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首页> 外文期刊>International journal of soil science >Effect of Inoculated Azotobacter chroococcum and Soil Yeasts on Growth, N-uptake and Yield of Wheat ( Triticum aestivum ) under Different Levels of Nitrogen Fertilization
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Effect of Inoculated Azotobacter chroococcum and Soil Yeasts on Growth, N-uptake and Yield of Wheat ( Triticum aestivum ) under Different Levels of Nitrogen Fertilization

机译：不同氮肥水平下接种接种的固氮细菌和土壤酵母对小麦生长，氮吸收和产量的影响

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Background: Mixed inoculants are used for many crops grown under field condition and many studies have shown that mixed inoculants containing mixture of bacterial species promote greater beneficial effects than single strain inocula. Materials and Methods: A pot experiment was conducted to study the effect of inoculation with A. chroococcum or plus yeast strains ( Saccharomyces cervisiae , Candida sake , Saccharomyces exiguous , Pichia membranifaciens and Cryptococcus laurentii ) on grain germination, growth of wheat ( Triticum aestivum L.) cv., Giza-64 and to choose the best yeast strain for inoculation under field condition. Results: The results showed that the mixed inoculation of any of the yeast strains with A. chroococcum except yeast strain Cryptococcus laurentii resulted in significant (p≤0.05) increases in shoot fresh and dry weights, root fresh and dry weights. The most stimulative treatment on all plant growth parameters was that inoculated with A. chroococcum + Candida sake , scoring the following increases in germination, shoot fresh and dry weight and root fresh and dry weights making 134.09, 210.9, 30.23, 20.71 and 71.60%, respectively, compared with the single inoculation treatment with A. chroococcum alone. The response of wheat to co-inoculation with A. chroococcum and the selected yeast strain ( Candida sake ) was tested in season 2015/2016 under field condition in presence of different N levels (40, 60 and 80 kg N feddan–1). The dual inoculation treatments of A. chroococcum +yeast strain C. sake under any of the N levels produced significant (p≤0.05) increases in fresh and dry weights of shoots and roots, N-uptake and grain yield of wheat compared to the single inoculation treatment with A. chroococcum alone. Conclusion: Dual inoculation with A. chroococcum +yeast strain C. sake along with 60 kg feddan–1 is recommended for wheat fertilization in Egypt since it gave highest grain yield and was equal to that obtained with dual inoculation+80 kg feddan–1, thus saving 20 kg N-fertilizer feddan–1. The magnified promotion induced by the mixture of the yeast strain C. sake and A. chroococcum may indicate a synergetic interaction between them.
机译：背景：混合接种剂用于许多在田间条件下生长的作物，许多研究表明，含有细菌菌种混合物的混合接种剂比单株接种物具有更大的有益效果。材料和方法：进行盆栽实验，研究接种球形曲霉或其他酵母菌株（酿酒酵母，假丝酵母​​，稀有酿酒酵母，膜毕赤酵母和劳氏隐球菌）的接种对小麦萌发，小麦生长的影响。 。）cv。，Giza-64，并选择最佳酵母菌株在田间条件下进行接种。结果：结果表明，除酵母菌株劳氏隐球菌外，任何酵母菌株与绿脓杆菌的混合接种均导致苗鲜重和干重，根鲜重和干重的显着（p≤0.05）增加。在所有植物生长参数上，最刺激的处理是接种根癌农杆菌+假丝酵母，在发芽，枝干鲜重和根鲜重和干重上得分依次增加，分别为134.09、210.9、30.23、20.71和71.60％，分别与单独用嗜酸链球菌进行的单次接种处理相比。在田间条件下，在不同氮水平下（40、60和80 kg N feddan –），在田间条件下测试了小麦与绿脓杆菌和所选酵母菌株（假丝酵母）共接种的响应1 ）。与任何单一氮素相比，在任何氮水平下，双球菌+酵母菌株清酒的双重接种处理均显着（p≤0.05）增加了茎和根的鲜重和干重，小麦的氮素吸收和谷粒产量。单独用A. chroococcum接种治疗。结论：建议在埃及进行小麦施肥，同时使用双孢曲霉+酵母菌株C.清酒和60 kg feddan -1 双重接种，因为其产量最高，与两次接种相同+80 kg feddan –1 ，从而节省了20 kg N肥料feddan -1 。酵母菌株清酒梭菌和绿球菌的混合物诱导的放大促进作用可能表明它们之间存在协同作用。

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