Polish Journal of Natural Sciences最新文献_第8页

The effect of acetic acid on Salmonella spp. in microbiological media and in turkey carcasses 醋酸对微生物培养基和火鸡尸体中沙门氏菌的影响

Polish Journal of Natural Sciences Pub Date : 2009-09-01 DOI: 10.2478/V10020-009-0017-7

A. Mikołajczyk

引用次数: 1

APPLICATION DNA FINGERPRINT ANALYSIS FOR IDENTIFICATION OF MIXED GROUPS OF SIBERIAN STURGEON (ACIPENSER BAERI BRANDT) DNA指纹分析在西伯利亚鲟混合种群鉴定中的应用

Polish Journal of Natural Sciences Pub Date : 2009-09-01 DOI: 10.2478/V10020-009-0016-8

D. Fopp‐Bayat

引用次数: 6

Evaluation of seed yield variability in lp-type lucerne (Medicago sativa ssp. media L.) based on selected yield components. lp型苜蓿(Medicago sativa ssp)种子产量变异的评价。培养基L.)基于选定的产量成分。

Polish Journal of Natural Sciences Pub Date : 2009-06-01 DOI: 10.2478/V10020-009-0009-7

M. Wyrzykowska, J. Ziemińska, C. Stankiewicz, M. Lisowska

{"title":"Evaluation of seed yield variability in lp-type lucerne (Medicago sativa ssp. media L.) based on selected yield components.","authors":"M. Wyrzykowska, J. Ziemińska, C. Stankiewicz, M. Lisowska","doi":"10.2478/V10020-009-0009-7","DOIUrl":"https://doi.org/10.2478/V10020-009-0009-7","url":null,"abstract":"An experiment was established to study a population of long raceme peduncle-type (lp-type) lucerne. 15 groups of plants were grown in selection plots. Each group comprised plants originating from seeds collected from a single plant, and since lucerne is allogamous, the obtained results provided a basis for an evaluation within the maternal line. The aim of this study was to analyze the seed yield and the expression of phenotypic traits affecting the seed yield structure. Principle component analysis (PCA) was performed. The Euclidean distance and K-means grouping were used as a taxonomic measure of similarity between groups. Two agglomerated phenotypic groups were discriminated within the examined population, and the differentiating traits in a multivariate analysis were: number of racemes per shoot, number of seeds per shoot and seed yield per shoot. Statistical characteristics of the distinguished groups provided a basis for determining the ideotype with a high seed yield. OCENA ZMIENNOŚCI PLONU NASION LUCERNY MIESZAŃCOWEJ DŁUGOGRONIASTEJ (MEDICAGO SATIVA SSP. MEDIA L.) W OPARCIU O WYBRANE ELEMENTY STRUKTURY PLONU Małgorzata Wyrzykowska, Jolanta Ziemińska, Czesław Stankiewicz, Marzena Lisowska Katedra Hodowli Roślin i Nasiennictwa Akademia Podlaska w Siedlcach S ł o w a k l u c z o w e: lucerna, forma „Lp”, plon nasion, analiza składowych głównych, analiza skupień, zróżnicowanie fenotypowe, powtarzalność. Address: Małgorzata Wyrzykowska, University of Podlasie, ul. Bolesława Prusa 14, 08-110 Siedlce, phone: +48 (025) 643 13 22, e-mail: gosiaw1@siedlce.pl","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"24 1","pages":"93-101"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68930989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of water deficit on gas exchange parameters, productivity and grain wholesomeness of spring wheat. 水分亏缺对春小麦气体交换参数、产量和籽粒健康的影响

Polish Journal of Natural Sciences Pub Date : 2009-06-01 DOI: 10.2478/V10020-009-0008-8

J. Olszewski, A. Pszczółkowska, M. Makowska, T. Kulik, A. Okorski

引用次数: 8

Effect of disease incidence on the milk performance of high-yielding cows in successive lactations. 疾病发生率对连续泌乳高产奶牛产奶性能的影响。

Polish Journal of Natural Sciences Pub Date : 2009-06-01 DOI: 10.2478/V10020-009-0010-1

