H. A. Van Keulen

Breeding research on rose pigments. 1. The occurrence of flavonoids and carotenoids in rose petals

D.P. de Vries, H. A. Van Keulen, J. W. De Bruyn · Euphytica · 1974 · 34 citations

Life Sciences, Plant Biology, Plant Sciences +8

Rapid method for the simultaneous determination of glucose and fructose using anthrone reagent

J. W. De Bruyn, H. A. Van Keulen, J. H. A. Ferguson · Journal of the Science of Food and Agriculture · 1968 · 34 citations

Agriculture, Biochemistry, Carbohydrate Biochemistry +9

Breeding research on rose pigments. II. Combining ability analyses of variance of four flavonoids in F1 populations

D.P. de Vries, Frida Garretsen, L.A.M. Dubois et al. · Euphytica · 1980 · 19 citations

Life Sciences, Plant Biology, Plant Sciences +14

Flower colour analyses in tulip (Tulipa L.). The occurrence of carotenoids and flavonoids in tulip tepals

J.P. van Eijk, M. Nieuwhof, H. A. Van Keulen et al. · Euphytica · 1987 · 16 citations

Life Sciences, Botany, Plant Sciences +16

Selection of carrots for carotene content

O. Banga, J. W. De Bruyn, J. L. Van Bennekom et al. · Euphytica · 1958 · 11 citations

Agriculture, Agronomy, Food Science +12