Yield Stability of Forage Sorghum in Northeastern Brazil
- M. A. Faris,
- M. R. A. de Araujo and
- M. de A. Lira
Ten forage sorghum [Sorghum bicolor (L.) Moench] selections, one commercial sorghum cultivar, and one local maize (Zea mays L.) cultivar were grown in replicated trials at 12 locations in the semi-arid tropics of northeastern Brazil for 3 years. Superiority of some of the new selections in forage dry matter production over the commercial cultivar and corn check was demonstrated.
The combined analysis revealed that entries (G), environments (E), and the G × E interaction were highly significant. However, some nonlinearity existed which necessitated transformation of the data to the logarithmic scale which gave better fitting regression lines. Two of the highest yielding entries possessed the greatest stability. The results showed that better data interpretation came from the log transformed data and that stability parameters should be considered in selection among high yielding cultivars.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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