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首页> 外文期刊>International Journal of Vegetable Science >Combining Ability and Genetic Control of Pod Yield and Component Traits in Dolichos Bean
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Combining Ability and Genetic Control of Pod Yield and Component Traits in Dolichos Bean

机译：多金属豆荚产量和组分特征的组合能力和遗传控制

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摘要

The major limitation of dolichos bean {Dolichos lablab L.) improvement is the narrow genetic base for useful traits present in available germplasm that may be overcome through interspecific hybridization. Five diverse genotypes involving two each of indeterminate and semi-indeterminate, and one determinate type, were crossed in a 5 x 5 half diallel mating design to estimate combining ability, mode of gene action, and extent of heterosis for 12 quantitative traits. The preponderance of additive genetic effects was evident for pod weight and number of pods/inflorescence; additive and non-additive gene effects for number of pods/plant, and non-additive gene action in expression of days to 50% flowering, raceme length, number nodes/inflorescence, numberinflorescences/plant, number flower buds/inflorescence, pod length, pod diameter, pod thickness, and pod yield/plant. The parents "BCDB 10" and "BCDB-2" were identified as potential donors for breeding. The crosses "BCDB-2xBCDB-15" and "BCDB-10xBCDB-5"exhibited high heterobeltiosis for pod yield/plant to the extent of 114.26 and 86.63%, respectively. They could not be exploited at the commercial level. These crosses involved one parent having high general combining ability effects for pod yield and other important horticultural traits that could produce desirable transgressive segregants in subsequent generations.
机译：Dolichos Bean {Dolichos Lablab L.）改进的主要限制是用于可用种质中存在的有用性状的狭窄遗传碱基，其可以通过间隙杂交来克服。五种不同的基因型，涉及两种不确定和半不确定，一个测定的类型，在5×5.5个半同的角色配合设计中交叉，以估计组合能力，基因模式和12种定量性状的杂种的程度。添加剂遗传效应的优势对于POD重量和豆荚数/花序的数量是明显的;豆荚/植物数量的添加剂和非添加剂基因效应，以及表达日落至50％开花，恒星长度，数量节点/花序，Rupperinlescences /植物，数字花蕾/花序，荚长，荚直径，荚厚度和豆荚产量/植物。父母“BCDB 10”和“BCDB-2”被确定为育种供体。十字架“BCDB-2XBCDB-15”和“BCDB-10XBCDB-5”分别显示出豆荚产量/植物的高异质型，分别为114.26和86.63％。他们无法在商业层面被剥削。这些十字架涉及一个具有高通用组合能力效应的植物产量和其他重要园艺性状的一级父母，其可以在随后的几代中产生所需的近迁移分离。

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