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고홍민,서보윤,김경혜,김지민,이택림,허진호,정지영,정진교,강성택 한국육종학회 2020 한국육종학회지 Vol.52 No.4
Recent climate changes have resulted in high temperatures, a greater frequency of flooding, and outbreaks of various plant diseasesand insect pests, the latter of which has been characterized by a change in pest type from crop chewing to sap-sucking insects. To date,however, there has been limited study of plant resistance to sap-sucking insects. This study was carried out to evaluate the resistance andgenetic patterns of the foxglove aphid Aulacorthum solani, a sap-sucking pest of soybean. We investigated the growth and reproduction ofthe foxglove aphid on five different varieties of soybean showing either susceptibility or resistance to this aphid in a non-choice test. Geneticanalysis was conducted using the two F2 populations derived from Daepung (susceptible to foxglove aphid) × IT104704 (resistant to foxgloveaphid) and Daepung × IT188399 (resistant to foxglove aphid) crosses, which were evaluated for their responses to foxglove aphids. Differencesin the responses of resistant and susceptible varieties were confirmed by monitoring aphid growth and reproduction. Although the two resistantgermplasms (IT104704 and IT188399) have a strong antibiosis effect, they showed a slight difference with respect to aphid viability. Geneticanalysis of foxglove aphid resistance showed that resistance was governed by a single dominant gene in IT104704 (3:1, p=0.11). We accordinglyidentified two resistant resources showing antibiosis to foxglove aphid, which is reported here for the first time, and also detected differencesin genetic behavior. These results could be useful not only with respect to securing materials showing resistance to the foxglove aphid butalso in the breeding of new foxglove aphid-resistant soybean cultivars.
고홍민,박수민,김경혜,김지민,이택림,허진호,이주석,정진교,강성택,Koh, Hong-Min,Park, Sumin,Kim, Kyung Hye,Kim, Ji Min,Lee, Taeklim,Heo, Jinho,Lee, Ju Seok,Jung, Jinkyo,Kang, Sungteag 한국작물학회 2018 한국작물학회지 Vol.63 No.3
The recent global climate change induced the drought, flooding, and insect pest outbreaks. These caused the severe damage to crop yield in the domesticated field and occurrence change of insect pest species. The sap-sucking insect pest, aphids are common in soybean [Glycine max (L.) Merr.] and cause serious yield losses. Thus, developing resistance cultivars is promising and efficient strategy to prevent the significant yield losses by aphid and screening germplasm is the essential procedure to achieve this goal. We tried to establish a resistance test indicator for foxglove aphid, Aulacorthum solani (Kaltenbach), in soybean and found that plant damage degree or infested plant damage is most suitable one. Also we screened around 1,200 of soybean germplasm including wild and cultivated species for its resistance to foxglove aphid from the various origins, and 67 soybeans, including PI 366121, showed antixenosis resistance, 31 germplasms among 67 antixenosis germplasms were showed antibiosis to foxglove aphid with non-choice test. The identified foxglove aphid resistant soybean resources showed significantly low rate in survival test. Furthermore, resistance type, (i.e., antibiosis or antixenosis) of each candidate were varied. In this research, we established the screening index for foxglove aphid resistance in soybean, and identified the resistance varieties. This result could be useful resources in breeding for new foxglove aphid resistance soybean cultivars, and provide fundamental information to investigate the resistance mechanism in soybean.