埃塞俄比亚面包小麦(Triticum aestivum L.)品种对禾谷镰刀菌(Fusarium graminearum)头疫病的抗性

IF 1.3 Q3 AGRONOMY
Muluken Getahun, Chemeda Fininsa, Abdi Mohammed, Zelalem Bekeko
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引用次数: 0

摘要

镰刀菌头枯病(FHB)是一种毁灭性病害,会降低小麦的产量和质量。本研究旨在评估小麦品种在温室条件下对禾谷镰刀菌混合分离物喷雾接种的反应。处理采用随机完全区组设计,三次重复,使用了 24 个在埃塞俄比亚注册的面包小麦品种。这些品种接种的混合接种物来自从小麦籽粒中分离出的四种禾本科镰刀菌病原分离物。病害严重程度根据漂白小穗的比例用 1-9 级进行评估,病害进展曲线下面积(AUDPC)由病害严重程度数据确定。收获时,与对照组相比,测定籽粒重量的减少。所评估的性状之间有明显的相互关联,并且在小麦品种间表现出很大的显著差异(p < 0.0001)。品种间的病害严重程度指数从 29% 到 72% 不等,AUDPC 从 326% 天到 1010% 天不等。接种了禾谷镰孢的 Kingbird 品种的病害发展速度最慢(0.0191 单位天-1),而 Ogolcho 的病害发展速度最快(0.0581 单位天-1)。Kingbird、Wane 和 Limu 的抗病性中等,病害严重程度和 AUDPC 较低,千粒重和每穗粒重有所降低。Dereselgne、Dambal 和 Ogolcho 品种高度感病,每穗粒重降低幅度最大(分别为 53.2%、41.4% 和 37.4%),千粒重降低幅度最大(分别为 41.5%、42.8% 和 37.5%)。这些结果表明,埃塞俄比亚面包小麦品种对 FHB 的抗性程度不同。尽管目前的温室品种评估结果令人鼓舞,但还需要进行田间试验来证实目前的研究结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Resistance of bread wheat (Triticum aestivum L.) varieties to fusarium head blight (Fusarium graminearum) in Ethiopia

Resistance of bread wheat (Triticum aestivum L.) varieties to fusarium head blight (Fusarium graminearum) in Ethiopia

Fusarium head blight (FHB) is a devastating disease reduces wheat yield and quality. This study was aimed to evaluate wheat varieties' responses to spray inoculation with Fusarium graminearum mixture isolates under greenhouse conditions. The treatments were laid out in a randomized completely block design with three replications using 24 bread wheat varieties registered in Ethiopia. The varieties inoculated with mixed inoculum derived from four pathogenic isolates of F. graminearum that had been isolated from wheat kernels. Disease severity was evaluated using a 1–9 scale based on the proportion of bleached spikelets, and the area under disease progress curve (AUDPC) was determined from the disease severity data. At harvest, the kernel weight reduction was determined in comparison to the control. The evaluated traits were significantly interrelated and showed high and significant variation among (p < 0.0001) wheat varieties. Disease severity index among the varieties varied from 29% to 72%, while AUDPC varied from 326%- to 1010%-days. The disease progress rate of the Kingbird variety inoculated with F. graminearum was the slowest (0.0191 units day−1), whereas Ogolcho had the fastest disease progression rate (0.0581 units day−1). Kingbird, Wane, and Limu were moderately resistant, with lower disease severity, AUDPC, and a reduction in 1000-grain weight and grain weight per spike. Dereselgne, Dambal, and Ogolcho varieties were highly susceptible, with the greatest grain weight per spike reduction (53.2%, 41.4%, and 37.4%) and 1000-grain weight reduction (41.5%, 42.8%, and 37.5%), respectively. The results implied that there were different levels of FHB resistance in Ethiopian bread wheat varieties. Although current greenhouse evaluation of varieties gives encouraging results, field testing is required to confirm the current findings.

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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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