단일적응 감자 유전자원들의 역병저항성 및 주요 농업형질 평가

국문 초록 (Abstract)

Phytophthora infestans에 의해 유발되는 감자역병은 전세계의 모든 감자 재배지대에서 발생하는 가장 치명적인 병 중의 하나로서 감자역병에 대한 저항성 품종 육성은 매우 중요한 육종 목표로 인식되고 있다. B3C1집단은 국제감자연구소로부터 도입되었으며 감자역병에 대하여 수평저항성을 가지고 있다. 그러나 이 집단은 페루의 저온단일 환경에서 선발된 계통들로서 고온장일의 국내 환경에 대한 적응성 검정은 이루어진 바 없었다. 따라서 본 연구는 국내의 고온 장일 환경 조건에서 B3C1 계통의 역병저항성과 주요 농업 관련 형질들을 평가하여 국내 재배 가능성을 검토해 보고,
앞으로 역병저항성 품종 육성을 위한 육종 소재로써의 가치를 평가하고자 수행되었다. 무방제 포장에서 역병저항성을 평가한 결과 모든 B3C1 계통들은 매우 높은 역병저항성을 나타내어 역병저항성 자원으로 가치가 높은 것으로 확인되었다. 그러나 모든 B3C1 계통에서 공통적으로 나타나는 극도의 만숙성 괴경 탈립성 불량 괴경 비대 불량 그리고 지상부 및 땅속 줄기의 과번무 현상 등은 반드시 개량되어야 할 것으로 판단되었다. B3C1 계통들은 강릉 지역 보다는 대관령 지역에서 더 높은 적응성을 나타내었으며 최종적으로 20 계통 중 LB-8(CIP393077.159)과 LB-11(CIP393371.159) 2 계통을 선발하였다. 역병에 강하고 국내의 고온장일 환경에 적응성이 높은 계통을 육성하기 위하여 B3C1 계통들은 국내 육성 계통들과 교배를 실시하였으며 지속적인 계통 선발이 진행되고 있다.

다국어 초록 (Multilingual Abstract)

Potato late blight caused by the fungus Phytophthora infestans is one of the most vital diseases damaging the potato plant. It is for this reason that breeding potato cultivars resistant to late blight is now becoming a major concern around the world. The B3C1 clones has been introduced by the Highland Agriculture Research Center RDA. The clones which came from International Potato Center in 2005 have a durable resistance to late blight. The clones were bred under a short-day condition in Peru. However there was still no report on the adaptability of these clones to the long-day condition in Korea. Therefore this study was conducted to evaluate the late blight resistance and major agronomic characteristics of B3C1 clones under Korea's long-day condition. This study was also done to generate genetic resources for developing new varieties resistant to late blight. In this study it was found out that in naturally infested field with P. infestans AUDPC (area under disease progress curve) values of all B3C1 clones were significantly lower than those of the control varieties,'Superior','Atlantic' and'Haryeong'. It was found out that B3C1 clones had a high level of resistance to late blight and that they could be used as genetic resources to breed potato varieties with late blight resistance. However several undesirable characteristics such as extremely late maturity excessive growth of stems and stolons and production of tubers that cannot easily be removed from the stolons were also observed. Among the twenty B3C1 clones two clones LB-8 (CIP393077.159) and LB-11 (CIP393371.159) were selected for cultivating at the highland area of Korea. Two B3C1 clones were crossed with Korean breeding lines and clonal selection for the progenies is still in progress.

목차 (Table of Contents)

• Abstract
• 서언
• 재료 및 방법
• 결과 및 고찰
• 초록
• 인용문헌

참고문헌 (Reference)

1 안율균, "일장처리가 감자의 기내 소괴경 형성에 미치는 영향" 한국원예학회 43 (43): 301-305, 2002

2 International Potato Center(CIP), "www.cipotato.org"

3 Haynes, K.G, "The use of area under the disease progress curve to assess resistance to late blight in potato germplasm" 81 : 137-141, 2004

4 Rural Development Administration (RDA), "The potato"

5 Slater, J.W, "The effect of night temperature on tuber initiation of the potato" 11 : 14-22, 1968

6 Schnieders, B.J., "The changes in tuber volume" 31 : 129-135, 1988

7 Minha, J.S., "Selection of heat tolerant potato genotype and their performance under heat stress" 28 : 132-134, 2001

8 Landeo, J.A., "Quantifying genetic variance for horizontal resistance to late blight in potato breeding population B3C1" CIP, Lima, Peru. 63-68, 2000

9 Landeo, J.A, "Progeny studies in potato to identify horizontal resistance to late blight and presence of R genes" 67 : 560-, 1990

10 Davidse, L.C., "Occurrence of metalaxyl-resistant strains of Phytophthora infestans in Dutch potato fields" 87 : 1219-1224, 1981

11 Malcolmson, J.F, "New R genes in Solanum demissum Lindl. and their complementary races of Phytophthora infestans (Mont.) de Bary" 15 : 199-203, 1966

12 Dowley, L.J, "Metalaxyl-resistant strains of Phytophthora infestans (Mont.) de Bary in Ireland" 24 : 417-421, 1981

13 Bodlaender, K.B.A, "Influence of temperature, radiation and photoperiod on development and yield" Sci. Univ. Nottingham. 199-210, 1963

14 Borah, M.N, "Growth of the potato as influenced by temperature" 5 : 53-72, 1962

15 Dick, V, "Gibberellins and tuberization in potato" 42 : 471-481, 1999

16 Goodwin, S.B., "Genetic change within populations of Phytophthora infestans in the United States and Canada during 1994 to 1996: Role of migration and recombination" 88 : 939-949, 1998

17 Haynes, K,G., "Evaluation of a short-day adapted tetraploid potato population with horizontal resistance to Phytophthora infesans under long-day conditions in northern Maine" 84 : 459-466, 2007

18 Kim, K.S, "Establishment of efficient selection system in the early potato breeding programs in Korea" National Kangwon Univ., Seoul. 2002

19 Kim, H.S., "Effects of alternating temperature on microtuberization of potato" 33 : 432-437, 1992

20 Saha, S.N., "Effect of night temperatures on growth and development of Indian potato varieties under short-day condition" 44 : 376-382, 1974

21 Colon, L.T., "Components of resistance to late blight in eight South American Solanum species" 101 : 441-456, 1995

22 Tarn, T.R., "Breeding potatoes for long-day, temperature climates" 9 : 217-332, 1992

23 Wastie, R, "Breeding for resistance. in: Advances in Plant Pathology, Vol. 7, Phytophthora infestans: The cause of late blight of potato" Academic Press, London 193-224, 1991

24 Landeo, J.A., "Breeding for horizontal resistance to late blight in potato free of R genes" EAPR/Boole Press Ltd., Dublin, Ireland. 268-274, 1995

25 Andrivon, D., "Assessing resistance type and levels to epidemic diseases from the analysis of disease progress curve: principles and application to potato late blight" 83 : 455-461, 2006

26 Black, W.C., "A proposal for an international nomenclature of races of Phytophthora infestans and of genes controlling immunity in Solanum demissum derivatives" 2 : 173-178, 1953

27 Young Eun Park, "A New Potato Cultivar, “Haryeong” with Resistance to Late Blight and Good Culinary Taste of Steamed Potato" 한국육종학회 38 (38): 213-214, 2006