Identification and Molecular Traits of Arachis Species with Resistance to Bacterial Wilt

doi:10.7668/hbnxb.2008.03.041

Abstract

Abstract: The reaction to bacterial wilt disease of 79 accessions of 18 Arachis species belonging to 5 sections was evaluated in the years from 2004 to 2006.15 genotypes with high resistance were identified including 3 accession of section Procumbentes,1 of section Erectoides,1 of section Heteranthae,8 of section Arachis and 2 of A.sp.The percentage of accessions with resistance was 19% which was much higher than that of cultivated peanut.The relationship and genetic diversity of 15 Arachis accessions with bacterial wilt resistance were investigated based on SSR markers.The tetraploid species A.monticola was most closely related to the cultivated peanut A.hypogaea among the materials involved in the present study.The diploid species A.duranensis and A.chacoense of section Arachis were also closely related to the cultivated peanut.The DNA molecular characters and fingerprints of the 15 accessions were detected based on SSR products.

Key words: Arachis species, Wild species, Peanut bacterial wilt, Resistance, SSR

CLC Number:

S55.2

CHEN Ben-yin, JIANG Hui-fang, REN Xiao-ping, LIAO Bo-shou, HUANG Jia-quan. Identification and Molecular Traits of Arachis Species with Resistance to Bacterial Wilt[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(3): 170-175. doi: 10.7668/hbnxb.2008.03.041.

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