Gd. Griffin et Md. Rumbaugh, HOST SUITABILITY OF 12 LEGUMINOSAE SPECIES TO POPULATIONS OF MELOIDOGYNE-HAPLA AND MELOIDOGYNE-CHITWOODI, Journal of nematology, 28(3), 1996, pp. 400-405
Legumes of the genera Astragalus (milkvetch), Coronilla (crownvetch),
Lathyrus (pea vine), Lotus (birdsfoot trefoil), Medicago (alfalfa), Me
lilotus (clover), Trifolium (clover), and Vicia (common vetch) were in
oculated with a population of Meloidogyne chitwoodi from Utah or with
one of three M. hapla populations from California, Utah, and Wyoming.
Thirty-nine percent to 86% of alfalfa (M. scutellata) and 10% to 55% o
f red clover (T. pratense) plants survived inoculation with the nemato
de populations at a greenhouse temperature of 24 +/- 3 degrees C. All
plants of the other legume species survived all nematode populations,
except 4% of the white clover (T. repens) plants inoculated with the C
alifornia M. hapla population. Entries were usually more susceptible t
o the M. hapla populations than to M. chitwoodi. Galling of host roots
differed between nematode populations and species. Root-galling indic
es (1 = none, 6 = severely galled) ranged from 1 on pea vine inoculate
d with the California population of M. hapla to 6 on yellow sweet clov
er inoculated with the Wyoming population of M. hapla. The nematode re
productive factor (Rf = final nematode population/initial nematode pop
ulation) ranged from 0 for all nematode populations on pea vine to 35
for the Wyoming population of M. hapla on alfalfa (M. sativa).