Publications by authors named "Melis Rob"

Bruchids are a major storage pest of common bean. Genetic resistance is a suitable method to avoid grain losses during storage. The objective of the study was to introgress the arcelin-based resistance locus into selected advanced breeding line and to validate the molecular marker BRU_00261.

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The bean fly (Ophiomyia spp) is a key insect pest causing significant crop damage and yield loss in common bean (Phaseolus vulgaris L., 2n = 2x = 22). Development and deployment of agronomic superior and bean fly resistant common bean varieties aredependent on genetic variation and the identification of genes and genomic regions controlling economic traits.

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Knowledge of genetic diversity in plant germplasm and the relationship between genetic factors and phenotypic expression is vital for crop improvement. This study's objectives were to understand the extent of genetic diversity and population structure in 60 common bean genotypes from East and Southern Africa. The common bean genotypes exhibited significant (p<0.

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Understanding the genetic diversity present amongst crop genotypes is an efficient utilization of germplasm for genetic improvement. The present study was aimed at evaluating genetic diversity and population structure of 48 pigeonpea genotypes from four populations collected from diverse sources. The 48 pigeonpea entries were genotyped using 33 simple sequence repeat (SSR) markers that are polymorphic to assess molecular genetic diversity and genetic relatedness.

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Bacterial brown spot (BBS) disease caused by pv. is an important disease of dry bean ( L.), with grain yield losses of 55% reported in South Africa.

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Article Synopsis
  • The study investigates gene action in cassava to help breeders select better plant varieties, focusing on traits like β-carotene levels.
  • The F clones showed significant variations in traits among different families and offspring, with the most promising progenies showing much higher β-carotene content compared to the best parent.
  • Results indicated the importance of both additive and non-additive gene actions in controlling traits, with specific combinations of parents demonstrating notable positive heterosis for desirable traits like resistance to diseases and nutritional content.
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Background: The early generation selection of cassava quantitative and qualitative traits saves breeding resources as it can shorten breeding schemes. Inheritance analysis provides important breeding information for developing new improved varieties. This study aimed at developing an F1 segregating cassava population and determining mode of gene action of pulp colour and selected traits at early generation selection (F1 seedling and clones).

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