Abstract
Knowledge on the inheritance of lodging-resistance is of great value for the development of new wheat varieties (Triticum aestivum L.). Crosses among four different bread wheat genotypes were evaluated in the field. The analysis was based on three fixed (P 1, P2 and F1) and three segregant (F 2, BC1F1 and BC2F1) generations. Means and variances were computed for each generation in all crosses and the gene effects estimated. The lodging-resistance factor method (cLr) was measured. Partial or complete dominance of the lodging-susceptible over the lodging-resistant parent in each cross was evident. Results showed a large genetic variability among the genotypes.
Highlights
Lodging caused by severe storms, high soil fertility or delayed harvest frequently leads to serious losses of small grain
The incidence of lodging in wheat has decreased in southern Brazil due to the development of cultivars with improved lodging-resistance
In six different crosses among genotypes EMB40, TB429, TB951 and TB961 allowed a complete analysis of the trait lodging-resistance factor index (Table 1)
Summary
Lodging caused by severe storms, high soil fertility or delayed harvest frequently leads to serious losses of small grain. In six different crosses among genotypes EMB40, TB429, TB951 and TB961 allowed a complete analysis of the trait lodging-resistance factor index (cLr) (Table 1).
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