African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6688

Full Length Research Paper

Effect of planting pattern and drought stress on amylase content in rice grain

Rahim Naseri1*, Ali Hatami2, Amir Mirzaee3 and Reza Soleimani4*
  1Young Researchers Club, Islamic Azad University, Ilam Branch, Ilam, Iran. 2Faculity of Agriculture, Ilam University, Ilam, Iran. 3Department of Agronomy, Faculty of Agriculture and Natural Resourses, Islamic Azad University, Karaj Branch, Karaj, Iran. 4Iranian Soil and Water Research Institute, Agriculture and Natural Resources Research Center, Ilam, Iran.
Email: [email protected]

  •  Accepted: 02 August 2011
  •  Published: 17 July 2012

Abstract

 

In order to determine the effects of planting pattern and drought stress on rice in Western Iran during 2005 to 2006, this research was performed. Experiment form was split plot in randomized complete block design with four replications. In this research, patterns of irrigation (I1, I2 and I= 10 cm water irrigation, five-dayalternate irrigation, and five-day alternate irrigation until the beginning of heading with 10 cm flooding till it gets to the ripening time, respectively) were the major factors and rice variations (Anbar boo, Tarem, Neda,Line 6 and Kadoos as V1, V2, V3, Vand V5, respectively) were the minor factors. The results of this research showed that water limitation in procreative period and loading of seed induced decrease in the time required for it to reach the maximum weight and maximum amount of amylases, and also, water limitation in this period of growth and germination, decreased seed weight and amount of amylase in rice. The time of reaching tthe maximum amount of amylases in all treatments was less than the time of reaching the maximum seed weight. Also, water limitation in vegetable growth period is not efficient on seed weight and amount of amylases.