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The poster paper of the AfricaYam project on “yam anthracnose phenotyping” presented by Dr. Kolade Olufisayo, who works as PDF in the AfricaYam project in the Virology & Molecular Diagnostics Unit, IITA-Ibadan, was adjudged the best poster of the 18th Triennial Symposium of the International Society for Tuber and Root Crops (ISTRC) held from 22 to 25 Oct 2018 at Cali, Colombia. The poster titled “High-Throughput Yam Anthracnose Phenotyping using Detached Leaf Assay and Digital Imaging” presented a new phenotyping method established for assessing yam (Dioscorea spp.) germplasm and breeding lines for yam anthracnose disease (YAD) caused by Colletotrichum gloeosporioides resistance. “This work funded by the AfricaYam allows assessment of the performance of yam genotype against YAD under 3 weeks and up to 100 genotypes can be assessed in a week and simultaneously gather data on host-pathogen interaction” said Dr. Kolade who led the development of this procedure.

Dr. Kolade in the field with the ‘Leaf Doctor’ App


Also, Molecular Geneticist at IITA-Ibadan, Dr. Ranjana Bhattacharjee, who adopted DLA for evaluating the breeding populations of D. alata (water yam) as part of the NSF-BREAD funded project said that “The best aspect of the ‘DLA-Leaf Doctor’ phenotyping is that a same genotype can be evaluated for multiple traits and it offers precise phenotyping data necessary for genotyping, identification of QTLs and markers”.


Dr. Lava Kumar (Head of Virology and Germplasm Health, IITA) congratulated Kolade for this success and added that ‘DLA-Leaf Doctor’ innovation facilitated the much needed high-throughput phenotyping pipeline necessary to accelerate breeding for YAD resistance in water yam.

Also, Dr. Patrick Adebola, AfricaYam project Leader, lauded Kolade for the achievement and added that AfriaYam project is paving development of new innovations on biotic stress phenotyping to fast track development of molecular breeding tools and yam breeding in West Africa.


For more information, contact: Lava Kumar (; Odok, Dajie Blessing (


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