Response of tolerant and susceptible soybean cultivars to Columbia lance nematode.

Reference Report for IND87045073

Title:	Response of tolerant and susceptible soybean cultivars to Columbia lance nematode.
Authors:	Weiser, G.C., Mueller, J.D., Shipe, E.R.
Source:	Soybean Genet. Newsletter 1987, 14:260-262
Abstract:	The CLN (Hoplolaimus columbus)-tolerant cultivars Foster, Centennial and Coker 368 and the susceptible Braxton were planted in subsoiled and non-subsoiled plots in a CLN-infested field near Blackville in 1986. Due to the extreme heat and drought conditions during 1986 the growth stages were compressed and all cultivars matured together. Single plants were evaluated at 5, 7 and 9 weeks after planting. CLN per g of root measurements in subsoiled plots were highly variable and no significant differences between cultivars were seen at 5 or 9 weeks after planting. However, Braxton gave significantly higher values than the others at 7 weeks. In non-subsoiled plots, where infestation and damage was greatest, Braxton had values that were significantly higher than the tolerant cultivars at 7 weeks and higher than Foster and Centinnial at 9 weeks. Root branching score reflected cultivar tolerance well at 5 and 7 weeks in subsoiled plots but was less reliable in non-subsoiled plots

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