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Development of Rhyzopertha dominica (Coleoptera: Bostrychidae) on sorghum: Quality characteristics and varietal susceptibility
Journal of Stored Products Research ( IF 2.7 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.jspr.2020.101569
F.H. Arthur , S.R. Bean , D. Smolensky , S. Cox , H.H. Lin , K.H.S. Peiris , J. Peterson

Abstract A white low polyphenol sorghum, a red-waxy starch sorghum, a red-tannin sorghum with moderate polyphenol levels, and a red non-tannin sorghum were evaluated for susceptibility to Rhyzopertha dominica (Fab.) (Coleopter: Bostrychidae), the lesser grain borer. Density levels of 0 (untreated controls), 10, 20, or 30 mixed-sex adults were exposed on 100 g replicates of each of the varieties and removed after two weeks. Progeny production and physical damage were evaluated on each variety, along with quality characteristics such as moisture content, protein, starch, phenolic content, and kernel vitreousity. Progeny production and physical damage varied with density level and variety, but was generally lowest on the red-waxy sorghum. At the density level of 30 parental adults more progeny were found in the red-tannin sorghum compared to the other varieties. Starch content, kernel vitreousity and hardness was lower in the red-tannin sorghum. Total phenolic content was 2–3x greater in the red-tannin sorghum compared to the other varieties, but the high phenolic content did not seem to affect R. dominica progeny production. Results suggest the insects bypassed the bran layer of the sorghum varieties to feed on the germ and endosperm. Results of this study could be used to further explore the relationships between kernel hardness, chemical composition, and susceptibility to stored product insects, and incorporate results into management programs for maintaining quality of stored sorghum and processed sorghum food by-products.

中文翻译:

在高粱上培育多米尼卡丝虫(鞘翅目:Bostrychidae):品质特性和品种敏感性

摘要 评估了一种白色低多酚高粱、一种红蜡淀粉高粱、一种具有中等多酚水平的红单宁高粱和一种红色非单宁高粱对多米尼卡丝虫(Fab.)(鞘翅目:Bostrychidae)的敏感性。谷物蛀虫。密度水平为 0(未处理的对照)、10、20 或 30 只混合性成虫暴露在每个品种的 100 g 重复上,并在两周后移除。评估了每个品种的后代产量和物理损伤,以及水分含量、蛋白质、淀粉、酚类含量和籽粒玻璃质等质量特征。后代产量和物理损害因密度水平和品种而异,但一般在红糯高粱上最低。在 30 个亲本成虫的密度水平上,与其他品种相比,在红单宁高粱中发现了更多的后代。红单宁高粱的淀粉含量、籽粒玻璃质和硬度较低。与其他品种相比,红单宁高粱的总酚含量高出 2-3 倍,但高酚含量似乎并未影响多米尼克红高粱后代的产量。结果表明,这些昆虫绕过了高粱品种的麸皮层,以胚芽和胚乳为食。这项研究的结果可用于进一步探索谷粒硬度、化学成分和对储藏产品昆虫的敏感性之间的关系,并将结果纳入管理计划,以保持储藏高粱和加工高粱食品副产品的质量。红单宁高粱的籽粒玻璃质和硬度较低。与其他品种相比,红单宁高粱的总酚含量高出 2-3 倍,但高酚含量似乎并未影响多米尼克红高粱后代的产量。结果表明,这些昆虫绕过了高粱品种的麸皮层,以胚芽和胚乳为食。这项研究的结果可用于进一步探索谷粒硬度、化学成分和对储藏产品昆虫的敏感性之间的关系,并将结果纳入管理计划,以保持储藏高粱和加工高粱食品副产品的质量。红单宁高粱的籽粒玻璃质和硬度较低。与其他品种相比,红单宁高粱的总酚含量高出 2-3 倍,但高酚含量似乎并未影响多米尼克红高粱后代的产量。结果表明,这些昆虫绕过了高粱品种的麸皮层,以胚芽和胚乳为食。这项研究的结果可用于进一步探索谷粒硬度、化学成分和对储藏产品昆虫的敏感性之间的关系,并将结果纳入管理计划,以保持储藏高粱和加工高粱食品副产品的质量。多米尼克后代生产。结果表明,这些昆虫绕过了高粱品种的麸皮层,以胚芽和胚乳为食。这项研究的结果可用于进一步探索谷粒硬度、化学成分和对储藏产品昆虫的敏感性之间的关系,并将结果纳入管理计划,以保持储藏高粱和加工高粱食品副产品的质量。多米尼克后代生产。结果表明,这些昆虫绕过了高粱品种的麸皮层,以胚芽和胚乳为食。这项研究的结果可用于进一步探索谷粒硬度、化学成分和对储藏产品昆虫的敏感性之间的关系,并将结果纳入管理计划,以保持储藏高粱和加工高粱食品副产品的质量。
更新日期:2020-05-01
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