Andonov B.,K Malkov Institute Of Plant Genetic Resources |
Boyadjieva D.,K Malkov Institute Of Plant Genetic Resources
Genetics and Breeding | Year: 2010
Genetic progress in grain yield is associated with wheat plant improvement. Yield potential in modern genotypes has not been completely realised. Open remains the question which are the successful GY parameters in the conventional breeding method for drought conditions, and which of them should be further estimated. For the purpose of this research a comparative field trial with varieties of the Institute in Sado developed the method of conventional breeding has been carried out. Yield parameters, plant and ear traits, kernel indices and phenological traits have been examined. It has been found that for the period from 1948 to 2006 there is a linear GY increase as the harvest index increase, stem height and vegetation period reduction, ear parameters -number and weight of kernels per ear and the respective weight of kernels per square metre have a positive effect on it. The above-ground dry matter is negatively associated with GY.