AGRONOMIC PERFORMANCE AND PHENOTYPIC STABILITY OF GRAIN SORGHUM HYBRIDS

Abstract

The sorghum is a crop that has shown significant increase in productivity and cultivated area in Brazil, because this is the importance of cultivars with stable yield. The study aimed to evaluate the yield and the interaction of genotype by environment (GE) of 25 grain sorghum hybrids in different environments. For this study were conducted seven experiments: one in Acreúna-GO, one in Itumbiara-GO, three with different saturation levels for aluminum in Sete Lagoas-MG, one in Vilhena-RO, and one in Teresina-PI. The experiments were in a randomized block design with three replications. The genotypes were: 0307401, 0090061, 0307363, 0307343, 0090035, 0307509, 0307421, 0307511, 0307541, 0577393, 0144015, 0307167, 0144013, 0307689, 9920045, 0307561, 0307671, 0577337, 0441347, 0577335, made by sorghum breeding program of the Embrapa Maize and Sorghum, and the commercial cultivars 1G220, Dow 822, BRS 308, BRS 310, and 1G150. The statistical analysis was performed by variance analysis and F test. Was used the grouping of the average proposed by Scott and Knott (1974), and phenotypic stability was measured by analysis of Annicchiarico (1992). The yield was dependent on the environment. The hybrids, 0307689, 0307671, 1G220 0307343, 1G150, 0307363, BRS 308, 0009061, 9920045, BRS 310, 0307541, 0441347, 0144015, 0307421 and 0307401, were prominence because to obtain grain yield were bigger than overall average (4.10 t ha-1) and showed reater phenotypic stability when considered all environments.

Keywords

• Sorghum bicolor
• income
• GE interaction
• genetic breeding