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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (20): 7-13.doi: 10.11924/j.issn.1000-6850.casb20190500147

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Saccharum spp. × Erianthus fulvus and Their Hybrid Offspring: Identification of Drought Resistance

Shen Xianyue1, Xu Rong1, Wu Qinglian1, Xie Linyan1, Meng Yu1, Di Yining1, Wang Xianhong1,2, He Lilian1,2(), Li Fusheng1,2()   

  1. 1College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201
    2Sugarcane Research Institute, Yunnan Agricultural University, Kunming 650201
  • Received:2019-05-15 Revised:2019-07-30 Online:2020-07-15 Published:2020-07-20
  • Contact: He Lilian,Li Fusheng E-mail:helilian905@sohu.com;Lfs810@sina.com

Abstract:

The purpose of this study is to screen out excellent drought-resistant breeding materials, and to provide a basis for drought-resistant breeding and drought-resistant cultivation techniques of sugarcane. A total of 12 materials of Saccharum spp × Erianthus fulvus and their hybrid offspring were treated with pot drought treatment at seedling stage. Eight physiological and biochemical indexes related to drought resistance were tested. The drought resistance of the tested materials was evaluated comprehensively by pole-sorting method. The results showed that the indexes of Pro, MDA, SS and PMP of the 12 tested materials had an upward trend, the indexes of SP, Chl and SOD had a downward trend, while the CAT activity increased or decreased under drought stress. The results of pole-sorting method analysis showed that the drought resistance of the 12 tested materials was as follows: ‘ZM99-2’> ‘ZM99-1’> ‘ZM99-4’> ‘ZMI91-8’> ‘ZM99-3’> ‘ZM90-29’> ‘DZ01-58’> ‘DZ04-14’>‘DZ02-39’>‘ZMII91-2’>‘ROC10’>‘YC89-9’. It indicated that the high quality drought resistance traits of Erianthus fulvus could be transmitted to offspring by gene penetration. ‘ZM99-2’ showed positive physiological response in osmotic adjustment and other aspects at seedling stage under drought stress.

Key words: sugarcane, Erianthus fulvus, physiological indexes, drought stress, pole-sorting method

CLC Number: