ISHS Acta Horticulturae 392: Genetic Improvement of Horticultural Crops by Biotechnology
CLUBROOT DISEASE RESISTANCE AND OTHER CHARACTERISTICS OF THE PROGENY OF SOMATIC HYBRIDS BETWEEN JAPANESE RADISH AND CAULIFLOWER |
| Author: | M. Hagimori |
| Keywords: | Clubroot disease, Resistance, Somatic hybrid, Brassica oleracea, Raphanus sativus, Plasmodiophora brassicae, Japanese radish, Kairan, Cauliflower, Broccoli |
| Abstract:
Progeny of somatic hybrids between Japanese radish and cauliflower were obtained to introduce clubroot disease resistance of Japanese radish into Brassica vegetables. By selfing, progeny over three generations were obtained. All of them showed perfect resistance to the disease showing no segregation of the resistance. The somatic hybrids were crossed with Brassica oleracea. Among varieties of B. oleracea used in the back cross as pollen donor, kairan, B. oleracea var alboglabra, gave the largest number of offsprings (BC1 plants). The resistance was segregated among the BCI plants. Resistant ones were perfectly resistant while susceptible ones were as weak to the disease as kairan. Only two BC2 plants were obtained from the cross between resistant BC1 plants and kairan. Both of the BC2 plants were resistant. BC3 plants were obtained from the cross between BC2 plants and kairan. | |
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