Weight Loss and Germination Failure Caused by Psocids in Different Wheat Varieties
Weight Loss and Germination Failure Caused by Psocids in Different Wheat Varieties
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DOI：
10.1603/ec12253
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发表时间：
2013-02-01
影响因子：
2.2
通讯作者：
Adam, B.
中科院分区：
文献类型：
--
作者：
Gautam, S. G.;Opit, G. P.;Adam, B.
在30℃+1℃，相对湿度75%+5%的条件下，我们研究了嗜虫性脂胞杆菌对‘Jagger’硬红冬小麦品种受损(破裂)和完整籽粒的摄食在90天内造成的重量损失。嗜虫乳杆菌使受损小麦籽粒失重8.5%，显著高于完整小麦籽粒失重(0.2%)。我们还评估了在俄克拉荷马州常见的六个小麦品种，即贾格尔、‘耐力’、‘奥弗利’、‘贾加林’、‘OK Bullet’和‘Deliver’在30天的时间里支持四种粘虫种群的适宜性。种群增长幅度最大的是嗜酸乳杆菌，其次是白纹伊蚊。随后，在OK子弹头品种中，评估了损伤和完整的小麦籽粒在45d期间被Paeta侵染的重量损失和完整籽粒的萌发。百合对受损籽粒的失重率为3.3%，显著高于完整籽粒的失重率(0.4%)。根据我们的数据，40%的受侵染的完整籽粒在侵染45d后没有萌发，但如果以未侵染的籽粒的萌发失败率来调整，这一比例下降到32%。我们的数据表明，孢囊虫侵染不仅会导致小麦重量的显著下降，而且还会导致显著的萌发失败。这些数据要求制定有效的仓储小麦害虫综合管理战略，以减轻害虫的负面影响。
We investigated weight loss caused by Liposcelis entomophila (Enderlein) feeding in damaged (cracked) and intact kernels of 'Jagger' variety of hard red winter wheat over a 90-d period at 30 +/- 1 degrees C and 75 +/- 5% relative humidity. L. entomophila caused 8.5% weight loss in damaged wheat kernels, which was significantly greater than the weight loss found in intact wheat kernels (0.2%). We also evaluated the suitability of six wheat varieties commonly grown in Oklahoma, namely, Jagger, 'Endurance,' 'Overley,' 'Jagalene,' 'OK Bullet,' and 'Deliver' to support populations of four psocid species, namely, Liposcelis bostrychophila Badonnel, L. decolor (Pearman), L. entomophila, and L. paeta Pearman over a 30-d period. The greatest population increase was observed in L. bostrychophila followed by L. paeta. Subsequently, weight loss of damaged and intact wheat kernels and germination of intact kernels infested by L. paeta over a 45-d period were assessed in OK Bullet variety. L. paeta caused weight loss of 3.3% in damaged kernels, which was significantly greater than the weight loss found in intact kernels (0.4%). Based on our data, 40% of infested intact kernels failed to germinate after 45 d of infestation by L. paeta, but this decreased to 32% when adjusted using germination failure of uninfested kernels. Our data show that psocid infestations do not only cause considerable loss in weight of wheat, but also result in significant germination failure. These data call for the formulation of effective integrated psocid management strategies for stored wheat to mitigate the negative impacts of psocid pests.