Varietal Resistance of Beans to the Mexican Bean Beetle12
1966; Oxford University Press; Volume: 59; Issue: 4 Linguagem: Inglês
10.1093/jee/59.4.899
ISSN1938-291X
AutoresW. V. Campbell, Charles H. Brett,
Tópico(s)Plant pathogens and resistance mechanisms
ResumoSixty varieties of 2 species of bush beans, Phaseolus vulgaris L. (snap beans) and P. lunatus L. (lima beans), were field tested for resistance to injury by the Mexican bean beetle, Epilachna varivestis Mulsant. Snap bean varieties least damaged were Idaho Refugee, Wade, Logan, Supergreen, Black Valentine, and Refugee U. S. no. 5. Lima bean varieties least damaged were Baby fordhook Bush Lima, Triumph, Burpee’s Bush Lima, Evergreen, and Henderson's Bush. Under controlled conditions in the laboratory, beetles laid fewer eggs on resistant than on susceptible varieties. The fecundity of beetles reared on resistant varieties was significantly less than of those reared on susceptible varieties. Bean variety had no effect on the rate of insect development. Females reared on resistant varieties in the field and laboratory were smaller and weighed less than females reared on susceptible varieties.
Referência(s)