A novel system for in situ determination of heat tolerance of plants: first results on alpine dwarf shrubs

Table 1 Basic data concerning the comparative experiments focused on heat tolerance of alpine dwarf - shrubs

No.	Species	Heat exposure			Viability assay
		Date	Mode		Date	Method
1	V. gaultherioides	24 Jul 2012	D	ex situ ¹	26 Jul 2012	VAC, VEM
		24 Jul 2012	D	in situ	26, 28 Jul/2 Aug 2012	VAC, VEM
2	L. procumbens	26 Sep 2011	D	ex situ ²	27, 28 Sep 2011	ELT, VAC
		26 Sep 2011	D, L	in situ	28 Sep 2011	VEM
3	R. ferrugineum	27 Jul 2012	D	ex situ ¹	30 Jul 2012	VAC, CHFL
		27 Jul 2012	D,L	in situ	30 Jul/4, 9 Aug 2012	VEM, CHFL

Heat exposure: ex situ using detached leaves ¹ following Buchner and Neuner (2001), ² in water baths, in situ, using the Heat Tolerance Testing System HTTS. Heat exposure took place in dark - mode (D) or in light - mode (L). Viability assessment: visual assessment by computer based measurement (VAC) of leaf damage, by estimating leaf damage (VEM), by electrolyte leakage test (ELT) and by the chlorophyll fluorescence method (CHFL).

ISSN: 1746-4811