance were bred by saturated backcrossing. Department K03B.

Embodiment 2

[0011] The male sterile kenaf wild species UG93×Jinguang thornless hybrid F1 generation was used as the female parent, and the full-leaf line L23 isolated from the kenaf cultivar Java Zizhong was used as the male parent. The saturated backcross method was used to select and breed The UG93 cytoplasmic male sterile line L23A and its maintainer line L23B were obtained.

Embodiment 3

[0013] The UG93 cytoplasmic male sterile line Yue was bred by the method of saturated backcrossing with the male sterile wild kenaf species UG93×Jinguang thornless hybrid F1 as the female parent and the kenaf cultivar Yuefeng No. 1 as the male parent. Feng 1A and its maintainer Yuefeng 1B.