Biodiversity conservation of the neglected and underutilized Nigerian horticultural crops

Abstract

Abstract Biodiversity is fundamental for ecosystem functioning, sustainable crop production, soil health, and attainment of food and nutrition security. Loss of biodiversity in Africa and across the globe, and its negative impacts on food security, climate, and health must be curbed. African indigenous and underutilized crops are not likely to cause diet-related diseases. In addition, some of them cannot be adversely affected by climate change, and they also require minimum agronomic input to yield optimally. Besides supplying appropriate proportions of essential minerals, underutilized horticultural crops can also reduce hunger and alleviate poverty. While abiotic stresses like low/high temperature, drought, light intensity, and sub-optimal relative humidity will have negative impacts on exotic plants growth and development, indigenous crops are seldom affected. It is of great importance that the neglected and underutilized plant species (NUS) also serve a dual purpose as food for man as well as animal feed. Despite these crucial roles that the NUS play, some are still threatened with neglect and potentials not maximized. This paper discusses strategies that can be adopted to conserve NUS for their optimum utilization, with the Nigerian rain forest species as prototypes. Deliberate identification and cultivation of the NUS, establishment of gene and field banks, recognition and promotion of the NUS through national and special research and development programmes, use of media, including social, extension agents and agencies, linking the NUS to relevant industries including food, feed, and pharmaceuticals, and biodiversity conservation through diversified farming systems etc. are major key strategies for Climate-smart and sustainable agriculture.