TY - JOUR
T1 - Evaluation of 29 lisianthus cultivars (Eustoma grandiflorum) and one inbred line of e. exaltatum for resistance to two isolates of fusarium solani by using hydroponic equipment
AU - Onozaki, Takashi
AU - Satou, Mamoru
AU - Azuma, Mirai
AU - Kawabe, Masato
AU - Kawakatsu, Kyoko
AU - Fukuta, Naoko
N1 - Publisher Copyright:
© 2020 The Japanese Society for Horticultural Science (JSHS), All rights reserved.
PY - 2020
Y1 - 2020
N2 - Fusarium root rot of lisianthus (Eustoma grandiflorum) caused by Fusarium solani is one of the most important and damaging lisianthus diseases. It occurs commonly in Japan and worldwide and causes serious crop losses. However, little effort has been made to breed lisianthus for resistance to this disease. We initiated a breeding program for resistance to F. solani in 2014. Twenty-nine lisianthus cultivars (E. grandiflorum) and one inbred line of Eustoma exaltatum were evaluated for resistance to two isolates (MAFF712388 and MAFF712411) of F. solani, as a first step toward the breeding of resistant cultivars. Seedlings were inoculated following injury by needle, then grown using hydroponic equipment—an efficient and reliable method for evaluating resistance. We found large differences in resistance among the 29 cultivars and the one inbred line tested. ‘Papillon Pink Flash’ was highly resistant to both isolates and showed no disease symptoms in a total of four tests. Furthermore, E. exaltatum Ohkawa No. 1 was highly resistant to isolate MAFF712388, showing no disease symptoms, and resistant to isolate MAFF712411. On the other hand, ‘Mink’, ‘Nagisa A’, ‘Nagisa B’, and ‘Vulcan Marine’ were stably susceptible with 70% to 100% of plants of these four cultivars wilting in all tests. MAFF712411 had greater pathogenicity than MAFF712388, but it is not clear whether the two isolates belong to different races.
AB - Fusarium root rot of lisianthus (Eustoma grandiflorum) caused by Fusarium solani is one of the most important and damaging lisianthus diseases. It occurs commonly in Japan and worldwide and causes serious crop losses. However, little effort has been made to breed lisianthus for resistance to this disease. We initiated a breeding program for resistance to F. solani in 2014. Twenty-nine lisianthus cultivars (E. grandiflorum) and one inbred line of Eustoma exaltatum were evaluated for resistance to two isolates (MAFF712388 and MAFF712411) of F. solani, as a first step toward the breeding of resistant cultivars. Seedlings were inoculated following injury by needle, then grown using hydroponic equipment—an efficient and reliable method for evaluating resistance. We found large differences in resistance among the 29 cultivars and the one inbred line tested. ‘Papillon Pink Flash’ was highly resistant to both isolates and showed no disease symptoms in a total of four tests. Furthermore, E. exaltatum Ohkawa No. 1 was highly resistant to isolate MAFF712388, showing no disease symptoms, and resistant to isolate MAFF712411. On the other hand, ‘Mink’, ‘Nagisa A’, ‘Nagisa B’, and ‘Vulcan Marine’ were stably susceptible with 70% to 100% of plants of these four cultivars wilting in all tests. MAFF712411 had greater pathogenicity than MAFF712388, but it is not clear whether the two isolates belong to different races.
KW - Fusarium root rot
KW - Hydroponic culture
KW - Russell prairie gentian
KW - Texas bluebell
UR - http://www.scopus.com/inward/record.url?scp=85088166813&partnerID=8YFLogxK
U2 - 10.2503/hortj.UTD-151
DO - 10.2503/hortj.UTD-151
M3 - Article
AN - SCOPUS:85088166813
SN - 2189-0102
VL - 89
SP - 473
EP - 480
JO - Horticulture Journal
JF - Horticulture Journal
IS - 4
ER -