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The influence of potassium to mineral fertilizers on the maize health

Journal of Integrative Agriculture 2016年第6期15卷 1286-1292页

作者： Jan Bocianowski Piotr Szulc Anna Tratwal Kamila Nowosad dariusz piesik Department of Mathematical and Statistical Methods Poznań University of Life Sciences Department of Agronomy Poznań University of Life Sciences Department of Pests Methods Forecasting and Plant Protection Economy Institute of Plant Protection–National Research Institute Department of Genetics Plant Breeding and Seed Production Wroclaw University of Environmental and Life Sciences Department of Entomology and Molecular Phytopathology UTP University of Science and Technology

Field experiments （2009-2011） were conducted at the Department of Agronomy at Poznar~ University of Life Sciences on the fields of the Research Institute in Swadzim. We evaluated the health of maize plants of two types, depending on the variations in mineral fertilization. The conducted research recorded the occurrence of pests such as oscinella frit （Oscinella frit L.） and the European corn borer （Pyrausta nubilalis Hbn.）. Diseases recorded during the research included two patho- genes： Fusarium （Fusarium ssp.） and corn smut （Ustilago maydis Corda）. It was shown that the meteorological conditions during the maize vegetation had a significant influence on the occurrence of pests. Adding potassium to mineral fertilizers increased the maize resistance to Fusarium. Cultivation of ＂stay-green＂ cultivar shall be considered as an element of in- tegrated maize protection. The occurrence of oscineUa flit was correlated with the occurrence of Fusarium as well as the occurrence of the European corn borer for both examined cultivars.

关键词： cultivars maize diseases mineral fertilization pests

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Path analysis and estimation of additive and epistatic gene effects of barley SSD lines

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Journal of Integrative Agriculture 2016年第9期15卷 1983-1990页

作者： Jan Bocianowski Katarzyna Górczak Kamila Nowosad Wojciech Rybiński dariusz piesik Department of Mathematical and Statistical Methods Poznań University of Life Sciences Department of Genetics Plant Breeding and Seed Production Wroc?aw University of Environmental and Life Sciences Institute of Plant Genetics Polish Academy of Sciences Department of Entomology and Molecular Phytopathology UTP University of Science and Technology

In the paper presented, 99 single seed descent barley lines as well as their parental forms Roland and Apex were studied. The grain weight components and their interrelations were analyzed using simple coefficients of correlation. The direct and indirect effects of such components on grain weight per plant and 1 000-grain weight were estimated using path analysis. In the 2006 and 2007, the spike length and number of spikelets per spike were the determinants of grain weight. Genetic parameters as additive and epistasis effects were estimated for all studied traits. The results indicate the importance of both additive and epistasis gene effects of number of spikes per plant, grain weight per spike, grain number per plant and grain weight per plant in this study.

关键词： path analysis additive effect epistasis single seed descent(SSD) barley

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