Typical correlation analysis between forage type triticale production performance and different pilot ecological factors

国内外对小黑麦的研究主要集中在遗传性状和优良特性上，但在甘肃和青海严寒牧区的小黑麦的产量和品质方面的报道很少。【方法】本研究选育了甘农2个小黑麦品种根据不同生态区域的特点，在典型的生态区域内种植。通过研究品质性状与各种生态因子之间的关系，弄清了不同生态因子对黑小麦干草质量的影响，为今后的黑小麦育种和大规模有针对性的种植布局提供了合理的依据。【结果】甘肃省玛曲县黑小麦试种的生产性能和营养品质，都兰县甘农二号。青海省显然优于其他试点。通过合理的施肥，黑小麦的生产性能和营养品质是最好的。【结论】甘农2号最适合种植的地区是甘肃省玛曲县。

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Diversität epiphytischer Moose eines westandinen Bergregenwaldes in Ecuador

Bryophyte Diversity and Evolution ◽

10.11646/bde.15.1.6 ◽

1998 ◽

Vol 15 (1) ◽

pp. 29-43

Author(s):

Ute Müller ◽

Jan-Peter Frahm

Keyword(s):

Correlation Analysis ◽

Rain Forest ◽

Ecological Factors ◽

Dry Weight ◽

Species Number ◽

Branch Diameter ◽

Montane Rain Forest ◽

Species Numbers ◽

The Andes ◽

Average Water

The epiphytic bryophytes on tree trunks as well on branches and twigs of the canopy were studied in a montane rain forest in the Andes 110 km SW of Quito at about 2000 m elevation. Ten trees were examined on which 65 species (24 mooses and 41 liverworts) were found. The bryophyte flora of the stems consists of 14 species and is related on a level of up to 80%. The branches are inhabited by 58 species. The composition of species on branches of different trees (except those from the same trees) have a correspondence of less than 40%. The correspondence of the bryophytes on twigs of different trees is even lower. Twigs are inhabited by 24 species. Correlation analysis between species numbers and ecological factors revealed no significant correlation between species number and branch diameter, branch exposition and elevation. However, a correlation was found between increasing pH of the bark and decreasing species numbers. The average dry weight of epiphytic bryophytes was 80g/m2 on trunks, 1873 g/m2 on branches and 1230 g/m2 on twigs. The average water storing capacity of epiphytic bryophytes is 0.57 l/m2 on trunks, 19,5l/m2 on branches and 4.16 l/m2 on twigs and is thus ten times of the dry weight on branches but three times of dry weight on twigs. A representative tree of 27 m height has an average 65,4 kg dry weight of epiphytic bryophytes, which can store 669 liters of water. 10600 kg phytomass per hectare are estimated.

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Ecological Factors Determining Abundance of Parasitic Mites on Aedes spp. Larvae

Biosaintifika Journal of Biology & Biology Education ◽

10.15294/biosaintifika.v9i3.11458 ◽

2017 ◽

Vol 9 (3) ◽

pp. 566

Author(s):

Nurhadi Eko Firmansyah ◽

Susi Soviana ◽

Bambang Heru Budianto

Keyword(s):

Correlation Analysis ◽

Dissolved Oxygen ◽

Research Result ◽

Ecological Factors ◽

The Body ◽

Early Step ◽

Key Factor ◽

Total Dissolved Solid ◽

Parasitic Mites ◽

Indoor And Outdoor

Ability to infestation and abundance of parasitic mites in Aedes spp. larvae cannot be separated from the influence of various factors. Ecological factors have been suggested to play a role determine the presence of parasitic mites that under certain conditions become a key factor in determining the abundance of parasitic mites on Aedes spp. larvae. The aim of this study to determine the ecological factors affect the abundance of parasitic mites on Aedes spp. larvae in Bogor Regency. Capturing of Aedes spp. larvae was performed directly on the habitats found in indoor and outdoor. Capturing mites in the body of Aedes spp. larvae was performed using insect forceps. Ecological factors measured were dissolved oxygen (DO), pH, temperature, and total dissolved solid (TDS). The influence of ecological factors was analyzed using regression and correlation analysis. The result of mite identification has been obtained three species of mites that are Halacarus sp., Histiostoma sp., and Hydrozetes sp. The result indicated that total dissolved solid (TDS) and temperature was the factors that determined the abundance of mites. The factors of pH, and dissolved oxygen (DO) did not determine the abundance of parasitic mites of Aedes spp. larvae. The research result can be further developed as a new alternative to Dengue Hemorraghic Fever control and provide information on parasitic mites that infest Aedes spp. larvae. In addition, this results become an early step in controlling of Aedes spp. strategy platform by the parasitic mites.

