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Notes, graphs and measurements on dwarf cherry seedlings selected as potential rootstocks, and JI dwarf rootstock trial. Genetics of dwarf cherry.

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

tables: inoculated seedlings scored for degree of infection.

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

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

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.

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.

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.

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.

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