Anatomical and histochemical features of the vegetative organs of Dioscorea polystachya (Dioscoreaceae)

  • Zhiguo Jiang Hubei Province Key Laboratory of Conservation Biology for Shennongjia Golden Monkey, Shennongjia National Park Administration, Muyu Town, Shennongjia Forestry Region, Hubei 442400, China
  • Huanhuan Xiong 1 Hubei Province Key Laboratory of Conservation Biology for Shennongjia Golden Monkey, Shennongjia National Park Administration, Muyu Town, Shennongjia Forestry Region, Hubei 442400, China
  • Youzhi Li 1 Hubei Province Key Laboratory of Conservation Biology for Shennongjia Golden Monkey, Shennongjia National Park Administration, Muyu Town, Shennongjia Forestry Region, Hubei 442400, China
  • Chongnan Zhao Hubei Province Key Laboratory of Conservation Biology for Shennongjia Golden Monkey, Shennongjia National Park Administration, Muyu Town, Shennongjia Forestry Region, Hubei 442400, China
  • Teng Li 2 Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education, and Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, Hubei 434025, China;
  • Mengdi Zhang Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education, and Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, Hubei
  • Xia Zhang Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education, and Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, Hubei
  • Xia Zhang Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education, and Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, Hubei
  • Chaodong Yang Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education, and Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, Hubei
  • Cunyu Zhou

Abstract

We investigated the anatomical and histochemical features of Dioscorea polystachya (Dioscoreaceae), an important food crop in China.
The primary structures of D. polystachya include vertical tubers, adventitious roots, twining aerial stems, and leaves with bulblets. The
vertical tubers have storage parenchyma with scattered vascular bundles, a cortical meristerm zone, and phellem. The cortical meristerm
zone acts as a cambium to thicken the tubers. The twining stems and petioles both have a sclerenchyma layer with vascular bundles,
while the blades have palisade tissues and spongy tissues covered by a cuticle. The roots have stele, an endodermis, and an exodermis.
The scattered vascular bundles and phellem in the vertical tubers, the sclerenchyma layers and cuticles in the stems and leaves, and the
endodermis and exodermis in the roots facilitated the adaptation of D. polystachya to terrestrial environments. The cortical meristerm zone
thickens the tubers, which improves cultivation techniques. These structural features help to clarify the complex taxonomy, evolutionary
history, and phylogenetic relationships of D. polystachya

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How to Cite
Jiang, Z., H. Xiong, Y. Li, C. Zhao, T. Li, M. Zhang, X. Zhang, X. Zhang, C. Yang, and C. Zhou. “Anatomical and Histochemical Features of the Vegetative Organs of Dioscorea Polystachya (Dioscoreaceae)”. Emirates Journal of Food and Agriculture, Vol. 34, no. 1, Mar. 2022, doi:https://doi.org/10.9755/ejfa.2022.v34.i1.2820. Accessed 30 June 2022.
Section
Short Communication