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Aspectos do Comportamento da Cigarrinha-das-Pastagens Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) na Produção de Espuma

EntomoBrasilis ◽

10.12741/ebrasilis.v3i2.68 ◽

2010 ◽

Vol 3 (2) ◽

pp. 25-28

Author(s):

Elder Batista ◽

Alexander Machado Auad ◽

André Luis Furtado Braga ◽

Roberta Botelho Ferreira ◽

Noelle Martins dos Reis Hallack

Keyword(s):

Correlation Analysis ◽

Natural Enemies ◽

Immature Stage ◽

Pennisetum Purpureum ◽

Elephant Grass ◽

Behavioral Sequence ◽

Brachiaria Ruziziensis ◽

Behavioral Aspects ◽

Forage Type ◽

Signal Grass

A cigarrinha-das-pastagens Mahanarva spectabilis (Distant) produz uma espuma protetora contra inimigos naturais e à dessecação, ao longo da fase imatura. Objetivou-se avaliar o efeito do agrupamento e do tipo de forrageira na produção de espuma pela cigarrinha-das-pastagens, bem como os comportamentos exibidos durante este período, em duas diferentes forrageiras. Foram realizados testes com ninfas individualizadas no qual o tempo médio de cobertura total pela espuma foi de 38’55’’ e 40’00’’ em capim-elefante (Pennisetum purpureum Schumach.) e braquiária (Brachiaria ruziziensis Germain e Evrard), respectivamente; e testes com grupos de ninfas onde o tempo médio para cobertura total foi de 48’00’’ em capim-elefante e em braquiária 41’06’’. Por meio da análise de correlação observou-se que as ninfas que mais tardaram o início de produção de espuma foram aquelas que mais demoraram a concluí-la, nas duas forrageiras. Apresentou-se a sequência comportamental exibida pelas ninfas M. spectabilis desde a sua liberação no vaso até a total cobertura por espuma. O tempo total de cobertura não sofreu alteração significativa quando as ninfas se alimentaram de capim-elefante ou braquiária, ou ainda quando se alimentaram de forma solitária ou agregada. Behavioral aspects of the spittlebug Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) in froth production. Abstract. The spittlebug Mahanarva spectabilis (Distant) synthesizes a protective froth against natural enemies and dry along the immature stage. This study aimed to evaluate the effect of grouping and forage type in the production of the froth made by the spittlebug, and the behavior exhibited during this period. Tests with individual nymphs were performed in which the average time to complete cover by the froth was 38’55’’ and 40’00’’ in elephant grass (Pennisetum purpureum, Schumach.) and signal grass (Brachiaria ruziziensis Germain e Evrard), respectively; as well as tests with groups of nymphs where the average time to complete cover was 48’00’’ in elephant grass and in signal grass 41’06’’. The correlation analysis showed that the nymphs who later initiated the production of froth were those that took the most time to complete the cover within the two forage. The behavioral sequence exhibited by the nymphs was presented, since its release in the pot until the complete cover of the froth. The total time of coverage does not suffer significant change whether the nymphs feed on elephant grass or signal grass, or feeding in solitary or aggregated way.

