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	ACCESSION	PLANT NAME	TAXONOMY	ORIGIN	GENEBANK	RECEIVED	SOURCE TYPE	SOURCE DATE	IMPROVEMENT LEVEL	NARRATIVE
0	PI 541869	Tashkent 1219	Pyrus ×nivalis Jacq.	Tashkent, Uzbekistan	COR	1987	DONATED	04/15/1987	Cultivated material		1436805	PI 541869
1	PI 541867	P. nivalis Y-5	Pyrus ×nivalis Jacq.	Oregon, United States	COR	1986	DEVELOPED		Breeding material		1436803	PI 541867
2	PI 312144	P. nivalis Leiden Botanical Garden	Pyrus ×nivalis Jacq.	Netherlands	COR	1983	DONATED	03/02/1966	Cultivated material	PI 312144. Unnumbered old tree of 1818 at Leiden Botanical Garden.	1233102	PI 312144
3	PI 541745	P. nivalis (hybrid) - Yugoslavia - compa	Pyrus ×nivalis Jacq.	Oregon, United States	COR	1983	DEVELOPED		Breeding material	Fruit larger, stem longer than P. communis. Original seedlot collected by Bukeric	1436681	PI 541745
4	PI 541862	P. nivalis	Pyrus ×nivalis Jacq.	Oregon, United States	COR	1983	DEVELOPED		Breeding material	Original seedlot collected by Q.B. Zielinski	1436798	PI 541862
5	PI 541864	P. nivalis	Pyrus ×nivalis Jacq.	Netherlands	COR	1983	DEVELOPED		Breeding material		1436800	PI 541864
6	PI 541866	Kew 1983	Pyrus ×nivalis Jacq.	England, United Kingdom	COR	1983	DEVELOPED		Cultivated material		1436802	PI 541866
7	PI 541860	P. nivalis No. 2	Pyrus ×nivalis Jacq.	Oregon, United States	COR	1981	DEVELOPED		Breeding material		1436796	PI 541860
8	PI 312145	P. nivalis Leiden Botanical Garden	Pyrus ×nivalis Jacq.	Netherlands	COR	1981	DEVELOPED		Cultivated material	PI 312145. Unnumbered young tree at Leiden Botanical Garden.	1233103	PI 312145
9	PI 541859	P-91	Pyrus ×nivalis Jacq.	Oregon, United States	COR	1981	DEVELOPED	1925	Breeding material	Fire blight resistant rootstock. The Southern Oregon Experiment Station made a concerted attempt to find fire blight resistant root and framework stocks from 1923 and 1931. Over 10,000 French P. communis seedlings were grown and repeatedly inoculated with the blight organism, and after 5-6 years only ten trees survived. These seedlings were capable of transmitting blight resistance to a high percentage of their progeny, particularly when cross pollinated with other blight resistant pears. The best of the resistant seedlings were W-1, W-2, P-18, P-30, P-61, P-70 and P-87 (F. Reimer. 1950. Oregon Agricultural Experiment Station Bulletin 485). - H. Hartman, 1957	1436795	PI 541859