Polyploid rice two-line restorer line and breeding method thereof

US11039587B2 · kind B2 · utility

Assignees

• WUHAN POLYPLOID BIOTECHNOLOGY CO., LTD · CN
• Hubei University · CN

Inventors

• Detian Cai · Hubei, CN
• Zhaojian Song · Hubei, CN
• Xianhua Zhang · Hubei, CN
• Yuhua Liu · Hubei, CN
• Wei-Ya Wang · Nanjing, CN
• Yuchi He · Hubei, CN

Key dates

• Filing date: Mar 20, 2018
• Grant date: Jun 22, 2021
• Expiry date: Mar 16, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01H6/4636
• WIPO field: Food chemistry
• WIPO sector: Chemistry

Abstract

A breeding method of a polyploid rice two-line restorer line includes determining hybrid parents for breeding the restorer line; breeding a restorer line of an indica sterile/japonica restorer type, or breeding a restorer line of a japonica sterile/indica restorer type, and carrying out backcrossing or composite hybridization after hybridization of the parents; selecting a single plant that meets the breeding goal, carrying out composite hybridization again and carrying out preliminary molecular marker detection; comparing, and selecting a single plant with good traits for continuous selfing until the line is basically stable; selecting a stable line with good traits and detection molecular markers; carrying out test-crossing on the preferred line as a male parent with different types of polyploid sterile lines; and selecting a good hybrid combination and a restorer line thereof.