Yam is the common name for some plant species in the genus Dioscorea (family Dioscoreaceae) that form edible tubers (some other species in the genus being toxic). Yams are perennial herbaceous vines native to Africa, Asia, and the Americas and cultivated for the consumption of their starchy tubers in many temperate and tropical regions.

2024年3月14日 · “Data Page: Yam production”, part of the following publication: Hannah Ritchie, Pablo Rosado and Max Roser (2023) - “Agricultural Production”. Data adapted from Food and Agriculture Organization of the United Nations. Retrieved from https://ourworldindata.org/grapher/yams-production [online resource]

Yams (Dioscorea spp.) are flowering plants of the Dioscoreaceae family. It includes more than 600 species of woody shrubs and climbing vines. They are underground tubers with heart-shaped leaves, tiny green or white blooms, and berry–shaped fruit. Yams are extensively spread throughout the tropical and warm temperate parts of the planet.

2003年8月28日 · Most of the world production of yam is from Africa (about 96%) with Nigeria alone accounting for nearly 75% of the total world production (Tables 1 and 2). World annual production was estimated to be 25 million Mt in 1974, and 24 million Mt in 1992.

2022年8月19日 · The study was thus designed to investigate how yam is produced, the human and environmental health effects of how yam is produced, and food quality effects of how yam is produced.

2025年1月23日 · Yam is the name given to several plant species in the genus Dioscorea that produce starchy edible tubers. They are cultivated in many temperate and tropical regions, such as West Africa, South America, the Caribbean, Asia, and Oceania.

Yam is the name given to several plant species in the genus Dioscorea including Dioscorea alata (white yam), Dioscorea bulbifera (potato yam), Dioscorea cayenensis (yellow yam), Dioscorea esculenta (Asiatic yam) and Dioscorea batatas (Chinese yam) …

2022年8月19日 · Several varieties of yam are produced throughout Ghana. These include Pona (white yam), Dente, Asana, and Serwa. In recent years, Ghana’s Crop Research Institute (CRI) introduced new high yield varieties, such as the Mankrong and Kukrupa.

2022年9月13日 · Mostly the Yam is fried, roasted or baked before consumption. The genus of Yam is a perennial climber having tuberous roots. The plant stem grows in a spiral way. The tuber and bulblets are produced from the plant; these arise from the leaf axils.

2024年1月1日 · Nigeria, Ghana, and Ivory Coast together produce about 86% of the world’s yam supply. Ghana’s production output is approximately 12 per cent of global output. This production figure is projected to increase by the close of 2021, due …