Screening of cultivated and wild adzuki bean for resistance to race 3 of <Emphasis Type="Italic">Cadophora gregata</Emphasis> f. sp. <Emphasis Type="Italic">adzukicola</Emphasis>, cause of brown stem rot |
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| Authors: | Norio Kondo Hisanori Shimada Shohei Fujita |
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| Institution: | (1) Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan;(2) Tokachi Agricultural Experiment Station, Memuro 082-0071, Japan;(3) Central Agricultural Experiment Station, Naganuma 069-1395, Japan |
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| Abstract: | Two diseases of adzuki bean, brown stem rot (BSR, caused by Cadophora gregata f. sp. adzukicola) and adzuki bean Fusarium wilt (AFW, caused by Fusarium oxysporum f. sp. adzukicola), are serious problems in Hokkaido and have been controlled using cultivars with multiple resistance. However, because a
new race of BSR, designated race 3, was identified, sources of parental adzuki bean for resistance to race 3 were needed.
Therefore, we examined 67 cultivars and lines of cultivated and wild adzuki bean maintained at the Tokachi Agricultural Experiment
Station using a root-dip inoculation method. Consequently, nine adzuki bean cultivars, one wild adzuki bean accession and
30 lines (including two lines resistant to all the three races of BSR and AFW) were confirmed to be resistant or tolerant
to race 3 of BSR, and we found a cultivar Akamame as well as a wild adzuki bean Acc2515 to be a new source for a resistance
gene to the race 3. This cultivar also holds promise as a source of resistance against other races of BSR and AFW. |
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| Keywords: | Adzuki bean Brown stem rot Cadophora gregata f sp adzukicola Fusarium oxysporum f sp adzukicola Fusarium wilt Race Soilborne fungi |
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