Screening for salinity stress tolerance in rice and finger millet genotypes using shoot Na+/K+ ratio and leaf carbohydrate contents as key physiological traits

被引：11
作者：
Vijayalakshmi D. [1 ]
Kishor Ashok S. [2 ]
Raveendran M. [2 ]
机构：
[1] Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore
[2] Department of Plant Biotechnology, Tamil Nadu Agricultural University, Coimbatore
来源：
Indian Journal of Plant Physiology | 2014年 / 19卷 / 2期
关键词：
Carbohydrate contents; Finger millet; Hydroponics; Rice; Salinity stress;
D O I：
10.1007/s40502-014-0090-y
中图分类号：
学科分类号：
摘要：
A study was conducted to find out the genetic variation for salinity tolerance in rice and finger millet genotypes. Twenty finger millet and sixteen rice genotypes were screened for their tolerance/susceptibility against salinity under hydroponics in greenhouse conditions. Screening resulted in the identification of contrasting genotypes in both the crops. Among the rice genotypes, IR 29 was found to be susceptible and FL 478 was found to be tolerant to salinity stress. Among the finger millet genotypes, CO 12 was susceptible and Trichy 1 was tolerant to salinity stress. Two genotypes showing contrasting behavior to salt stress were analyzed for their shoot Na+ to K+ ratio and leaf carbohydrate contents to understand the physiological basis of salinity tolerance. In rice and finger millet, the shoot Na+/K+ ratio was found to be significantly lower, and the carbohydrate contents were much higher in the tolerant FL 478 and Trichy 1 relative to IR29 and CO 12 upon salinity treatment. Lower shoot Na+/K+ ratio coupled with higher carbohydrate contents could serve as indices to screen genotypes tolerant to salinity stresses. © 2014 Indian Society for Plant Physiology.
引用
收藏
页码：156 / 160
页数：4
相关论文
共 29 条
  • [1] Akbar M., Yabuno T., Breeding saline-resistant varieties of rice. IV. Inheritance of delayed type panicle sterility induced by salinity, Japanese Journal of Breeding, 27, pp. 237-240, (1977)
  • [2] Almodares A., Hadi M.R., Dosti B., The effects of salt stress on growth parameters and carbohydrates contents in sweets sorghum, Research Journal of Environmental Science, 2, 4, pp. 298-304, (2008)
  • [3] Chotechuen S., Responses of rice (Oryza sativa L.) to salt stress, pp. 34-77, (2001)
  • [4] Epstein E., Genetic potentials for solving problems of soil mineral stress: Adaptation of crops to salinity, Plant Adaptation to Mineral Stress in Problem Soils, pp. 73-123, (1977)
  • [5] Epstein E., Norlyn J.D., Rush D.W., Kingsbury R., Kelley D.B., Wrana A.F., Saline culture of crops: A genetic approach, Science, 210, pp. 399-404, (1980)
  • [6] Flowers T.J., Yeo A.R., Variability in the resistance of sodium chloride salinity within rice varieties, New Phytologist, 88, pp. 363-373, (1981)
  • [7] Flowers T.J., Yeo A.R., Breeding for salinity resistance in crop plants-Where next, Australian Journal of Plant Physiology, 22, pp. 875-884, (1995)
  • [8] Golldack D., Quigley F., Michalowski C.B., Kamasani U.R., Bohnert H.J., Salinity stress tolerant and sensitive rice (Oryza sativa L.) regulate AKT1-type potassium channel transcripts differently, Plant Molecular Biology, 51, pp. 71-81, (2003)
  • [9] Gregorio G.B., Senadhira D., Mendoza R.D., Screening rice for salinity tolerance, pp. 1-30, (1997)
  • [10] Hedge J.E., Hofreiter B.T., Determination of total carbohydrates by anthrone method, Methods in Carbohydrate Chemistry, (1962)
123