THE EFFECT OF DIFFERENT LIGHT CONDITIONS AND SUCROSE ON THE GROWTH AND DEVELOPMENT OF THE GAMETOPHYTE OF THE FERN,ONOCLEA SENSIBILIS |
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| Authors: | John H Miller Pauline M Miller |
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| Institution: | Department of Botany, J. W. Gibbs Research Laboratory, Yale University, New Haven, Connecticut
Department of Botany, Connecticut College, New London, Connecticut |
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| Abstract: | Miller , J. H. (Yale U., New Haven, Conn.), and P. M. Miller . The effect of different light conditions and sucrose on the growth and development of the gametophyte of the fern, Onoclea sensibilis. Amer. Jour. Bot. 48(2): 154–159. Illus. 1961.—Gametophytes grow rapidly under the highest intensity white fluorescent light used, 400 ft.-c. Growth is correspondingly less at 220 and 28 ft.-c., and at the lowest light intensity the gametophytes are markedly longer than wide. One percent sucrose added to the medium reverses the growth limitation imposed by low light intensity and produces a morphology comparable to that found under higher intensities. Sucrose does not sustain heterotrophic growth in total darkness, but permits growth if the gametophytes are given low dosages of red light. The effect of red light is reversible by far-red illumination. |
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