TY - JOUR
DP - National Agricultural Library
DB - PubAg
JO - Journal of economic entomology
TI - Components of resistance in three bread wheat lines to Russian wheat aphid (Homoptera: Aphididae) in South Africa
A1 - Du Toit, F.
A4 - Du Toit, F.
EP - 1989 v.82 no.6
KW - Diuraphis noxia
KW - genotype
KW - Triticum aestivum
KW - nymphs
KW - pest resistance
KW - South Africa
AN - 1384456
AB - Studies were done to determine the level of antibiosis and tolerance in three resistant wheat, Triticum aestivum L., lines, PI 262660, PI 137739, and PI 294994, to Diuraphis noxia (Mordvilko), a serious pest of wheat in South Africa. Nymphal production was lowest on PI 262660, followed by PI 137739 and PI 294994. The mean production of nymphs per adult aphid over 21 d on PI 262660, PI 137739, and PI 294994 was, respectively, 40.0, 55.1, and 66.9% of that on the susceptible cv. Betta. In the tolerance test, the plant height and dry mass of PI 262660 were significantly less affected than other entries. PI 137739 and PI 294994 were as severely affected as the susceptible entries.
PY - 1989
LA -
DA - 1989-12
VL - v. 82
IS - no. 6
SP - pp. 1779-1781
DO - 10.1093/jee/82.6.1779
ER -