• Title/Summary/Keyword: Solanum tuberosum L.

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Black Leg of Potato Plants by Erwinia carotovora subsp. atroseptica (Erwinia carotovora subsp. atroseptica에 의한 감자 흑각병)

  • 박덕환;김준섭;이흥구;함영일;임춘근
    • Plant Disease and Agriculture
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    • v.5 no.1
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    • pp.64-66
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    • 1999

  • Black leg occurred in potato (Solanum tuberosum L.) grown in Pyungchang, Kangwon-Do, Korea. The symptoms began as small water-soaked lesions on stem, and the affected stems discolored black to brown. It became yellow under dry condition. When lower parts of potato were affected in the field, wilting of leaves and desiccation of the stem were developed. The causal organism was isolated from lesions and identified as Erwinia carotovora subsp. atroseptica based on the morphological, physiological and biochemical characteristics. E. carotovora subsp. atroseptica is the first described bacterium which causes black leg in potato in Korea.

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Effect of Low Dose γ Radiation on the Dormancy Breaking and Growth of in vitro Microtubers of Potato (Solanum tuberosum L.) Stored at Low Temperature (저선량 방사선이 저온 저장한 감자 기내 소괴경의 휴면타파와 생육에 미치는 효과)

  • Kim, Jae-Sung;Kim, Dong-Hee;Back, Myung-Hwa;Jeon, Jae-Heung;Lee, Young-Bok
    • Horticultural Science & Technology
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    • v.19 no.4
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    • pp.515-520
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    • 2001

  • To observe the stimulating effect of low dose ${\gamma}$ radiation on the dormancy breaking and growth, microtubers of two potato cultivars (Solanum tuberosum L. cv. Dejima and cv. Superior) were irradiated at the dose of 0.5-30 Gy. Though it varied with cultivars and storage duration, sprouting rate, plant growth and tuber yield were promoted by 2-8 Gy irradiation in microtuber of 'Dejima' stored at low temperature. On the other hand, in microtuber of 'Superior', sprouting rate was promoted by 2 and 4 Gy irradiation, and the growth and tuber yield by 4 Gy irradiation. These results suggest that low dose of ${\gamma}$ radiation could have stimulating effects on the dormancy breaking of microtuber and potato growth.

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Effect of Low Dose ${\gamma}$ Radiation on the Dormancy and Growth of in vitro Microtuvers of Potato(Solanum Tuberosum L.) (저선량 ${\gamma}$선이 기냐 생산된 감자 소괴경의 휴면과 생에 미치는 효과)

  • Kim, Dong-Hee;Back, Myung-Hwa;Jeon, Jae-Heung;Kim, Jae-Sung
    • Korean Journal of Environmental Biology
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    • v.19 no.4
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    • pp.270-277
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    • 2001

  • To observe the stimulating effect of low dose ${\gamma}$ radiation on the dormancy breaking and growth, microtubers induced in vitro of two potato (Solanum tuberosum L. cv. Dejima and cv. Superior) cultivars with different storage duration were irradiated with ${\gamma}$ radiation at the dose of $0.5{\sim}30$ Gy. Sprouting rate, growth and tuber yield of ‘Dejima’ microtuber were increased by ${\gamma}$ radiation in the range of $2{\sim}16$ Gy. In the microtuber of ‘Superior’, the sprouting rate was promoted by 2 Gy and 4 Gy irradiation, and the growth and tuber yield by 0.5 Gy and 4 Gy irradiation. There were not that much difference in chlorophyll content of potato plantlet by the low dose ${\gamma}$ irradiation. These results suggested that low dose ${\gamma}$ radiation stimulated the dormancy breaking and potato growth.

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