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Notes on experimental procedures, etc. and tables of scoring of selected inoculated varieties (including 'Merton' cherries) for infection/ resistance.

Register of descriptions of cherry varieties, with notes on origin, character, genetics, and references. Contains separate registers of similar notes on JI selections (in range 4813-14716), also with notes on NFT status and reference to slide collection, and on sources of genetic variation (separate sections on x-ray mutations and self-fertiles). Also lists of varieties with particular characters, including those carrying genetic traits such as dwarf.

35mm colour slides predominantly on cherry breeding and Pseudomonas, including record photographs of selections, dwarf rootstock trials, x-ray-induced mutation. Also slides on Fusarium wilt in carnation (541-9: nos. 550-571 wanting). Numbered C1-C695.

Notes: incorporation of self-fertility in bacterial canker breeding programme. Includes detailed notes on original (Lewis & Crowe) self-fertile cherry seedlings and origins of the self-fertile mutation, and draft report on nature of self-fertility.

Descriptions of canker-resistant selections at National Fruit Trials, with notes, references to slides in PM slide collection. Also descriptions of 'Merton' cherries, with b/w photographs of fruit showing comparison with standard varieties.

Descriptions of fruit: cherry seedlings 1-2265, with drawings or photographs.

Photographs, notes, correspondence re variegated sports in seedling families.

tables: inoculated seedlings scored for degree of infection.

Lists of varieties and seedlings, alphabetically and by compatibility group. Also compatibility work from other countries assimilated to UK (Crane) groups.