Improving seed production to speed up the global commercialization of hybrid rice
2001
Mao, Changxiang
Hybrid rice in China and other countries has yielded 20-30% higher than the best inbred varieties. This yield advantage can contribute considerably to national and international efforts to achieve food security and alleviate poverty. In recent years, the hybrid rice-growing area in China has become more than 50% of the total rice area. Its commercial cultivation in developing countries outside China has expanded rapidly also, especially in Vietnam and India. Many stable cytoplasmic male sterile (CMS) lines and restorer lines have been developed by scientists from China, the International Rice Research Institute, India, Vietnam, and other countries. By using CMS lines with good general combining ability and specific combining ability (including environmental genetic male sterile lines) and R lines, more and more rice hybrids have been released and commercialized not only by breeding institutes but also by the seed sector. Breeding heterotic rice hybrids has thus become easier.
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