Heterosis in locally adapted sorghum genotypes and potential of hybrids for increased productivity in contrasting environments in Ethiopia

作     者：Taye T.Mindaye Emma S.Mace Ian D.Godwin David R.Jordan 

作者机构：The University of QueenslandQueenslandAlliance for Agriculture and Food InnovationHermitage Research Facility Ethiopian Institute of Agricultural ResearchMelkassa Research Center Department of Agriculture and FisheriesHermitage Research Facility The University of QueenslandSchool of Agriculture and Food Sciences 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2016年第4卷第6期

页      面：479-489页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 0902[农学-园艺学] 

基　　金：AusAID (Australian Agency for International Development) for a scholarship supporting TTM,Queensland Alliance for Agriculture and Food Innovation (QAAFI) the Ethiopian Institute of Agricultural Research (EIAR) for financially supporting the research activities 

主　　题：Farmers preferred traits High parent heterosis Locally adapted genotypes Sorghum hybrids 

摘      要：Increased productivity in sorghum has been achieved in the developed world using *** their yield advantage,introduced hybrids have not been adopted in Ethiopia due to the lack of adaptive traits,their short plant stature and small grain *** study was conducted to investigate hybrid performance and the magnitude of heterosis of locally adapted genotypes in addition to introduced hybrids in three contrasting environments in *** total,139 hybrids,derived from introduced seed parents crossed with locally adapted genotypes and introduced R lines,were ***,the hybrids matured earlier than the adapted parents,but had higher grain yield,plant height,grain number and grain weight in all *** lowland adapted hybrids displayed a mean better parent heterosis(BPH) of19%,equating to 1160 kg ha-1and a 29% mean increase in grain yield,in addition to increased plant height and grain weight,in comparison to the hybrids derived from the introduced R *** mean BPH for grain yield for the highland adapted hybrids was 16% in the highland and 52%in the intermediate environment equating to 698 kg ha-1and 2031 kg ha-1,respectively,in addition to increased grain *** magnitude of heterosis observed for each hybrid group was related to the genetic distance between the parental *** majority of hybrids also showed superiority over the standard check *** general,hybrids from locally adapted genotypes were superior in grain yield,plant height and grain weight compared to the high parents and introduced hybrids indicating the potential for hybrids to increase productivity while addressing farmers required traits.