Multiple Statistics Analysis of Salt Stress Evaluation on Asparagus varieties with Artificial Sea Water
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    Abstract:

    25% of artificial sea water was applied to stress total of 25 asparagus varieties at the germination and seedling stage. The salt tolerance of asparagus varieties was evaluated comprehensively by means of multiple statistics analysis based on the salt resistant index of 10 agronomic characters including trend of germination, germination index, vigor index, radicle length, plant height, stem number, stem diameter, fresh mass of root, dry mass of root and root volume. The result showed that 10 agronomic characters differentiated greatly in different varieties, and they could be characterized into three main factors by factor analysis,namely seed vigor factor, root factor and growth factor with the accumulative contribution rate of 82.2%.Cluster analysis based on the score vectors of the factors showed that the 25 varieties could be classified into four categories, including 6 of the best salt tolerant varieties, 4 of the stronger salt tolerant varieties, 7 of the moderately salt sensitive varieties and 8 of the salt sensitive varieties. Consequently, a comprehensive evaluation method of salt stress on asparagus varieties with artificial sea water was established in this study, which could offer theory references for salt tolerance identification and breeding on asparagus.

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History
  • Received:June 27,2014
  • Revised:July 23,2014
  • Adopted:February 03,2015
  • Online: February 03,2015
  • Published:
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