Genetic diversity for resistance to larger grain borer in maize hybrids and open pollinated varieties in Kenya.

This study was conducted to identify suitable parental genotypes for breeding for resistance to bruchid and to identify the farmers’ preferred traits in common bean. For this study, 144 diverse common bean genotypes were planted in an alpha lattice design, with 3 replications at 3 locations. Participatory variety selection was done using 20 farmers at each location. Farmers identified a number of criteria for selecting suitable varieties. Yield and yield-related traits were ranked as the most important selection criteria by all farmers at all locations. However, women ranked culinary traits as the top criteria, while men were more interested in marketable traits. From the 144 genotypes, farmers selected the 10 best genotypes in all the locations. The majority of the genotypes selected at Melkassa and Alemetena were small white-seeded released varieties and breeding lines. However, all the genotypes selected at Arsi Negele were predominantly landraces of small red-seeded beans. Traits such as earliness and resistance to storage insect were important in Melkassa and Alme tena but received less attention in Arsi Negele. The integration of the farmers’ selection preferences with the breeders’ criteria can improve the efficiency of plant breeding by developing crop varieties that better fit the specific needs of the farmers.

Plant Breeding

10.21475/ajcs.20.14.07.p1924

Cite

Citations (4)

First report on occurrence of the larger grain borer Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae) in Senegal

African Entomology (2008)

Momar Talla Guèye Georg Goergen Djibril Badiane K. Hell Leo Yendouban Lamboni

In Africa the larger grain borer, Prostephanus truncatus (Horn) (Coleoptera : Bostrichidae) (Fig. 1) is a serious pest of stored commodities mainly of stored maize, dried cassava roots and to a lesser extent yam chips. This bostrichid pest of meso-American origin was accidentally introduced into Africa some 30 years ago and started to spread over the continent from two geographically disparate points. The first recognized outbreaks of P. truncatus were reported in the late 1970s from East Africa, in the Tabora, Shinyanga and Mwanza regions of western Tanzania. Subsequently P. truncatus was found to be established in Togo, West Africa, in 1984 (Farrell & Schulten 2002). From there the pest gradually spread in the neighboring countries of Benin, Burkina Faso, Niger, Nigeria, reaching Guinea Conakry in 1988 and Guinea Bissau in 1998 (Aman et al. 2007).

Bostrichidae

10.4001/1021-3589-16.2.309

Cite

Citations (36)

Two essays on maize intra-crop diversity and use of improved varieties

Brian Chiputwa

Source

Cite

Citations (1)

Genetic studies and recurrent selection for nematode resistance in maize

Frank Kagoda

Genomic Selection