Okojie, Itohan Grace, Department of Anatomy, Igbinedion University, Okada, Edo State, Nigeria Okwuonu, Uche Christiana, Department of Anatomy, Igbinedion University, Okada, Edo State, Nigeria Olatomide, Oluwasegun Davis, Department of Anatomy, Igbinedion University, Okada, Edo State, Nigeria Oleg, Kytaev, Institute of Horticulture of NAAS of Ukraine, Sadova St. 23, 03027, Kyiv, Ukraine Omotoso, Dayo Rotimi, Department of Human Anatomy, Redeemer's University, Ede, Osun State, Nigeria Omotoso, Dayo Rotimi, Department of Human Anatomy, Redeemer’s University, Ede, Osun State, Nigeria Ordas, Jorge Anton D., College of Science, University of Santo Tomas, España, Manila 1015, Philippines Oriola, Ayodeji O., Department of Chemical and Physical Sciences, Walter Sisulu University, Nelson Mandela Drive, P/Bag X1, Mthatha 5117, South Africa Oriola, Ayodeji O., Department of Chemical and Physical Sciences, Walter University, Mthatha, South Africa Oriola, Ayodeji O., Department of Chemical and Physical Sciences, Walter Sisulu University, Mthatha, South Africa Othman, Yahia A., Department of Horticulture and Crop Science, University of Jordan, Amman-11942, Jordan Owusu, G K, School of Nuclear and Allied Sciences, University of Ghana, P. O. Box LG 80, Legon, Accra, Ghana. Oyedeji, Adebola O., Department of Chemical and Physical Sciences, Walter Sisulu University, Nelson Mandela Drive, P/Bag X1, Mthatha 5117, South Africa, African Medicinal Flora and Fauna Research Niche Area, Walter Sisulu University Nelson Mandela Drive, P/Bag X1, Mthatha 5117, South Africa Oyedeji, Adebola O., African Medicinal Flora and Fauna Research Niche, Walter Sisulu University, Mthatha, South Africa, Department of Chemical and Physical Sciences, Walter Sisulu University, Mthatha, South Africa Oyedeji, Adebola O., Department of Chemical and Physical Sciences, Walter University, Mthatha, South Africa, African Medicinal Flora and Fauna Research Niche, Walter Sisulu University, Mthatha, South Africa Oyoo, Judith, Department of Outreach and Partnerships, Potato Research Centre, Horticulture Research Institute, Kenya Agricultural & Livestock Research Organization (KALRO), Limuru, Kenya Oyunbileg, Yu., Laboratory of Plant biotechnology, Institute of Biology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia Oyundari, G, Laboratory of Plant Biotechnology, Institute of General and Experimental Biology, Mongolian Academy of Science, Ulaanbaatar, Mongolia