Lemic Darija, Mikac Katarina M, Genda Matej, Jukić Željko, Pajač Živković Ivana
Department for Agricultural Zoology, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, Croatia.
Centre for Sustainable Ecosystem Solutions, School of Earth, Atmospheric and Life Sciences, Faculty of Science, Medicine and Health, University of Wollongong, 2522 Wollongong, Australia.
Insects. 2020 Jun 3;11(6):343. doi: 10.3390/insects11060343.
The granary weevil, Linnaeus 1875, is a primary pest of stored grains worldwide. Feeding damage and progeny production of was estimated to identify the levels of resistance of the insect on different durum wheat cultivars. Insect attack on four different durum wheat cultivars was investigated over a period of 20 weeks. Durum wheats were artificially infected with 20 individuals of . Every two weeks the sample weight, hectoliter weight, moisture and the number of live weevils, including their number of progenies, were recorded. Overall findings revealed different levels of resistance of different durum wheat cultivars to infestation. The Primadur cultivar had the highest resistance, followed by the Marco Aurelio and Cesare cultivars followed finally by the Tito Flavio cultivar which was highly susceptible to . For all cultivars, apart from Primadur, metabolism increased humidity and temperature, leading to grain degradation and resulting in the potential complete loss of market value if under field conditions. Evidently, durum wheat characteristics affect the life cycle of , primarily their progeny, and thus the damage they undertake to the wheat itself. These findings are important because they enable the strategic selection of wheat cultivars that can be stored for a longer time period, while more sensitive wheat cultivars can be selected for shorter storage time and thus faster delivery to market.
谷象（Linnaeus 1875）是全球储存谷物的主要害虫。通过估计其取食损害和后代产量来确定该昆虫对不同硬粒小麦品种的抗性水平。在20周的时间里，研究了谷象对四种不同硬粒小麦品种的侵害情况。硬粒小麦被人工接种20只谷象。每两周记录一次样本重量、容重、水分以及活谷象的数量，包括其后代数量。总体研究结果揭示了不同硬粒小麦品种对谷象侵害的不同抗性水平。Primadur品种具有最高的抗性，其次是Marco Aurelio和Cesare品种，最后是对谷象高度敏感的Tito Flavio品种。对于所有品种，除了Primadur，谷象的新陈代谢会增加湿度和温度，导致谷物变质，如果在田间条件下，可能会使市场价值完全丧失。显然，硬粒小麦的特性会影响谷象的生命周期，主要是其后代，从而影响它们对小麦自身造成的损害。这些发现很重要，因为它们有助于战略性地选择能够储存更长时间的小麦品种，而对于储存时间较短从而能更快投放市场的情况，则可以选择更敏感的小麦品种。
