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tables: inoculated seedlings scored for degree of infection.

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.

Photographs, experimental results, notes from literature: examination of meiosis in dwarf seedlings and the original self-fertile cherries.

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

Tables, correspondence, photographs. Includes sub-file of correspondence etc. with MAFF re licenses to work with non-indigenous bacteria.