A METHOD OF ACQUIRING INOCULUM OF RICE BLACK STREAKED DWARF VIRUS FROM WHEAT DARK-GREEN

X.Y. Cao, L.L. Du, J.Y. Lv, X.F. Ma, X. Wang, Y.J. Fan, Y.J. Zhou, T. Zhou

Abstract


Maize rough dwarf disease (MRDD) is one of the main viral diseases of maize, and the cause of great yield losses; one of its causal agents is Rice black-streaked dwarf virus (RBSDV). Here, we developed a method for transmitting RBSDV to maize by Laodelphax striatellus Fallén, the small brown planthopper (SBPH) from wheat plants affected by wheat dark-green dwarf disease (WDGDD). The SBPH transmitted RBSDV more efficiently when it was acquired from wheat than from maize, with an efficiency of 36.7% and 12.7%, respectively. We also found that when the same number of vectors was used, transmission efficiency was similar after feeding on either WDGDD- or MRDD-infected plants. These results indicate that the method is efficient and viable, and is expected to facilitate the identification of maize cultivars that are resistant to RBSDV.

Keywords


Maize rough dwarf disease; wheat dark-green dwarf disease; RBSDV; resistance identification; planthopper vector

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DOI: http://dx.doi.org/10.4454/jpp.v99i1.3816

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EDIZIONI ETS, Pisa, Italy