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Acta Prataculturae Sinica ›› 2015, Vol. 24 ›› Issue (7): 52-59.DOI: 10.11686/cyxb2014324

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Selection of high photosynthetic efficiency Vigna angularis varieties and evaluation of their nutritional value

ZOU Chang-Ming1, WANG Yun-Qing2, *, CAO Wei-Dong3, ZHANG Xiao-Hong1, LIU Ying2, YANG Jie1, TANG Shan2   

  1. 1.Anhui Science and Technology University, Fengyang 233100, China;
    2.Institute of Soils and Fertilizers, Anhui Academy of Agricultural Sciences, Hefei 230031, China;
    3.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2014-07-21 Online:2015-07-20 Published:2015-07-20

Abstract: Field and pot experiments of 7 cultivated Vigna angularis varieties were established in 2011-2013 to evaluate their fertilizer requirement and identify cultivars suitable for Anhui province. The morphology of roots, stems, leaves, flowers, pods, seeds, and also the growth characteristics, yields, and efficiency of dry matter accumulation were surveyed. Photosynthetic efficiency of leaves, weight of root nodules, contents of plant nutrients such as N, P, K, Fe and Zn, were measured at full bloom stage, as were nutritional components crude protein, crude fat, crude fiber and amino acid in the plants. The early-maturing ‘black’ variety of V. angularis (EBVA) matured in the middle of the growing season in Anhui, while the late-maturing ‘black’ cultivar of V. angularis (LBVA) matured in late season. Other varieties matured at an early growth stage. The variety Xingan of the species Adenanthera microsperma (XAM) showed the highest leaf photosynthetic efficiency and dry matter accumulation. LBVA had the highest yield of fresh herbage and dry matter, and highest weight of root nodules, yield of seeds and protein yield LBVA also showed the greatest capacity for accumulation of N, K, Fe and Zn. However, EBVA and XAM had the greatest capacity for P accumulation. Fresh herbage of LBVA was the most palatabile to animals because of its lower crude fiber and higher water content. In conclusion, XAM, EBVA and LBVA were found to be suitable crops for the Anhui area based on photosynthetic efficiency, fresh herbage yield, dry matter yield, nutritional value, capacity for nutrient uptake, and maturity date.