Laboratory Assessment of Susceptibility of Maize Varieties to Post-harvest Infestation By Sitophilus zeamais(Mostchulsky)(Coleoptera: Curculionidae)

查看全文 作　　者：musa abdulrasak [1]kannike;ajayi [1]mary;yusuf sáadat [1]yetunde;lawal mujidat [1]temidayo 机构地区：[1]Department of Crop Protection,University of Ilorin,Ilorin,PMB 1515,Nigeria 出　　处：《Journal of Northeast Agricultural University(English Edition)》索引2018年第25卷第4期,共7页 摘　　要：A study was carried out to determine the relative susceptibility of six maize(Zea mays L.) varieties to maize weevil,Sitophilus zeamais Motschulsky(Coleoptera: Curculionidae). It was conducted at Department of Crop Protection Laboratory,University of Ilorin, Nigeria at ambient temperature of 28±2℃ and 68%±3% relative humidity. Samples of the varieties were infestedwith five pairs of S. zeamais adults in their respective containers arranged in completely randomized design with three replications.Data were collected on moisture content, adult mortality, adult emergence, grain loss and grain damage. The index of susceptibilityand means of damage parameters were used to determine susceptibility of the maize varieties. The results showed that 2008 SYNEE W DT STR was highly resistant and 2004 TZE-W POP STR C4 was moderately resistant, while 2004 TZE-Y-POP STR C4,99 TZEE-Y-STR, EV99 QPM and TZE-Y-POP DT STR QPM C0 S1 were susceptible. Under artificial infestation, the weevils hadsignificantly longer survival period in the susceptible varieties than those in the resistant genotype. It could be concluded that thesusceptible varieties already released to farmers should be protected from maize weevil damage. 关 键 词：grain pest VARIETY SUSCEPTIBILITY damage index