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JOURNAL OF DESERT RESEARCH ›› 2017, Vol. 37 ›› Issue (6): 1158-1170.DOI: 10.7522/j.issn.1000-694X.2016.00093

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Early Selection of Superior Families with High Drought-resistance in Nitraria tangutorum Based on the Physiological Indices

Chai Wenmin, Li Yi, Su Shiping, Shan Lishan, Chong Peifang   

  1. College of Forestey, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2016-05-11 Revised:2016-06-08 Online:2017-11-20 Published:2017-11-20

Abstract: In order to select superior family for drought resistance of Nitraria tangutorum ultra-xeromoph shrubs. Provenance experiment on 31 families of 3 years-old N. tangutorum that strong growth, disease and pest resistance was carried out to investigate the contents of peroxidase (POD), superoxide dismutase (SOD), soluble protein (SP), soluble sugar (SS), proline (Pro) and chlorophyll (Chl) in Wuwei and Lanzhou city of Gansu province, principal component analysis and subordinate function method were both used in this study. Results indicated that peroxidase, superoxide dismutase, soluble protein, soluble sugar, proline and chlorophyll a, chlorophyll b, chlorophyll (a+b) and chlorophyll a/b values of N.tangutorum families varied in a large range among the 31 families, chlorophyll a content varied most, while the smallest was in soluble protein content. Superior families of N.tangutorum were selected by single index which was not identical. Adopting synthesis evaluation method selected the superior family for drought resistance, were j3-8, j3-6, jc-8, w3-12, j3-9 respectively, and Sha Jin zi w3-12 and w3-15 family in Minqin performed best in drought resistance.

Key words: Nitraria tangutorum, early selection, superior family, principal component analysis, membership function method

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