EVALUATION AND IDENTIFICATION OF POTATO VARIETIES RESISTANCE TO BLACK LEG (SOFT ROT) DISEASE

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BAGHERI A.; ZAFARI D.M.

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Journal: AGRICULTURAL RESEARCH Year:2005 | Volume:5 | Issue:2 Page(s): 17-26

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Title

EVALUATION AND IDENTIFICATION OF POTATO VARIETIES RESISTANCE TO BLACK LEG (SOFT ROT) DISEASE

Author(s)

BAGHERI A. | ZAFARI D.M. | Issue Writer Certificate

Keywords

BLACK LEGQ3

PECTOBACTERIUM CAROTOVORUMQ3

POTATOQ4

TOLERANCEQ4

RESISTANCE TO BLACK LEGQ4

Abstract

In order to evaluate resistance of POTATO cultivars to BLACK LEG, five tubers of each certificated cultivar were inoculated by 200 microlitres of 1*107 cfu suspensions of pectobacterium (Erwinia) carotovorum sub sp. carotovorum (P.c.c.) and covered with plastic to maintain the moisture. Seven days after inoculation, the length of BLACK LEG lesions (soft rot, discoloration, black rot) are measured on tuber by a 0-5 scale (O=non symptoms, 5= maximum rot, discoloration, black rot of tubers). In laboratory experiments, 19 out of 50 tested cultivares were found tolerant POTATO cultivars were screened for resistance to BLACK LEG. POTATO cultivars including Condor, Diamant, Aranka, Moren, Sante and Cosima were more tolerant to disease. Granulla, Barraka, Bollesta, Casmus, Exira, Sinda, MN101, Romina, Empalla, Mirpam, Samanta, Herta, Asonia, Concord, Gigant, Desiree, Stete and Aziza cultivars were fairly susceptible. In green house tests in completely Randomized design 19 cultivars were planted. Seedlings were inoculated using stem puncture with bacterial suspension when their growth reached to 10-15 centimeter. Inoculation were made with pure cultures of P.c.c. by (200 microlitres per plant) bacterial 107 cfu suspension placed in the axil of the first expanded leaf below the stem apex.After inoculation, plants were kept in a mist system to create high relative humidity. Seven to ten days after inoculation, plants were assessed with a scale 0-8 (0= non symptoms, 8= maximum symptoms). Analysis of susceptibility of POTATO cultivars to P.c.c. under green house conditions showed that cultivares Moren, Rimarka, Marfona, and Sante were relatively tolerante to BLACK LEG. But Sinja, Serenad, Idol, condor, Romano, Aranka and Diamant were susceptible. Moren was the most tolerant cultivar and Condor was the most susceptible cultivar to the pathogen.

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APA: Copy

BAGHERI, A., & ZAFARI, D.M.. (2005). EVALUATION AND IDENTIFICATION OF POTATO VARIETIES RESISTANCE TO BLACK LEG (SOFT ROT) DISEASE. AGRICULTURAL RESEARCH, 5(2), 17-26. SID. https://sid.ir/paper/84663/en

Vancouver: Copy

BAGHERI A., ZAFARI D.M.. EVALUATION AND IDENTIFICATION OF POTATO VARIETIES RESISTANCE TO BLACK LEG (SOFT ROT) DISEASE. AGRICULTURAL RESEARCH[Internet]. 2005;5(2):17-26. Available from: https://sid.ir/paper/84663/en

IEEE: Copy

A. BAGHERI, and D.M. ZAFARI, “EVALUATION AND IDENTIFICATION OF POTATO VARIETIES RESISTANCE TO BLACK LEG (SOFT ROT) DISEASE,” AGRICULTURAL RESEARCH, vol. 5, no. 2, pp. 17–26, 2005, [Online]. Available: https://sid.ir/paper/84663/en

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