Marker Assisted Selection for Common Bean Diseases Improvements in Tanzania: Prospects and Future Needs

Tryphone, George Muhamba; Chilagane, Luseko Amos; DeograciousProtas,; Kusolwa, Paul; Nchimbi‐Msolla, Susan

doi:10.5772/52823

Cited by 8 publications

(3 citation statements)

References 76 publications

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“…An important intermediate step in this direction is to transfer desirable QTLs (genes) into active breeding populations using MAS-and to transfer multiple traits through gene pyramiding (Das et al 2017). Progress has been made in applying MAS toward improved resistance and it is described by Miklas et al (2006) and Tryphone et al (2013).…”

Section: Current and Prospective Methods In Cb Breedingmentioning

confidence: 99%

A review of breeding objectives, genomic resources, and marker-assisted methods in common bean (Phaseolus vulgaris L.)

Assefa¹,

et al. 2019

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Common bean (Phaseolus vulgaris L.), one of the most important grain legume crops for direct human consumption, faces many challenges as a crop. Domesticated from wild relatives that inhabit a relatively narrow ecological niche, common bean faces a wide range of biotic and abiotic constraints within its diverse agroecological settings. Biotic stresses impacting common bean include numerous bacterial, fungal, and viral diseases and various insect and nematode pests, and abiotic stresses include drought, heat, cold, and soil nutrient deficiencies or toxicities. Breeding is often local, focusing on improvements in responses to biotic and abiotic stresses that are particular challenges in certain locations and needing to respond to conditions such as day-length regimes. This review describes the major breeding objectives for common bean, followed by a description of major genetic and genomic resources, and an overview of current and prospective marker-assisted methods in common bean breeding. Improvements over traditional breeding methods in CB can result from the use of different approaches. Several important germplasm collections have been densely genotyped, and relatively inexpensive SNP genotyping platforms enable implementation of genomic selection and related markerassisted breeding approaches. Also important are sociological insights related to demand-led breeding, which considers local value chains, from farmers to traders to retailers and consumers.

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Section: Current and Prospective Methods In Cb Breedingmentioning

confidence: 99%

A review of breeding objectives, genomic resources, and marker-assisted methods in common bean (Phaseolus vulgaris L.)

Assefa¹,

et al. 2019

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“…Several improved cultivars, which are tolerant or moderately or completely resistant to BCMV or BCMNV have been released in Tanzania and include Canadian Wonder, Uyole 94, Uyole 96, Lyamungu 85, Jesca, Selian 97, Rojo, Mshindi, Selian 05, Selian 06 and Cheupe (Tryphone et al, 2013). Kusolwa et al (2016) also registered the red kidney bean germplasm line (AO-1012-29-3-3A) that has multiple virus and bean weevil (storage pest) resistances.…”

Section: Planting Of Resistant Materialsmentioning

confidence: 99%

“…There have also been reviews on different aspects of common bean production in the country (Hillocks et al, 2006;Tryphone et al, 2013) but none focused on common bean virus diseases, which can cause 100% yield loss (Worrall et al, 2015). Particularly, previous reviews have not focused on the common bean virus diseases concerning their areas of incidence, distribution and approaches for detecting their causal agents.…”

Section: Introductionmentioning

confidence: 99%

Viruses infecting common bean (Phaseolus vulgaris L.) in Tanzania: A review on molecular characterization, detection and disease management options

Mwaipopo¹,

Nchimbi‐Msolla²,

Njau³

et al. 2017

Afr. J. Agric. Res.

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Common bean (Phaseolus vulgaris L.) is a major legume crop, serving as a main source of dietary protein and calories and generating income for many Tanzanians. It is produced in nearly all agroecological zones of Tanzania. However, the average yields are low (<1000 kg/ha), which is attributed to many factors including virus diseases. The most important viruses of common bean in Tanzania are Bean common mosaic virus (BCMV) and Bean common mosaic necrosis virus (BCMNV) but other viruses have also been reported. There has never been a review of common bean virus diseases in the country, and the lack of collated information makes their management difficult. Therefore, this review focuses on (1) occurrence of different viruses of common bean in Tanzania, (2) molecular characterization of these viruses, (3) detection tools for common bean viruses in Tanzania and (4) available options for managing virus diseases in the country. Literature and nucleotide sequence database searches revealed that common bean diseases are inadequately studied and that their causal viruses have not been adequately characterized at the molecular level in Tanzania. Increased awareness on common bean virus diseases in Tanzania is expected to result into informed development of strategies for management of the same and thus increased production, which in turn has implication on nutrition and income.

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Marker-Assisted Breeding for Abiotic Stress Tolerance in Crop Plants

Wani

Choudhary

Kumar

et al. 2018

Biotechnologies of Crop Improvement, Volume 3

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Marker Assisted Selection for Common Bean Diseases Improvements in Tanzania: Prospects and Future Needs

Cited by 8 publications

References 76 publications

A review of breeding objectives, genomic resources, and marker-assisted methods in common bean (Phaseolus vulgaris L.)

A review of breeding objectives, genomic resources, and marker-assisted methods in common bean (Phaseolus vulgaris L.)

Viruses infecting common bean (Phaseolus vulgaris L.) in Tanzania: A review on molecular characterization, detection and disease management options

Marker-Assisted Breeding for Abiotic Stress Tolerance in Crop Plants

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