Table 3.

Mean recovery rates after cryopreservation (%) by using PVS2 vitrification of shoot tips is dependent on the Pyrus species. In the first two years, controls without cryopreservation were additionally analyzed for some accessions.

Section	Subsection	Species	No Acc.	No of Ex-Plants	Recovery (%)
					Cryo	SD	Control without Cryo
Pyrus		P. pyraster	PYR0312	20	70.00
		P. pyraster	PYR0303	20	60.00
		P. pyraster	PYR0308	80	43.75	20.12
		P. pyraster	PYR0308	10			40.00
		P. communis	PYR0116	80	11.25	14.31
		P. communis	PYR0116	20			15.00
		P. balansae	PYR0020	40	0.00
Pashia Koehne	Armoricana (Decne.) Terpó	P. cordata	PYR0014	80	48.75	19.49
		P. cordata	PYR0014	10			70.00
		P. cossonii	PYR0023	100	0.20	0.40
		P. cossonii	PYR0023	10			10.00
	Mongolica (Decne.) Terpó	P. ovoidea	PYR0032	20	5.00
	Pashia (Koehne) Terpó	P. betulaefolia	PYR0040	80	28.75	14.31
		P. betulaefolia	PYR0040	20			40.00
		P. calleriana	PYR0115	80	30.00	23.72
		P. calleriana	PYR0115	10			30.00
	Pontica Decne. Emend. Terpó	P. ×nivalis	PYR0073	20	10.00
		P. elaeagrifolia	PYR0017	20	15.00
	Pyrifolia Tuz	P. ×bretschneideri	PYR0041	100	47.00	16.31
		P. ×bretschneideri	PYR0041	20			95.00
	Xeropyrenia (Fed.) Tuz	P. korshinskyi	PYR0202	80	88.75	8.20
		P. korshinskyi	PYR0202	10			30.00
Average					32.67		40.78