Title:
SMALL-GRAIN TYPE STERILE RICE LINE BREEDING METHOD, AND SIMPLE SEED PRODUCTION METHOD FOR HYBRID RICE
Document Type and Number:
WIPO Patent Application WO/2018/032925
Kind Code:
A1
Abstract:
The invention discloses a small-grain type sterile rice line breeding method, and a simple seed production method for a hybrid rice. The small-grain type sterile line rice breeding method comprises the following steps: hybridizing C815S as a female parent with Qi-Gui B as a male parent to produce a F1 hybrid; growing the F1 and hybridizing the F1 with a H155S as a female parent to produce a F1' hybrid; growing the F1' to obtain a F2' generation, then isolating, from the F2' generation and a F3' generation, an individual plant with an ideal plant architecture, strong tillering, shorter height, and smaller grain size; and performing, for two or more generations, directional breeding to obtain a small-grain type sterile line. The small-grain type sterile rice line bred using the sterile rice line breeding method has the advantages of a high out-crossing setting rate, high germination potential and seedling survival rate, excellent storage stability, and a low black smut incidence. Using the invention as the basis for seed production for a small-grain type sterile rice line and large-grain type restorer rice lice allows simultaneous harvesting of the male parent and the female parent and selection based on grain thickness, thereby simplifying seed production for a hybrid rice.
Inventors:
TANG WENBANG (CN)
XIONG YUEDONG (CN)
DING XINCAI (CN)
YI GUOLIANG (CN)
XU QIANG (CN)
FENG NING (CN)
XIONG YUEDONG (CN)
DING XINCAI (CN)
YI GUOLIANG (CN)
XU QIANG (CN)
FENG NING (CN)
Application Number:
PCT/CN2017/093249
Publication Date:
February 22, 2018
Filing Date:
July 18, 2017
Export Citation:
Assignee:
HUNAN HOPING SEEDS SCIENCE & TECH INCORPORATED COMPANY (CN)
International Classes:
A01H1/02; A01H1/04
Foreign References:
| CN105532433A | 2016-05-04 | |||
| CN102948361A | 2013-03-06 | |||
| CN106416997A | 2017-02-22 | |||
| CN101836580A | 2010-09-22 | |||
| CN102124941A | 2011-07-20 | |||
| CN105104167A | 2015-12-02 |
Other References:
XU, ERBO ET AL.: "Application of Small Grain Recessive Gene in the Mechanical Sorting of Hybrid Rice Seeds", CHINA RICE, vol. 21, no. 3, 31 December 2015 (2015-12-31), pages 8 - 11
Attorney, Agent or Firm:
CHANGSHA ZHIRONG PATENT AGENT FIRM (CN)
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