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Acta Prataculturae Sinica ›› 2012, Vol. 21 ›› Issue (2): 241-248.

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Drought resistance evaluation of four seedling chicory

LIU Jian-ning1, SHI Yong-hong1, HOU Zhi-hong1, WANG Yun-qi1, LI peng2, XING Ya-liang2, WU Xin-ming1, ZHANG Yan1   

  1. 1.Animal Husbandry and Veterinary Institute, Shanxi Academy of Agricultural Sciences, Taiyuan 030032, China;
    2.Agriculture Department of Shanxi Province, Taiyuan 030001, China
  • Received:2011-01-13 Online:2012-02-25 Published:2012-04-20

Abstract: The effects of drought stresses on eleven drought-resistant characteristics of four seedling chicory were studied by reducing soil water in a pot experiment. The leaf water content (LWC), leaf relative water content (LRWC), height and biomass of the four seedling chicory decreased, while their leaf soluble sugar content (LSSC), leaf relative electrical conductivity (LREC), proline and root/shoot increased with improved drought stress resistance. Drought stress did not significantly affect height stress index or dry matter stress index of four seedling chicory. It is concluded that LWC, LRWC, height, root-shoot ratio, LREC and LSSC can be used as the main evaluation index, while aboveground biomass, underground biomass, plant height stress index, dry matter stress index and proline can only be used as reference indexes for drought resistance evaluation of chicory. The capacity of drought resistance by subordinate function analysis of the four chicories was gauged as: C2>C1>C4>C3. This accorded with their practical performance.

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