[Genetic improvement of cotton varieties in Huang-Huai region in China since 1950's. III. Improvement on agronomy properties, disease resistance and stability].
Data from a set of 5-location and 2-year experiments on 10 representative historical cotton varieties and the data of Huang-Huai Regional Cotton Trials from 1973 to 1996 were analyzed to estimate the effects of genetic improvement in agronomy properties, disease resistance and stability of cotton in Huang-Huai Region in China. The results indicated that a great genetic progress of earliness and disease resistance had been achieved by breeding programs since 1950's. The maturity was shortened 3-5 days; The rate of preforst yield was increased about 7 percentages. The problem of resistance to Fususium wilt has been solved and the resistance to Verticillum wilt was improving. Some progress in stability of cotton varieties also has been achieved by breeding programs since 1950.
Jiang
B G
BG
Institute of Genetics, Chinese Academy of Sciences, Beijing 100101, China.
Kong
F L
FL
Zhang
Q Y
QY
Yang
F X
FX
Jiang
R Q
RQ
D002681:China; D003368:Gossypium / Q000235:genetics*; D010935:Plant Diseases / Q000235:genetics*; D013997:Time Factors