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Acta Prataculturae Sinica ›› 2015, Vol. 24 ›› Issue (11): 174-182.DOI: 10.11686/cyxb2014541

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Correlation analysis of the main agronomic traits and performance of 21 alfalfa varieties

FU Bing-Zhe1, GAO Xue-Qin2, GAO Yong-Fa1, LI Dong-Ning4, ZHANG Long4, ZHANG Rong3, *   

  1. 1.Grassland Science Institute, Agricultural College, Ningxia University, Yinchuan 750021, China; 2.Science and Technology Department, Ningxia University, Yinchuan 750021, China; 3.Institute of Plant Protection, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750001, China; 4.Ningxia Agricultural Reclamation Flourishing Grass Industry Company, Yinchuan 750023, China
  • Received:2014-12-26 Online:2015-11-20 Published:2015-11-20

Abstract: Relationships between the major agronomic traits and production performance of 21 alfalfa varieties have been studied using correlation and grey correlation degree analysis. The results showed that alfalfa hay yields were significantly correlated with growth rate, plant height and the fresh-dry ratio (P<0.01). The correlation coefficients were 0.87, 0.86 and 0.55 respectively. The grey correlation coefficients were 0.8360, 0.8330 and 0.7716 respectively. Hay yields were not significantly correlated with either plant number or branch number (P>0.05). The grey correlation coefficient was 0.5921, 0.6267 and 0.7406 respectively. The production performances of the 21 alfalfa varieties were evaluated using the method of optimal correlation degree. The production performance of Gannong No.5, Golden Queen, WL363HQ, WL319HQ and Sandeli were superior to the other varieties. The Aohan, Caoyuan No.3 and Gannong No.2 varieties were the poorest performers in the Ningxia irrigation area.