Levels of resistance to the maize weevil, Sitophilus zeamais (Motsch.) in exotic, local open-pollinated and hybrid maize germplasm
Giga, D.P.
Levels of resistance to the maize weevil, Sitophilus zeamais (Motsch.) in exotic, local open-pollinated and hybrid maize germplasm - 1992 - Printed
The susceptibility of maize germplasm from CIMMYT-Mexico, Malawi and Zimbabwe-to attack by the maize weevil, Sitophilus zeamais (Motsch.) was investigated under controlled temperature (28 deg C) and r.h. (70-75). An index of susceptibility (I), derived the numbers of F1 progeny and the mean development period was used as the basis for measurement of the susceptibility. The indices of susceptibility of the CIMMYT germplasm ranged from 9.25 for Rattray Arnold (I) 8149 to 14.48 for Poza Rica 7737. Of the 17 collections of Malawi local maize evaluated MLM no. 20 was the least susceptible (I=10.72), while MLM no. 24 was most susceptible (I=13.25). The
English
0191-9040
Coleoptera
Germplasm
Pest resistance
Sitophilus zeamais
Zea mays
92-054316
Levels of resistance to the maize weevil, Sitophilus zeamais (Motsch.) in exotic, local open-pollinated and hybrid maize germplasm - 1992 - Printed
The susceptibility of maize germplasm from CIMMYT-Mexico, Malawi and Zimbabwe-to attack by the maize weevil, Sitophilus zeamais (Motsch.) was investigated under controlled temperature (28 deg C) and r.h. (70-75). An index of susceptibility (I), derived the numbers of F1 progeny and the mean development period was used as the basis for measurement of the susceptibility. The indices of susceptibility of the CIMMYT germplasm ranged from 9.25 for Rattray Arnold (I) 8149 to 14.48 for Poza Rica 7737. Of the 17 collections of Malawi local maize evaluated MLM no. 20 was the least susceptible (I=10.72), while MLM no. 24 was most susceptible (I=13.25). The
English
0191-9040
Coleoptera
Germplasm
Pest resistance
Sitophilus zeamais
Zea mays
92-054316