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Effects of wheat cultivar mixtures on stripe rust: a meta-analysis on field trials.

机译:小麦品种混合物对条锈病的影响:对田间试验的荟萃分析。

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摘要

Using cultivar mixture with different resistance backgrounds is increasingly used to control wheat stripe rust. The effect size of cultivar mixtures on stripe rust from published results was analyzed using meta-analysis. One hundred sixty-one cultivar mixtures in eleven reference studies were analyzed using the random effect model and the fixed effect model. Furthermore, information on cultivar mixtures and wheat growing conditions were used as independent variables to analyze the influence of these variables on mixing effect on wheat stripe rust in a series of meta-regressions. Results showed that the effect size of cultivar mixtures on wheat stripe rust ranged from 22.5% to 33.4% with an average of 28.0%. The effect of cultivar mixtures was significantly affected by mixture components' disease diversity, wheat sowing rate and disease pressure (P<0.05). Higher component disease diversity had a lower estimate of effect size. Cultivar mixtures on disease reduction showed a better effect when disease occurred intensively and with moderate sowing rate of wheat.
机译:越来越多地使用具有不同抗性背景的品种混合物来控制小麦条锈病。使用荟萃分析分析了已发表结果中品种混合物对条锈病的影响大小。使用随机效应模型和固定效应模型分析了11项参考研究中的161个品种混合物。此外,有关品种混合物和小麦生长条件的信息被用作自变量,以分析这些变量在一系列荟萃回归中对小麦条纹锈病混合效应的影响。结果表明,品种混合物对小麦条锈病的影响范围为22.5%至33.4%,平均为28.0%。混合物成分的病害多样性,小麦播种率和病害压力显着影响品种混合物的效果( P <0.05)。较高的成分疾病多样性估计的效应量较低。当病害集中发生且小麦播种率适中时,混合品种对减轻病害的效果更好。

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