Natural hybridization on pigeonpea grown in the Brazilian semi-arid

Abstract

The extension of natural hybridization on pigeon pea was evaluated on individual plants and on plants in a row, using two different genotypes and two planting times at Petrolina, State of Pernambuco, Brazil. The color of the stem was used as a genetic marker due to the simple inheritance and the complete dominance of the purple color over the green color. The natural hybridization was higher in the second harvest than in the first one and also higher on individual plants than on plants in a row. Significant differences were not found in the natural hybridization between the two genotypes and also between the two planting times. The natural hybridization rate varied from 2.50% to 13.36% for individual plants and from 0.86% to 2.24% for plants in a row.