Genetic contribution of Chinese landraces to the development of sorghum hybrids |
| |
| Authors: | Yu Li Cuizhen Li |
| |
| Institution: | (1) Chinese Academy of Agricultural Sciences, Institute of Crop Germplasm Resources, 30 Bai Shi Qiao Road, Beijing, 100081, The People's Republic of China |
| |
| Abstract: | The origin of sorghum hybrids developed in China in the past several decades was analyzed in order to assess genetic contribution
of Chinese landraces (Kaoliang) to the sorghum hybrids, to evaluate the genetic diversity existing in the A-lines and R-lines
mainly used in breeding programs, and to outline a proper strategy for the future development of sorghum improvement. Basically,
Chinese sorghum landraces have played an important role in the development of R-lines while foreign germplasm have played
an essential role in the development of A-lines. Because cytoplasmic male-sterility has not been certainly found in Chinese
sorghum, cytoplasmic and nuclear genetic backgrounds of A-lines will continue to depend on foreign sorghum types in the future.
Genetic diversification including cytoplasmic diversification has to be a priority in future hybrid breeding and production.
To obtain superior hybrid vigor, Chinese sorghum germplasm will have to play a more important role in hybrid breeding programs
in the future.
This revised version was published online in July 2006 with corrections to the Cover Date. |
| |
| Keywords: | Sorghum bicolor Chinese origin hybrid Kaoliang landrace sorghum |
| 本文献已被 SpringerLink 等数据库收录！ |
|
