African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Response of transgenic rice at germination traits under salt and alkali stress

Xiang-Xiong Deng1,2, Xiao-Qin Zhang1, Xiu-Juan Song1,2, Kai-Kai Lai1,2, Long-Biao Guo2, Yue-Yong Xin1, Hui-Zhong Wang1 and Da-Wei Xue1*
1College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China. 2State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China.
Email: [email protected]

  •  Accepted: 13 July 2011
  •  Published: 12 September 2011

Abstract

Rice is a worldwide cereal crop. Rice yield is severely threatened by saline and alkali stresses. A transgenic rice variety and its wild type (Nipponbare) were treated with four different levels of NaCl / Na2CO3 solutions to study the germination traits (germination percentage, root length, dry weight) of transgenic rice. Rice was found to be more sensitive to Na2CO3 than to NaCl solutions. Germination percentages declined with increasing sodium salts. When treated with 1.5% NaCl, only 40% of Nipponbare and 51% of transgenic rice could survive. The root length of Nipponbare was significantly more restricted than that of transgenic rice. Transgenic rice showed better performance at germination and early seedling growth compared to its wild type under salt and alkali stress.

 

Key words: Transgenic rice, saline stress, alkali stress, germination traits.