黑森蝇侵染耐受性冬小麦品系小麦产量分析

K. E. Roe, B. Schemerhorn
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引用次数: 0

摘要

黑森蝇是小麦的有害害虫。先锋品种25R78被认为是耐受性的,这意味着该植物可以在成功的黑森蝇侵扰中存活下来,同时降低生长效果。为了了解小麦对黑森蝇的耐受性是否会导致产量下降,并分析耐受小麦作为黑森蝇防治方法的经济可行性,本研究重点分析了虫害对耐受小麦产量的影响。本研究通过收获分析了耐先锋品种25R78、耐先锋品牌品种25R32和易感先锋品牌品种25 R47。处理过的植物用塑料罩感染,让1-2只雌蝇产卵两个小时。我们测量了头数、可育头数和分蘖数。通过测量种子总数和重量以及平均种子数和重量来分析种子。与感病小麦相比,耐受和抗性植物对产量没有显著影响。受感染的耐受植物在产量上与受感染的抗性植物相当。因此,我们提出,将耐受性纳入小麦品种将降低黑森蝇种群的选择压力,并提高这些小麦品系的耐久性。
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Wheat Yield in a Tolerant Winter Wheat Line Infested by Hessian Fly (Mayetiola destructor)
The Hessian fly, Mayetiola destructor, is a harmful pest of wheat (Triticum aestivum). Pioneer variety 25R78 is putatively tolerant, meaning that the plant can survive successful Hessian fly infestation with reduced growth effects. To understand if Hessian fly-tolerance in wheat results in reduced yield effects and to analyze the economic feasibility of tolerant wheat as a Hessian fly control method, this study focused on analyzing the effect of infestation on tolerant wheat yield. This study analyzed tolerant Pioneer variety 25R78, resistant Pioneer brand variety 25R32, and susceptible Pioneer brand variety 25R47 through harvest. Treated plants were infested using a plastic cover and allowing 1 - 2 female flies to lay eggs for two hours. We measured head, fertile head number and tiller number. Seeds were analyzed by measuring total seed number and weight, as well as average seed number and weight. Tolerant and resistant plants showed no significant effects on yield in comparison to susceptible wheat. The infested tolerant plants were comparable in yield to infested resistant plants. Therefore, we propose that tolerance incorporated into wheat varieties will lower selection pressure on Hessian fly populations and increase the durability of these wheat lines.
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