Effect of Plant Density and Harvest Stage on Yield and Quality of Rheum tanguticum

NWIPB OpenIR

	Effect of Plant Density and Harvest Stage on Yield and Quality of Rheum tanguticum
	Xiong, Feng; Nie, Xiuqing; Zhao, Xiaohui; Yang, Lucun; Zhou, Guoying
	2018
发表期刊	INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY
卷号	20 期号:11
摘要	Rheum tanguticum is a widely used and spread medical plant on the Qinghai-Tibet plateau. However, over exploitation of R. tanguticum has made the storage of it sharply decreased. While, only few studies concentrated on cultivation of this medical plant. The primary purpose of this study is to explore the effects of plant density and harvest stage on quality and yield of R. tanguticum. Five density treatments (D1: 50 cmx10 cm, D2: 50 cmx20 cm, D3: 50 cmx30 cm, D4: 50 cmx40 cm, and D5: 50 cmx50 cm) and three harvest stages (green stage in early May, growing stage in middle July and wilting stage in early October) were chosen for this study from 2014 to 2016. Our results showed that: i) total biomass of dry plant decreased with plant density. Total dry biomass was the highest at growth stage and the lowest at green stage each year. Harvest index decreased with plant density in 2015 but slightly increased in 2016. Harvest index was the highest at wilting stage. ii) Yield per hectare increased significantly with plant density, and also with growth year and growth stage. iii) Growth year and stages either than plant density affected quality of R. tanguticum. iv) Yield of total anthraqunones have similar response to density treatments and harvest stages with biomass yield. In general, the best plant density for high yield of both biomass and total anthraqunones content was D1, but the best density for better appearance should be D4. Considered both quality and the economic production, wilting stage was suggested as the harvest season. (C) 2018 Friends Science Publishers
关键词	R. tanguticum Plant density Yield Quality Total anthraqunones
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/60026
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Xiong, Feng,Nie, Xiuqing,Zhao, Xiaohui,et al. Effect of Plant Density and Harvest Stage on Yield and Quality of Rheum tanguticum[J]. INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY,2018,20(11).
APA	Xiong, Feng,Nie, Xiuqing,Zhao, Xiaohui,Yang, Lucun,&Zhou, Guoying.(2018).Effect of Plant Density and Harvest Stage on Yield and Quality of Rheum tanguticum.INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY,20(11).
MLA	Xiong, Feng,et al."Effect of Plant Density and Harvest Stage on Yield and Quality of Rheum tanguticum".INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY 20.11(2018).