Articles
VIRULENCE VARIATION IN 20 ISOLATES OF ERWINIA CAROTOVORA SUBSP. CAROTOVORA ON ZANTEDESCHIA CULTIVARS IN KOREA
Article number
673_90
Pages
653 – 659
Language
English
Abstract
Bacterial soft rot caused by Erwinia carotovora subsp. carotovora is a major disease in Zantedeschia spp.
Chemicals or modified cultivation methods only provide partial control of this disease.
So highly resistant cultivars are needed to produce high quality calla flowers.
Experiments were conducted to screen for Erwinia resistance in Zantedeschia spp. by a leaf disk test.
To determine variation for aggressiveness, 20 Erwinia isolates collected from sites at Jeonju, Pyeongchang, and Suwon were inoculated onto five Zantedeschia cultivars: including Wedding March as a resistant genotype, Little Suzy as a moderately resistant genotype, and Chianti as a susceptible genotype.
Ecc NHRI-3 and Ecc NHRI-6 were the most virulent isolates among the 20 isolates of Erwinia carotovora subsp. carotovora tested.
Within 25 Zantedeschia genotypes, including Z. rehmannii and Z. albomaculata, variation of Erwinia resistance ranged from almost completely resistant to extremely susceptible. Wedding March was the most resistant, while Galaxy was the most susceptible.
Chemicals or modified cultivation methods only provide partial control of this disease.
So highly resistant cultivars are needed to produce high quality calla flowers.
Experiments were conducted to screen for Erwinia resistance in Zantedeschia spp. by a leaf disk test.
To determine variation for aggressiveness, 20 Erwinia isolates collected from sites at Jeonju, Pyeongchang, and Suwon were inoculated onto five Zantedeschia cultivars: including Wedding March as a resistant genotype, Little Suzy as a moderately resistant genotype, and Chianti as a susceptible genotype.
Ecc NHRI-3 and Ecc NHRI-6 were the most virulent isolates among the 20 isolates of Erwinia carotovora subsp. carotovora tested.
Within 25 Zantedeschia genotypes, including Z. rehmannii and Z. albomaculata, variation of Erwinia resistance ranged from almost completely resistant to extremely susceptible. Wedding March was the most resistant, while Galaxy was the most susceptible.
Publication
Authors
H.R. Cho, J.H. Lim, K.J. Yun, R.C. Snijder, D.H. Goo, H.K. Rhee, K.S. Kim, H.Y. Joung, K.S. Kim
Keywords
Zantedeschia, Erwinia carotovora, calla, breeding, resistance, isolate
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