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. The tubers themselves, also called "yams", come in a variety of forms owing to …

Dioscorea polystachya or Chinese yam (simplified Chinese: 山药; traditional Chinese: 山藥), also called cinnamon-vine, [2] is a species of flowering plant in the yam family. It is sometimes called Chinese potato or by its Korean name ma .

The common symptoms are infected leaves show yellow and green patterns (called mosaics) between the veins or may show a narrow green strips bordering the veins (called vein banding). If the disease is severe the leaves become long, thin and strap shape (called shoe-string symptom) and whole plant become stunted.

2016年9月6日 · Here we give a general introduction to yams, including their origin and geographic distribution as well as different types of yams common in Africa and Asia, and outline their uses.

Whilst yam is one of the most important staple root and tuber crops worldwide, it is still classified as an orphan crop because it is highly underutilized and receives little investment or/and research attention toward crop improvement. Yam plays a significant role in food security, medicine and economy in the developing countries.

Viruses are a major constraint for yam production worldwide. They hamper the conservation, movement, and exchange of yam germplasm and are a threat to food security in tropical and subtropical areas of Africa and the Pacific where yam is a staple ...

Common Name: Chinese Yam, Cinnamon vine, Air potato. Scientific Name: Dioscorea oppositifolia L. Chinese yam is a deciduous perennial vine native to China. It is a member of the Dioscoreaceae or Yam family. The genus Dioscorea has economic value as a food plant and is used as a traditional Chinese medicine.

Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. (5 m). It invades open to shady areas in the Eastern United States. The leaves are alternate proximally but can become opposite as they advance up the vine.

I am not sure if the yam is cooked or not from your photo. It it is cooked, the lines (veins) are the result of steam escaping from the yam during the cooking process thus shrinking the part of the yam is inside the skin. If it is not cooked, the lines would be due to something in the soil such as roots during the growth of the yam.

2024年1月1日 · Yam, a multi-species tuber crop of the family Dioscoreaceae, is considered one of the most important staple food crops to about 400 million people in West Africa and provides a valuable source of dietary carbohydrate and income to growers (Bhattacharjee et al. 2011; Nweke 2016). World production is estimated at 73 million tons, with West Africa ...