Reference Report for IND79020177
Title: | Relative tolerance of selected soybean cultivars to Hoplolaimus columbus nematodes and possible effects of soil temperature. |
Authors: | Nyczepir, A.P., Lewis, S.A. |
Source: | J. Nematol. 1979, 11(1):27-31 |
Abstract: | Eleven soybean [Glycine max (L.) Merr.] cultivars resistant to one or more plant parasitic nematodes, and 1 resistant to the Mexican bean beetle (Epilachna varivestis Muls.), were tested for susceptibility to H. columbus. All cultivars were parasitized, but nematode reproduction varied. 'Pickett-71' was the most susceptible host among the cultivars tested. 'Dyer' and 3 P.I. [plant introduction] cultivars were most tolerant when yield per plant and total yield were compared for fumigated and unfumigated plots, even though their yield potential was low. 'Hardee', 'Coker 4504', 'W-4', 'D71-9257' and 'ED-371' appeared tolerant throughout the growing season and yielded well in unfumigated soil. Infection and reproduction of H. columbus in 'Forrest' soybean roots were greater at 30 .+-. 1.degree. C than at 20 or 25 .+-. 1.degree. C. Plant height and root weight varied with the soil treatments. |