1.Introduction To meet the food demand of the Chinese people in the 21st century,a super-rice breeding program aimed at increasing rice yield was initiated by the Ministry of Agriculture of China in 1996.It is divided...1.Introduction To meet the food demand of the Chinese people in the 21st century,a super-rice breeding program aimed at increasing rice yield was initiated by the Ministry of Agriculture of China in 1996.It is divided into four phases,with the following yield targets:10.5 t ha^(-1)(phase I,1996–2000),12 t ha^(-1)(phase II,2001–2005),13.5 t ha^(-1)(phase III,2006–2015),and 15 t ha^(-1)(phase IV,2016–2020)~[1].The average yield of super-rice should be verified in two locations of 6.7 ha each in two consecutive years.展开更多
Hybrid rice technology has made a significant progress in recent years in more than twenty rice-growing countries. The Asian Development Bank （ADB） provided funds for International Rice Research Institute （IRRI） t...Hybrid rice technology has made a significant progress in recent years in more than twenty rice-growing countries. The Asian Development Bank （ADB） provided funds for International Rice Research Institute （IRRI） to support the project of Sustaining Food Security in Asia through Development of Hybrid Rice Technology 2002-2004 mainly practiced in nine countries, such as Bangladesh, India, Indonesia, Korea, Myanmar, Philippines, Sri Lanka, Thailand and Vietnam.展开更多
Breeding sterile lines is the key to the development of hybrid rice with wide adaptability. However, at present, few wide-adaptability sterile lines have been applied in production practice. In this study, Yungu 3A, a...Breeding sterile lines is the key to the development of hybrid rice with wide adaptability. However, at present, few wide-adaptability sterile lines have been applied in production practice. In this study, Yungu 3A, a new WA-type Indica CMS line with good grain quality, was developed by hybridization between Yunfeng 66A with wide adaptability as female parent and F1 plants of Yunfeng 66B/D62B as male parent and continuous backcrossing. According to the results, the finally obtained lndica CMS line Yungu 3A has good plant type and leaf shape, strong tillering ability, excellent flowering habit, stable and complete male sterility with the sterile plant rate and pollen sterility rate of 100%, strong combining ability, high outcrossing rate, low sensitivity to light and temperature, and strong disease resistance, which was approved by Yunnan Provincial Crop Variety Appraisal Committee in 2013. Yungu 3A is conducive to the development of new hybrid rice combinations with good quality and wide adaptability, exhibiting a promising prospect of application.展开更多
文摘1.Introduction To meet the food demand of the Chinese people in the 21st century,a super-rice breeding program aimed at increasing rice yield was initiated by the Ministry of Agriculture of China in 1996.It is divided into four phases,with the following yield targets:10.5 t ha^(-1)(phase I,1996–2000),12 t ha^(-1)(phase II,2001–2005),13.5 t ha^(-1)(phase III,2006–2015),and 15 t ha^(-1)(phase IV,2016–2020)~[1].The average yield of super-rice should be verified in two locations of 6.7 ha each in two consecutive years.
文摘Hybrid rice technology has made a significant progress in recent years in more than twenty rice-growing countries. The Asian Development Bank （ADB） provided funds for International Rice Research Institute （IRRI） to support the project of Sustaining Food Security in Asia through Development of Hybrid Rice Technology 2002-2004 mainly practiced in nine countries, such as Bangladesh, India, Indonesia, Korea, Myanmar, Philippines, Sri Lanka, Thailand and Vietnam.
基金Supported by Project for Introduction and Training of High-Level Technological Talents of Yunnan Province(2009CI126)New Product Program of Yunnan Province(2011BB002)Project for Construction of Science and Technology Innovation Platform of Yunnan Province(2013DH006)
文摘Breeding sterile lines is the key to the development of hybrid rice with wide adaptability. However, at present, few wide-adaptability sterile lines have been applied in production practice. In this study, Yungu 3A, a new WA-type Indica CMS line with good grain quality, was developed by hybridization between Yunfeng 66A with wide adaptability as female parent and F1 plants of Yunfeng 66B/D62B as male parent and continuous backcrossing. According to the results, the finally obtained lndica CMS line Yungu 3A has good plant type and leaf shape, strong tillering ability, excellent flowering habit, stable and complete male sterility with the sterile plant rate and pollen sterility rate of 100%, strong combining ability, high outcrossing rate, low sensitivity to light and temperature, and strong disease resistance, which was approved by Yunnan Provincial Crop Variety Appraisal Committee in 2013. Yungu 3A is conducive to the development of new hybrid rice combinations with good quality and wide adaptability, exhibiting a promising prospect of application.