J. Miciński, J. Pogorzelska, W. Barański, Beata Kalicka

{"title":"Effect of disease incidence on the milk performance of high-yielding cows in successive lactations.","authors":"J. Miciński, J. Pogorzelska, W. Barański, Beata Kalicka","doi":"10.2478/V10020-009-0010-1","DOIUrl":"https://doi.org/10.2478/V10020-009-0010-1","url":null,"abstract":"The study was conducted in the years 2006–2008. The experimental materials comprised 368 Holstein-Friesian cows purchased from Germany as in-calf heifers. The objective of this study was to determine the health status of cows in a commercial herd kept in the Olsztyn region, based on the type and incidence of diseases that occurred during three consecutive lactations, and to analyze the effect of these diseases on milk yield and composition in the first, second and third lactation cycle. The cows were divided into five groups: HEA – clinically healthy cows (showing no disease symptoms), MAS – cows with mastitis, LAM – cows with foot/leg defects and lameness, REP – cows with reproductive problems (retention of the placenta, endometritis, ovarian cysts), MET – cows with metabolic diseases (ketosis, abomasal displacement). It was found that the most common diseases during three consecutive lactations in the investigated herd were endometritis (37.63%) which occurred soon after calving (on day 18 post-partum), mastitis (35.48%), formation of ovarian cysts (10.10%), ketosis (8.39%) and leg/foot defects (6.44%). Retention of the placenta and abomasal displacement were diagnosed much less frequently (1.62% and 0.34% respectively). The percentage of healthy cows decreased in successive lactations (19.81% in the first lactation, 12.28% in the second lactation, 6.22% in the third lactation). During each lactation, more than one third of cows suffered from mastitis. The proportion of cows showing the symptoms of ketosis increased with age, from 5.12% in the first lactation to 12.23% in the third lactation. The highest yields of milk and milk components over a 305-day lactation cycle were noted in cows with reproductive diseases (ROZ). Foot/led defects and lameness (LAM), mastitis (MAS) and metabolic diseases (MET) had the most significant effect on a decrease in milk production.","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"24 1","pages":"102-112"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Technological value of selected Polish varieties of rapeseed. 波兰油菜籽精选品种的技术价值。

Polish Journal of Natural Sciences Pub Date : 2009-06-01 DOI: 10.2478/V10020-009-0012-Z

M. Tańska, D. Rotkiewicz, Marta Ambrosewicz

引用次数: 11

Fat thickness and the longest back muscle measurement of carcasses of fatteners slaughtered at different weight. 不同体重屠宰肥猪胴体脂肪厚度及最长背部肌肉测量。

Polish Journal of Natural Sciences Pub Date : 2009-06-01 DOI: 10.2478/V10020-009-0011-0

R. Winarski, S. Wajda

引用次数: 0

THE KERNELS ENDOSPERM COLOUR OF A LONGITUDINAL SECTION OF MALTING BARLEY AND THE SIMILARITY AMONGST VARIETIES PART II. COLOUR CHANGES AFTER GERMINATION AND HEATING 麦芽大麦纵剖面籽粒胚乳颜色及品种间相似性ⅱ。发芽和加热后颜色会发生变化

Polish Journal of Natural Sciences Pub Date : 2009-03-01 DOI: 10.2478/V10020-009-0002-1

W. Kozirok, Ł. Fornal, J. Drzewiecki

引用次数: 0

Variation in leaf infection of winter wheat cultivars by fungi of genus Septoria in relation to environmental conditions 冬小麦品种叶片受真菌侵染的变化与环境条件的关系

Polish Journal of Natural Sciences Pub Date : 2009-03-01 DOI: 10.2478/V10020-009-0003-0

D. Zalewski, R. Weber, J. Kaczmarek

{"title":"Variation in leaf infection of winter wheat cultivars by fungi of genus Septoria in relation to environmental conditions","authors":"D. Zalewski, R. Weber, J. Kaczmarek","doi":"10.2478/V10020-009-0003-0","DOIUrl":"https://doi.org/10.2478/V10020-009-0003-0","url":null,"abstract":"The study, covering analysis of the variation in the intensity of septoria leaf spot, made use of the results obtained in Post-registration Variety Testing experiments carried out in Lower Silesia. Of these experiments, eight locations characterized by diverse soil conditions were selected. The analysis regarded a three-year period of cultivation, spanning 2004–2006, of eleven winter wheat cultivars. The experiments were conducted in the standard variant (a 1 ) and the intensive (a 2 ), the latter differing in nitrogen fertilization higher by 40 kg ha–1, full chemical protection against fungal diseases, use of a growth regulator and foliar feeding of the plants with multi-nutrient preparation. The analysis performed has revealed significant interaction of the cultivars with the environment, which points out to varied reaction of the wheat genotypes to atmospheric and edaphic conditions in particular years of the study. The high values of the genotype-environment interaction obtained for the locations of Kobierzyce, Tarnow, Pawlowice and Krościna indicate that in the area of Lower Silesia these experimental sites are distinguishable by increased danger that the plants may be highly infected by populations of fungi representing the genus Septoria. The fact that the number of cultivars analyzed in Post-registration Variety Testing trials each year is different, the evaluations of the interaction between the genotypes and the environments may not be absolutely reliable. Therefore, the number of experimental sites of variable edaphic-climatic conditions which is taken under analysis should be large enough. The significant differences in the level of infection of particular genotypes obtained for some locations indicate the necessity to evaluate of new cultivars in numerous environments considering the genotype-environment interaction and the danger of occurrence of new races of fungi characterized by increased aggressiveness.","PeriodicalId":39364,"journal":{"name":"Polish Journal of Natural Sciences","volume":"24 1","pages":"23-34"},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68931365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The kernels endosperm colour of a longitudinal section of malting barley and the similarity amongst varieties. Part I. The kernel endosperm colour of the longitudinal section before malting. 麦芽纵剖面籽粒胚乳颜色及品种间相似性。第一部分:麦化前籽粒胚乳纵截面颜色。

Polish Journal of Natural Sciences Pub Date : 2009-03-01 DOI: 10.2478/V10020-009-0001-2

W. Kozirok, Ł. Fornal, J. Drzewiecki

引用次数: 1