title: Adaptability and Stability Study of Selected Sweet Sorghum Genotypes for Ethanol Production under Different Environments Using AMMI Analysis and GGE Biplots.
abstract: The genotype and environment interaction influences the selection criteria of sorghum (Sorghum bicolor) genotypes. Eight sweet sorghum genotypes were evaluated at five different locations in two growing seasons of 2014. The aim was to determine the interaction between genotype and environment on cane, juice, and ethanol yield and to identify best genotypes for bioethanol production in Kenya. The experiments were conducted in a randomized complete block design replicated three times. Sorghum canes were harvested at hard dough stage of grain development and passed through rollers to obtain juice that was then fermented to obtain ethanol. Cane, juice, and ethanol yield was analyzed using the additive main effect and multiplication interaction model (AMMI) and genotype plus genotype by environment (GGE) biplot. The combined analysis of variance of cane and juice yield of sorghum genotypes showed that sweet sorghum genotypes were significantly (P< 0.05) affected by environments (E), genotypes (G) and genotype by environment interaction (GEI). GGE biplot showed high yielding genotypes EUSS10, ACFC003/12, SS14, and EUSS11 for cane yield; EUSS10, EUSS11, and SS14 for juice yield; and EUSS10, SS04, SS14, and ACFC003/12 for ethanol yield. Genotype SS14 showed high general adaptability for cane, juice, and ethanol yield.
authors: Department of Biochemistry and Molecular Biology, Egerton University, P.O. Box 536-20115, Egerton, Kenya.
authors: Justice Kipkorir
authors: 0000-0002-5817-9942
authors: JK
authors: Rono
authors: Department of Crops, Horticulture and Soil, Egerton University, P.O. Box 536-20115, Egerton, Kenya.
authors: Erick Kimutai
authors: EK
authors: Cheruiyot
authors: Department of Biochemistry and Molecular Biology, Egerton University, P.O. Box 536-20115, Egerton, Kenya.
authors: Jacktone Odongo
authors: JO
authors: Othira
authors: Department of Crops, Horticulture and Soil, Egerton University, P.O. Box 536-20115, Egerton, Kenya.
authors: Virginia Wanjiku
authors: VW
authors: Njuguna
authors: Department of Crops, Horticulture and Soil, Egerton University, P.O. Box 536-20115, Egerton, Kenya.
authors: Joseph Kinyoro
authors: JK
authors: Macharia
authors: Department of Crops, Horticulture and Soil, Egerton University, P.O. Box 536-20115, Egerton, Kenya.
authors: James
authors: J
authors: Owuoche
authors: Department of Crops, Horticulture and Soil, Egerton University, P.O. Box 536-20115, Egerton, Kenya.
authors: Moses
authors: M
authors: Oyier
authors: Department of Crops, Horticulture and Soil, Egerton University, P.O. Box 536-20115, Egerton, Kenya.
authors: Alex Machio
authors: AM
authors: Kange
mesh_terms: D000383:Agriculture / Q000379:methods*; D004777:Environment; D000431:Ethanol / Q000737:chemistry*; D059647:Gene-Environment Interaction; D005838:Genotype; D045868:Sorghum / Q000737:chemistry / Q000235:genetics*
chemical_list: D000431:Ethanol