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    Author(s): Howard B. Kriebel
    Date: 1966
    Source: In: Joint Proceedings of the Second Genetics Workshop of the Society of American Foresters and the Seventh Lake States Forest Tree Improvement Conference; Res. Pap. NC-6. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 70-75
    Publication Series: Research Paper (RP)
    Station: North Central Research Station
    PDF: View PDF  (2.1 MB)

    Description

    The study of internal seed structure by radiography requires techniques which will give good definition. To establish the best procedures, we conducted a series of experiments in which we manipulated the principal controllable variables affecting the quality of X-radiographs: namely, focus-to-film distance, film speed (grain), exposure time, kilovoltage, and milliamperage. The results presented here will eliminate the need for repetition by others interested in moving directly to research applications of X-radiography. A few examples will illustrate the interpretation of detail and perhaps suggest how radiographs can contribute to an understanding of the biology of seed formation.

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    Citation

    Kriebel, Howard B. 1966. Technique and interpretation in tree seed radiography. In: Joint Proceedings of the Second Genetics Workshop of the Society of American Foresters and the Seventh Lake States Forest Tree Improvement Conference; Res. Pap. NC-6. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 70-75

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