Adaptability and Phenotypic Stability of Resistance to Two Viral Diseases and Yield Traits in Cassava  

作　　者：Bernadetta Kimata Emily Masinde Festo Masisila Rahim Menya Dwasi Matondo Midatharahally N. Maruthi Geoffrey Mkamilo Bernadetta Kimata;Emily Masinde;Festo Masisila;Rahim Menya;Dwasi Matondo;Midatharahally N. Maruthi;Geoffrey Mkamilo(Tanzania Agricultural Research Institute (TARI)-Naliendele, Mtwara, Tanzania;Department of Crops Horticulture and Soils, Egerton University, Njoro, Kenya;Natural Resources Institute, University of Greenwich, London, UK;Tanzania Agricultural Research Institute (TARI)-Makutupora, Dodoma, Tanzania)

机构地区：[1]Tanzania Agricultural Research Institute (TARI)-Naliendele, Mtwara, Tanzania [2]Department of Crops Horticulture and Soils, Egerton University, Njoro, Kenya [3]Natural Resources Institute, University of Greenwich, London, UK [4]Tanzania Agricultural Research Institute (TARI)-Makutupora, Dodoma, Tanzania

出　　处：《American Journal of Plant Sciences》2021年第4期679-705,共27页美国植物学期刊（英文）

摘　　要：Cassava productivity is hampered by pests and diseases including cassava<span style="font-family:;" "=""><span style="font-family:Verdana;"> mosaic disease (CMD) and cassava brown streak disease (CBSD).</span><b> </b><span style="font-family:Verdana;">The main ob</span><span style="font-family:Verdana;">jective of this study was to identify stable superior genotypes that combine</span><span style="font-family:Verdana;"> dis</span><span style="font-family:Verdana;">ease resistance and high yield. Sixteen cassava genotypes were planted in a</span> <span style="font-family:Verdana;">randomized complete block design with three replications for six planting </span><span style="font-family:Verdana;">seasons (years) at five sites in Tanzania. The genotypes were assessed using the additive main effect and multiplicative interaction (AMMI) analysis, and highly significant (</span></span><span style="font-family:Verdana;">P </span><span style="font-family:Verdana;">< 0.001) effects of genotype, environment, and genotype-</span><span style="font-family:;" "=""><span style="font-family:Verdana;">by-environment (</span><i><span style="font-family:Verdana;">G</span>^{<span style="font-family:Verdana;">*</span>}<span style="font-family:Verdana;">E</span></i><span style="font-family:Verdana;">) interactions were observed for all traits studied. Per</span><span style="font-family:Verdana;">cent sum of squares (SS) due to environment (12.66% - 85.23%) was the</span><span style="font-family:Verdana;"> highest followed by </span><i><span style="font-family:Verdana;">G</span>^{<span style="font-family:Verdana;">*</span>}<span style="font-family:Verdana;">E</span></i><span style="font-family:Verdana;"> (14.12% - 39.56%) for CMD foliar symptoms, root weight and dry matter. On the other hand, % SS due to genotype (52.14% - 69.14%) </span><span><span style="font-family:Verdana;">was highest followed by </span><i><span style="font-family:Verdana;">G</span>^{<span style="font-family:Verdana;">*</span>}<span style="fCassava productivity is hampered by pests and diseases including cassava<span style="font-family:;" "=""><span style="font-family:Verdana;"> mosaic disease (CMD) and cassava brown streak disease (CBSD).</span><b> </b><span style="font-family:Verdana;">The main ob</span><span style="font-family:Verdana;">jective of this study was to identify stable superior genotypes that combine</span><span style="font-family:Verdana;"> dis</span><span style="font-family:Verdana;">ease resistance and high yield. Sixteen cassava genotypes were planted in a</span> <span style="font-family:Verdana;">randomized complete block design with three replications for six planting </span><span style="font-family:Verdana;">seasons (years) at five sites in Tanzania. The genotypes were assessed using the additive main effect and multiplicative interaction (AMMI) analysis, and highly significant (</span></span><span style="font-family:Verdana;">P </span><span style="font-family:Verdana;">< 0.001) effects of genotype, environment, and genotype-</span><span style="font-family:;" "=""><span style="font-family:Verdana;">by-environment (</span><i><span style="font-family:Verdana;">G</span>^{<span style="font-family:Verdana;">*</span>}<span style="font-family:Verdana;">E</span></i><span style="font-family:Verdana;">) interactions were observed for all traits studied. Per</span><span style="font-family:Verdana;">cent sum of squares (SS) due to environment (12.66% - 85.23%) was the</span><span style="font-family:Verdana;"> highest followed by </span><i><span style="font-family:Verdana;">G</span>^{<span style="font-family:Verdana;">*</span>}<span style="font-family:Verdana;">E</span></i><span style="font-family:Verdana;"> (14.12% - 39.56%) for CMD foliar symptoms, root weight and dry matter. On the other hand, % SS due to genotype (52.14% - 69.14%) </span><span><span style="font-family:Verdana;">was highest followed by </span><i><span style="font-family:Verdana;">G</span>^{<span style="font-family:Verdana;">*</span>}<span style="f

关 键 词：Cassava Brown Streak Disease Cassava Mosaic Disease Disease Resistance Genotype*Environment Interaction High Yield 

分 类 号：S53[农业科学—作物学]