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A large proportion of the world’s yams, which are mostly indigenous to Africa, and the exotic taro and cocoyam are grown in West and Central Africa by resource-poor farmers. Surveys demonstrate recycling and build-up of pathogens and nematodes from one generation to the next because of their vegetative mode of propagation. Minisett techniques, organ culture, vine cuttings and so on, and the use of botanic seeds can alleviate these problems. The main pests are two types of nematodes, among which root-knot nematodes have increased recently, yam beetles, fungi and viruses, but many fungal pathosystems remain unexplored. Marker-assisted resistance breeding, particularly against yam mosaic virus, is using next-generation sequencing techniques and robust phenotypic screening. Virus-free material can be obtained by hot water treatment of seed tubers. There is a huge prospect of using genomics and transgenic approaches to accelerate the rate of improvement without affecting production and productivity.
Price: £25.00
Publisher: Burleigh Dodds Science Publishing
Imprint: Burleigh Dodds Science Publishing
Series: Burleigh Dodds Series in Agricultural Science
Publication Date:
07 February 2019
ISBN: 9781838797560
Format: eBook
BISACs:
1 Introduction 2 Major threats to yam, taro and cocoyam and management options 3 Status of pest and disease control measures 4 Conclusion and future trends 5 References