Vol. 26 No. 1 (1978)

Papers

• Foreword

  C. Dorsman

  1-1

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• Bibliography up to 1977 on research with the IVT phytotron

  L. Smeets

  2-7

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• The phytotron of the Institute for Horticultural Plant Breeding (IVT), Wageningen, the Netherlands, A revision of previous descriptions

  L. Smeets

  8-12

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• The effect of flowering date and temperature on embryo development in sweet cherry (Prunus avium L.).

  J.P. Braak

  13-30

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• Plantlet formation from internode bases of carnation (Dianthus caryophyllus L.) in vivo - useful to mutation breeding or not?

  J.B.M. Custers

  31-40

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• Effect of temperature on sex expression in onion (Allium cepa L.).

  Q.P. van der Meer, J.L. van Bennekom

  41-44

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• Induction of male sterility in lettuce (Lactuca sativa L.) with GA3; influence of temperature and GA3 concentration.

  A.H. Eenink, A.L.J. Vereyken

  45-50

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• The effect of relative humidity on incompatibility and fertility in Brassica oleracea L.

  N.P.A. van Marrewijk, D.L. Visser

  51-58

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• Effect of relative humidity on fruit set and seed set in pepper (Capsicum annuum L.).

  J. Baer, L. Smeets

  59-63

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• The influence of temperature and light on parthenocarpy in pickling cucumbers (Cucumis sativus L.).

  O.M.B. de Ponti

  64-67

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• The effect of temperature on growth and development of cultivars of radish (Raphanus sativus L. var. radicula Pers.) under summer conditions.

  M. Nieuwhof

  68-75

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• Breeding for early root thickening of radish (Raphanus sativus L. var. radicula Pers.) under poor light conditions. I. Performance of F1 half-sib families at different temperatures in late autumn.

  M. Nieuwhof, F. Garretsen

  76-80

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• Genotype X environment interactions with lettuce (Lactuca L.) in relation to the development of genotypes for growing under poor energy conditions.

  A.H. Eenink, L. Smeets

  81-98

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• Inheritance of temperature-dependent string formation in common bean (Phaseolus vulgaris L.).

  E. Drijfhout

  99-105

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• Improvement of flowering in Calceolaria by cold treatment and selection.

  Y.O. Kho, J. Baer

  106-109

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• Selection for wide temperature adaptation in Chrysanthemum morifolium (Ramat.) Hemsl.

  J. de Jong

  110-118

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• Hybrid tea-roses under controlled light conditions. I. The effect of the level of irradiance on the growth and development of seedlings.

  D.P. de Vries, L. Smeets

  119-127

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• Hybrid tea-roses under controlled light conditions. 2. Flowering of seedlings as dependent on the level of irradiance.

  D.P. de Vries, L. Smeets

  128-132

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