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Breeding & Seed Production of Hybrid Rice
Introduction
The aim of the course is to provide an insight into the CNRRI's procedures of breeding
hybrid rice and seed production for participants. The course is interactive and
participants are encouraged to share examples from their own experience and to learn
by networking with colleagues from other countries.
Goals
During the course, participants are expected to acquire knowledge and skills:
The procedures and practices of three-line and two-line hybrid rice breeding.
Cytoplasmic-genetic male sterility (CMS) and thermosensitive-genetic male sterility
(TGMS) systems.
Heredity mechanism and utilization of heterosis.
Identification/development and evaluation of CMS, and maintainer and restorer lines
for CMS and TGMS lines.
Principles and practices involved in hybrid rice seed production.
Purification technology for male-sterile line, maintainer line, restorer line.
Practice of evaluation in observation-, preliminary-, and advance-yield trials in
China and the conduct of hybrid rice yield trials.
Duration
Six weeks
Course Content
UnitⅠHybrid Rice Breeding
Basic principles and procedures for breeding of three-line hybrid rice
Heredity mechanism and utilization of heterosis
Breeding principles and practice of two-line hybrid rice
Breeding of hybrid rice using marker-assisted selection
UnitⅡHybrid Rice Seed Production
Summary of utilization of rice heterosis
Cytoplasmic-genetic male sterility (CMS) and thermosensitive-genetic male sterility
(TGMS) systems
Principles and practices involved in hybrid rice seed production
Purification technology for male-sterile line, maintainer line, restorer line
Unit Ⅲ Super Rice Breeding
Advances of super rice breeding programs in China
Development of ideal plant type of super rice
Genetics of yield factor and plant type factor
Application of molecular marker technology to breeding of super rice
Methodology
The course is a combination of classroom-based lectures, practical work, hands-on
exercises and interactions with farmers and group discussions with emphasis on practical
exercises in the field. Participants will learn about the scientific approach of
hybrid rice breeding, biotechnologies and CMS/TGMS systems, important seed production
techniques and genetics of yield factors. They will carry out exercises to understand
the decision making of farmers.
Training Team
The course is instructed by a team of experienced CNRRI scientists:
(The names are listed in alphabetical order.)
CAO Liyong
Ph. D., Hybrid Rice Breeder
Mr. Cao engages in breeding of CMS lines, restorer and maintainer lines and development
of parental lines designated to develop indica hybrid combinations. He has bred
and released several high-yielding rice hybrid varieties with good grain quality
and modest resistance to diseases.
CHENG Shihua
Ph.D., Hybrid Rice Breeder
Mr. Cheng is the Principal Scientist of China National Super Rice Program and a
hybrid rice breeder at CNRRI. He masterminded the pioneering paradigm shift from
hybrid rice breeding to super rice breeding. Application of techniques to change
rice breeders’ attitudes and thoughts in China led to significant improvement of
yield and grain quality of hybrid rice.
Mr. Cheng has a Ph.D. degree in hybrid rice genetics and breeding from Nanjing Agricultural
University, China (2000) and a M.S. degree with a distinctive mark in rice genetics
and breeding (1986) from South China Agricultural University. Mr. Cheng mainly engages
in breeding and crop genetics of rice hybrids and presides numerous national and
provincial key projects. He has developed several super rice varieties (combinations),
such as Guodao No.1 and Guodao No.3 through a strategy of indica/japonica hybridization.
LI Ximing
Ph. D., Rice Breeder & Geneticist
Mr. Li concentrates on genetics of pest resistance, mapping and characterization
of resistant genes and development of high-yielding, good quality, pests and diseases
resistant rice varieties. Ten new rice varieties have been developed and released
passing national and provincial trials under his leadership.
ZHANG Shanqing
Rice Breeder & Geneticist
Mr. Zhang’s main research interests lie in breeding of new plant type rice hybrids,
high quality hybrids, development of high quality CMS lines and two-line sterile
lines via molecular markers. He has developed CMS line Zhongzhe A and new hybrid
combinations including Zhongzheyou No. 1, Zhongzheyou No. 8 and Zhongzheyou 2838
that are welcomed by rice farmers.
ZHU Xudong
Rice Breeder & Geneticist
Mr. Zhu is an expert for two-line hybrid rice focusing on rice breeding and genetics.
He has developed five inbred rice varieties, one hybrid combination and one CMS
line with over 30 research articles being published.
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