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Genetic parameters of yield and morphological fruit and stone properties in apricot

Genetika ◽

10.2298/gensr0703315m ◽

2007 ◽

Vol 39 (3) ◽

pp. 315-324 ◽

Cited By ~ 4

Author(s):

Evica Mratinic ◽

Vera Rakonjac ◽

Dragan Milatovic

Keyword(s):

Correlation Analysis ◽

Genetic Correlation ◽

Genetic Parameters ◽

Ecological Factors ◽

Fruit Weight ◽

Genetic Differences ◽

Total Variance ◽

Phenotypic Correlations ◽

Genetic And Phenotypic Correlations ◽

Significant Yield

Yield, fruit and stone weight and dimensions were studied in 24 apricot cultivars over a four-year period, to determine components of variability, heritability and genetic and phenotypic correlations. The analysis of the components of total variance evidenced that genetic differences between cultivars determined to the highest percentage the variability of fruit height and stone weight and dimensions, whereas the variation of yield, and fruit weight, breadth and thickness was predominantly determined by ecological factors. The values of heritability coefficients, in a broader sense, were found to be relatively high for fruit and stone weight and dimensions (88-93%), and medium for yield (48%). It was established by correlation analysis that all genetic and phenotypic coefficients of correlation between fruit and stone weight and dimensions were positive and statistically very significant. Yield was in a very significant, positive genetic correlation with a majority of studied characters except for fruit breadth. However, the phenotypic coefficients of correlation between those properties were not statistically significant.

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Microdensitometer—computer correlation analysis of ultrastructural periodicity

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100081024 ◽

1978 ◽

Vol 36 (2) ◽

pp. 32-33

Author(s):

D.R. Ensor ◽

C.G. Jensen ◽

J.A. Fillery ◽

R.J.K. Baker

Keyword(s):

Correlation Analysis ◽

Background Noise ◽

Computer Control ◽

Optical Diffraction ◽

Screw Thread ◽

Straight Line ◽

Computer Storage ◽

Correlation Process ◽

Electron Microscope Image ◽

Fixed Beam

Because periodicity is a major indicator of structural organisation numerous methods have been devised to demonstrate periodicity masked by background “noise” in the electron microscope image (e.g. photographic image reinforcement, Markham et al, 1964; optical diffraction techniques, Horne, 1977; McIntosh,1974). Computer correlation analysis of a densitometer tracing provides another means of minimising "noise". The correlation process uncovers periodic information by cancelling random elements. The technique is easily executed, the results are readily interpreted and the computer removes tedium, lends accuracy and assists in impartiality.A scanning densitometer was adapted to allow computer control of the scan and to give direct computer storage of the data. A photographic transparency of the image to be scanned is mounted on a stage coupled directly to an accurate screw thread driven by a stepping motor. The stage is moved so that the fixed beam of the densitometer (which is directed normal to the transparency) traces a straight line along the structure of interest in the image.

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The German Strengths and Difficulties Questionnaire (SDQ)

European Journal of Psychological Assessment ◽

10.1027/1015-5759/a000034 ◽

2010 ◽

Vol 26 (4) ◽

pp. 256-262 ◽

Cited By ~ 26

Author(s):

Ulrike Petermann ◽

Franz Petermann ◽

Ina Schreyer

Keyword(s):

Correlation Analysis ◽

Teacher Ratings ◽

Screening Instrument ◽

Preschool Age ◽

Strengths And Difficulties Questionnaire ◽

Preschool Age Children ◽

Discriminant Analyses ◽

Strengths And Difficulties ◽

Behavioral Attributes ◽

And Behavior

The Strengths and Difficulties Questionnaire (SDQ) is a screening instrument that addresses positive and negative behavioral attributes of children and adolescents. Although this questionnaire has been used in Germany to gather information from parents and teachers of preschoolers, few studies exist that verify the validity of the German SDQ for this age. In the present study, teacher ratings were collected for 282 children aged 36 to 60 months (boys = 156; girls = 126). Likewise, teacher ratings were collected with another German checklist for behavior problems and behavior disorders at preschool age (Verhaltensbeurteilungsbogen für Vorschulkinder, VBV 3–6). Moreover, children’s developmental status was assessed. Evaluation included correlation analysis as well as canonical correlation analysis to assess the multivariate relationship between the set of SDQ variables and the set of VBV variables. Discriminant analyses were used to clarify which SDQ variables are useful to differentiate between children with or without developmental delay in a multivariate model. The results of correlation and discriminant analyses underline the validity of the SDQ for preschoolers. According to these results, the German teacher SDQ is recommended as a convenient and valid screening instrument to assess positive and negative behavior of preschool age children.

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