Table 2.

Screening techniques for abiotic stress tolerance on potatoes

Screening techniques	Abiotic stress	References
In vitro tuberization	heat	Khan et al. (2015), Nowak and Colborne (1989)
Internodal elongation	heat	Nagarajan and Minhas (1995)
Nodal cutting tuberization assay	heat	Ewing and Wareing (1978), Reynolds and Ewing (1989b), Van den Berg et al. (1990)
Seedling assay	heat	Levy et al. (1991), Sattelmacher (1983)
Pulling resistance of root (PR)	drought	Ekanayake and Midmore (1992)
In vitro assay	drought	Albiski et al. (2012), Anithakumari et al. (2011), Barra et al. (2013), Gopal and Iwama (2007), Hassanpanah (2009), Huynh et al. (2014)
Electrolyte leakage bioassay	salinity, drought, cold and heat	Arvin and Donnelly (2008)
In vitro assay	salinity	Aghaei et al. (2008), Khrais et al. 1998, Queirós et al. (2007), Zhang and Donnelly (1997)
In vitro recurrent selection	salinity	Ochatt et al. (1999)
Hydroponic sand-based system	salinity	Shaterian et al. (2008)