Antibiosis of released soybean germplasm to Mexican bean beetle (Coleoptera : Coccinellidae)

Citation
Rb. Hammond et Rl. Coope, Antibiosis of released soybean germplasm to Mexican bean beetle (Coleoptera : Coccinellidae), J ENTOM SCI, 34(2), 1999, pp. 183-190
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Entomology/Pest Control
Journal title
JOURNAL OF ENTOMOLOGICAL SCIENCE
ISSN journal
0749-8004 → ACNP
Volume
34
Issue
2
Year of publication
1999
Pages
183 - 190
Database
ISI
SICI code
0749-8004(199904)34:2<183:AORSGT>2.0.ZU;2-E
Abstract
None of the soybean, Glycine max (Merrill), cultivars released as being ins ect resistant are grown over large areas in the U.S. partly due to reduced yields and lower than expected insect resistance levels. Recently, Ohio rel eased two germplasm lines, HC95-15MB and HC95-24MB, with significant levels of insect resistance and yields approaching those of adapted cultivars. A study was conducted that compared their resistance levels to other advanced breeding lines. HC95-15MB and HC95-24MB were found to have moderate levels of resistance to Mexican bean beetle, Epilachna varivestis Mulsant, much h igher compared with the other advanced lines. Additionally, resistance leve ls in HC95-15MB and HC95-24MB remained relatively constant during two diffe rent soybean growth stages, late vegetative and mid-reproductive, compared with the resistance levels in the other germplasm lines which tended to low er as the soybeans matured. The higher levels of resistance offered by thes e two lines make them very useful as sources of germplasm for breeders in t heir breeding programs.