• Title/Summary/Keyword: plant resource

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Resistance of Cowpea Cultivars to Meloidogyne arenaria and M. incognita in Korea (동부품종의 국내 분포 뿌리혹선충 저항성 검정)

  • Kang, Heonil;Jun, Taehwan;Kwon, Soonwook;Kim, Suntae;Kang, Hangwon;Kim, Yongchul;Kim, Donggeun;Ko, Hyoungrai;Choi, Insoo
    • Journal of Environmental Science International
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    • v.27 no.12
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    • pp.1241-1247
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    • 2018
  • This study was conducted to evaluate resistance of 10 different cowpea cultivars which were introduced from the United States against two major root-knot nematodes, Meloidogyne arenaria and M. incognita, that affect greenhouse crop cultivation in Korea. The results showed that the resistance of the tested cultivars to the root-knot nematodes varied with the cultivar. Texas Cream 40 showed moderate resistance to M. arenaria whereas the other cultivars were susceptible. Purple Hull Pinkeye and Texas Pinkeye Purple Hull were found to be resistant to M. incognita, whereas Mississippi Silver showed moderate resistance and the other cultivars were susceptible. As the cultivars exhibit resistance to M. arenaria and M. incognita, such cultivars resistant to root-knot nematodes should be considered during the cultivation of cowpea as a green manure crop.

Two New Bibenzyl Glucosides from Dendrobium chrysotoxum

  • Dong, Fa-Wu;Luo, Huai-Rong;Wan, Qin-Li;Xu, Feng-Qing;Fan, Wei-Wei;Wang, Kai-Jin;Li, Ning;Hu, Jiang-Miao
    • Bulletin of the Korean Chemical Society
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    • v.33 no.7
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    • pp.2247-2250
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    • 2012
  • Two new bibenzyl glucosides, 3,3',4',5-tetramethoxybibenzyl-4-O-${\beta}$-D-glucopyranoside (1) and 3,4,4',5-tetramethoxybibenzyl-3'-O-${\beta}$-D-glucopyranoside (2), together with five known ones, chrysotobibenzyl (3), erianin (4), chrysotoxine (5), gigantol (6) and tristin (7) were isolated from the stems of Dendrobium chrysotoxum. The structures of those compounds were elucidated by extensive spectroscopic analysis. Moreover, compounds 1-7 were assessed for inhibitory activity of two enzymes-AChE (acetylcholine esterase) and BChE (butyrylcholine esterase).