Exploring the value of Dioscorea melanophyma: an orphan crop from China

doi:10.1016/j.indcrop.2024.120136

KIB OpenIR

	Exploring the value of Dioscorea melanophyma: an orphan crop from China
	Chen, Zhi; Xu, Yulin; Ge, Jia; Chen, Gao
	2025
发表期刊	INDUSTRIAL CROPS AND PRODUCTS
ISSN	0926-6690
卷号	223 页码:120136
摘要	Dioscorea melanophyma is a wild relative of cultivated yam, and its development and utilization are strategically important for food security. This study aims to investigate the germplasm resources, ethnobotany, pests, and diseases of D. melanophyma, and to examine the impact of climate change on its distribution and survival. The study also assesses the nutritional value of the tubers and bulbils, and investigates the pattern of bulbil germination and associated changes in endogenous hormone levels. The survey finds that D. melanophyma is mainly distributed in southwest China, and its tubers and bulbils are recorded as edible. The major diseases of this species are white rust and anthracnose, and the pests are the species Lilioceris sinica, and the families of Arctiidae, Agromyzidae, and Elateridae. Temperature annual range (Bio7), elevation and min temperature of coldest month (Bio6) were found to significantly influence the distribution of D. melanophyma, with cumulative contribution and ranked importance of the MaxEnt model reaching 87.3 % and 89.5 %, respectively. In the future, the area of highly suitable habitats for D. melanophyma will decrease dramatically, while moderately and lowly suitable are will increase. The tubers and bulbils of D. melanophyma are rich in nutrients and have a higher nutritional value score than those of D. polystachya. Dioscorea melanophyma reproduces asexually, primarily through the numerous bulbils it produces. Early in the year (before March), high concentrations of abscisic acid in the bulbils inhibit germination through physiological dormancy. From April on, many bulbils begin to germinate, achieving a germination rate of 90 % within one month. In conclusion, D. melanophyma exhibits significant developmental potential, and is likely to serve as a crucial genetic resource for yam cultivation and play a vital role in food security. This comprehensive study on D. melanophyma aims to offer valuable information and insights to consumers, producers, and researchers alike.
DOI	10.1016/j.indcrop.2024.120136
WOS记录号	WOS:001370523800001
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/76202
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Chen, Zhi,Xu, Yulin,Ge, Jia,et al. Exploring the value of Dioscorea melanophyma: an orphan crop from China[J]. INDUSTRIAL CROPS AND PRODUCTS,2025,223:120136.
APA	Chen, Zhi,Xu, Yulin,Ge, Jia,&Chen, Gao.(2025).Exploring the value of Dioscorea melanophyma: an orphan crop from China.INDUSTRIAL CROPS AND PRODUCTS,223,120136.
MLA	Chen, Zhi,et al."Exploring the value of Dioscorea melanophyma: an orphan crop from China".INDUSTRIAL CROPS AND PRODUCTS 223(2025):120136.

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