Genetic contribution of Chinese landraces to the development of sorghum hybrids
文献类型: 外文期刊
第一作者: Li, Y
作者: Li, Y;Li, CZ
作者机构:
关键词: Sorghum bicolor;Chinese origin;hybrid;Kaoliang;landrace;sorghum
期刊名称:EUPHYTICA ( 影响因子:1.895; 五年影响因子:2.181 )
ISSN: 0014-2336
年卷期: 1998 年 102 卷 1 期
页码:
收录情况: SCI
摘要: 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.
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