Breeding for grain [yield] and components of [grain yield] in wheat
2007
Mladenov, N.(Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia)) | Dencic, S.(Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia)) | Hristov, N.(Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia))
Twenty wheat cultivars were studied to determine the contribution of breeding to wheat yield increases in the last 50 years. Chosen for the study were cultivars released in a variety of different years, each representing a different period of breeding. Only cultivars that played a major role in the wheat production of the Republic of Serbia were used. An increase in yield of 128 kg/cultivar was recorded between cultivars from different periods of selection. Since the cultivars studied were released at three-to-four-year intervals, the genetic potential for yield was increased at an approximate rate of 32-43 kg/year. The cultivars tested differed significantly with respect to their morphological characteristics as well as yield components. In the newer cultivars, significant increases in grain number per spike and 1,000-grain mass were observed. The results of the study indicate that breeding has contributed significantly to increasing the volume of wheat production in the country.
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