000 01561nab a22003257a 4500
001 G51188
003 MX-TxCIM
008 121211b |||p||p||||||| |z||| |
022 0 _a0191-9040
040 _aMX-TxCIM
041 0 _aEn
043 _aQF
072 0 _aH10
082 0 4 _a92-054316
100 1 _aGiga, D.P.
_994
245 0 0 _aLevels of resistance to the maize weevil, Sitophilus zeamais (Motsch.) in exotic, local open-pollinated and hybrid maize germplasm
260 _c1992
340 _aPrinted
520 _aThe 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
546 _aEnglish
595 _aAC
650 1 0 _aColeoptera
650 1 7 _aGermplasm
_gAGROVOC
_2
_91136
650 1 7 _aPest resistance
_gAGROVOC
_2
_91199
650 1 0 _aSitophilus zeamais
_92534
650 1 0 _91314
_aZea mays
_gAGROVOC
700 1 _aMazarura, U.W,
_ecoaut.
773 0 _tInsect Science and its Application
_n92-054316
_gv. 12, no. 1/2/3, p. 159-169
942 _cJA
999 _c15873
_d15873