25份北欧小麦抗白粉性评价及抗白粉病基因标记鉴定     

王俊美  刘红彦  康振生  Buchenauer Heinrich  宋玉立  王瑞 《植物保护学报》2009,36(5):385-391

采用苗期人工接菌的方法鉴定了25份北欧小麦对河南省7个不同地区小麦白粉病菌分离物的抗性,同时利用与已知抗白粉病基因Pm2、Pm3f、Pm4、Pm6、Pm13、Pm16、Pm21和Pm24连锁的分子标记对其中抗性优良的材料进行基因检测。结果表明,8份材料对所有接种的白粉病菌菌株表现高抗或免疫;其中NGB7476和NGB7809携带Pm4a和Pm16基因, NGB7481和NGB9954携带Pm6和Pm16基因,NGB9955和NGB9956同时携带Pm4a、Pm6和Pm16基因,8份材料均不携带Pm2、Pm3f、Pm4b、Pm13、Pm21 和Pm24基因。  相似文献   

Crown and tree allometry of open-grown ash (<Emphasis Type="Italic">Fraxinus excelsior</Emphasis> L.) and sycamore (<Emphasis Type="Italic">Acer pseudoplatanus</Emphasis> L.)     

Sebastian Hein  Heinrich Spiecker 《Agroforestry Systems》2008,73(3):205-218

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Nervous control of the heart during thoracic temperature regulation in a sphinx moth   总被引：1，自引：0，他引：1  

B Heinrich 《Science (New York, N.Y.)》1970,169(945):606-607

Heating the thorax of the sphinx moth, Manduca sexta, evoked pulsations of the heart in the abdomen. These pulsations were of relatively high rate and amplitude, and traveled from the abdomen into the thorax. While heat was continuously applied exclusively to the thorax, thoracic temperature often stabilized and abdominal temperature increased sharply. Thoracic heating of moths with transected nerve cord, however, did not evoke these responses. It is inferred that the heart in the abdomen responds to overheating of the thorax through neural influence.  相似文献   

Design of a biodegradable carrier for the application of controller bacteria on air–water interfaces     

Matías N Morelli  Manuel Ibaez  Rodrigo J Leonardi  Liliana G Santiago  Horacio Irazoqui  Josu M Heinrich 《Pest management science》2020,76(1):296-303

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Relationships between long-term trends of air temperature,precipitation, nitrogen nutrition and growth of coniferous stands in Central Europe and Finland     

Karl Heinz Mellert  Jörg Prietzel  Ralf Straussberger  Karl Eugen Rehfuess  Hans Peter Kahle  Pedro Perez  Heinrich Spiecker 《European Journal of Forest Research》2008,127(6):507-524

Height growth of 19 Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) stands in Germany, Austria and Finland, for which long-term records of foliar nutrient levels were available, was assessed retrospectively by stem analyses and compared with data from regionally applied yield tables as references. Gridded historical time series of monthly temperature and precipitation were used to characterise the meteorologic conditions at the sampling sites. Climate parameters were tested against height growth in period 1950–2000, and needle N content was tested against height growth for the periods where N measurements were available by means of graphical comparison, as well as simple and multiple regression analyses with the aim to get evidence for causes of possible growth acceleration. Trends of referenced height increment of six out of nine Scots pine stands in Germany were positive during the observation period, and improved N nutrition appeared to be the most important driving factor for this growth acceleration. The variation of precipitation—exhibiting no consistent and uniform long-term temporal trend during the observation period—in contrast seems to be mainly responsible for the interannual fluctuation of height growth. We were not able to detect any general statistical influence of temperature parameters on height growth, although they generally increased. The referenced height growth of three Finnish pine stands slightly decreased during the observation period and there was no indication of a significant improvement of their N supply. Among four Norway spruce stands investigated in Germany and Austria, referenced height increment also increased in three cases; there was again some evidence that improved N nutrition was the stimulating factor. At three study sites in Finland, however, referenced height growth of this species decreased at least from 1985 onwards, whereas mostly no significant trends in N nutrition or precipitation were identified. These differences observed between species and regions are discussed in detail.  相似文献   

Overview of Recent Growth Trends in European Forests     

Heinrich Spiecker 《Water, air, and soil pollution》1999,116(1-2):33-46

Natural environmental changes and human activities have altered forest growth for centuries. Recent long-term growth investigations indicate an increasing growth trend in European forests. The investigations are based on forest inventory, permanent plot and tree analysis data. The observed trends are species specific, locally varying and modified by remarkably large periodic growth variations. On a European scale, species and site specific quantitative information about the extent and spatial as well as temporal variation in growth acceleration is lacking. Future growth development may differ from past observations. A better understanding of changes in site conditions, their causes and consequences is needed to guide sustainable management of European forests.  相似文献   

Zur Kenntnis der Buchenblattlaus Phyllaphis fagi (L.) (Homoptera,Aphidoidea), einer wichtigen Honigtauerzeugerin auf Buche     

Dr. Heinrich Schmutterer 《Journal of pest science》1952,25(1):1-5

Zusammenfassung 1. Auf dem häufigsten Laubbaum Mitteleuropas, der Rotbuche(Fagus silvatica), lebt die BuchenblattlausPhyllaphis fagi (L.), welche eine bienenwirtschaftliche sehr wichtige Honigtauerzeugerin ist. Die Art ist bisher in der Imkerliteratur kaum berücksichtigt worden.2.Phyllaphis fagi erzeugt im Jahr mehrere Generationen. Diese bestehen, mit Ausnahme der letzten Herbstgeneration, aus lebendgebärenden Weibchen, die zur Fortpflanzung keine Begattung benötigen. In der zweiten und dritten Generation treten auch ungeflügelte Weibchen auf. Die letzte Generation wird von geflügelten Männchen und ungeflügelten, begattungsbedürftigen Weibchen gebildet. Letztere legen überwinternde Eier ab. Die Buche wird von allen Generationen als Nährpflanze beibehalten.3. Natürliche Feinde der Buchenblattlaus sind Schwebfliegen, Schlupfwespen, Marienkäfer und Florfliegen. Die Larven der Schwebfliegen räumen stellenweise sehr stark unter ihren Beutetieren auf.4. Die Buchenblatt-Tracht liegt zeitlich in der Periode der stärksten Vermehrung und Honigtauproduktion der Buchenlaus im letzten Mai- und ersten Junidrittel. Da der Honigtau an den Blattunterseiten sehr rasch erstarrt, kann er von den Bienen in der Regel nur in den frühen Morgenstunden aufgenommen werden. Eine Ausnahme machen eingerollte Blätter, in denen der Honigtau lange flüssig bleibt, und die deshalb den ganzen Tag über beflogen werden können. Der Buchenblatthonig wird meist als Mischhonig. in Laubwaldgebieten häufig als Buchenblatt-Himbeer-Mischhonig-geerntet.  相似文献   

Die Formbildende Wirkung der Eigenlast von Stamm und Zweigen bei einem Nadelbaum     

Heinrich Härdtl 《Forstwissenschaftliches Centralblatt》1938,60(11):343-352

Ohne Zusammenfassung  相似文献   

Bayerischer Dogelschutz in früherer Zeit     

Dr. Heinrich Huber 《European Journal of Forest Research》1933,55(22):351-353

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Ein Versuch zur L?sung des ph?nologischen problems     

Otto Heinrich Kopp 《Forstwissenschaftliches Centralblatt》1925,47(11):820-829

Ohne Zusammenfassung  相似文献