A practical protocol to accelerate the breeding process of rice in   semitropical and tropical regions

doi:10.1270/jsbbs.65.233

CORC > 北京大学 > 化学与分子工程学院

	A practical protocol to accelerate the breeding process of rice in semitropical and tropical regions
	Li, Jun ; Hou, Xianhui ; Liu, Jindi ; Qian, Changgen ; Gao, Rongcun ; Li, Linchuan ; Li, Jinjun
刊名	BREEDING SCIENCE
	2015
关键词	Oryza sativa variety breeding life cycle short-day fast proliferation PHOTOPERIOD-SENSITIVITY DOMESTICATION HISTORY
DOI	10.1270/jsbbs.65.233
英文摘要	Breeding of excellent rice varieties is essential for modern rice production. Typical breeding procedures to introduce and maintain valuable agricultural traits require at least 8 generations from crossing to stabilization, always taking more than 4-5 years of work. This long and tedious process is the rate-limiting step in the development of new varieties, and therefore fast culturing methods are in urgent need. Taking advantage of early flowering characteristics of light-sensitive rice under short-day conditions, we have developed a practical protocol to accelerate the breeding cycle of rice, which we have termed the "1 + 2", "2 + 2", "1 + 3", and "0 + 5" methods according to the different rice varieties and different breeding purposes. We have also incorporated several techniques, including glume cutting, seed desiccation at 50 degrees C in a drier seed dormancy breakage with low concentration of HNO3, and direct seeding. Using the above strategy, we have shortened the life cycle of light-sensitive rice varieties to about 70 days, making it possible for several rice cultivars to proliferate 4-5 generations in a single calendar year. This protocol greatly accelerates the process of new variety breeding, and can be used in rice research for shortening the process of genetic analysis and the construction of mapping populations.; Program of Rice Breeding and Industrialization in Zhejiang [2010C12002]; Science and Technology Project in Jiaxing [2011AZ1022, 2013BZ26002]; SCI(E); PubMed; ARTICLE; lijunscib@163.com; 3; 233-240; 65
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/418949]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Li, Jun,Hou, Xianhui,Liu, Jindi,et al. A practical protocol to accelerate the breeding process of rice in semitropical and tropical regions[J]. BREEDING SCIENCE,2015.
APA	Li, Jun.,Hou, Xianhui.,Liu, Jindi.,Qian, Changgen.,Gao, Rongcun.,...&Li, Jinjun.(2015).A practical protocol to accelerate the breeding process of rice in semitropical and tropical regions.BREEDING SCIENCE.
MLA	Li, Jun,et al."A practical protocol to accelerate the breeding process of rice in semitropical and tropical regions".BREEDING SCIENCE (2015).