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Variabilitas dan Heritabilitas Berbagai Karakter Tanaman Jagung ( Zea mays L.) Hasil Persilangan Resiprokal Generasi F1
No full textThe objectives of the research was valuated variability of some characters
caused by genotype effect (σ
2
g), genotype and environment intraction (σ
2
p),
studied heritability and also to see the effect resiprocal breeding of F1 with it’s
parents of corn (Zea mays L.). The experiment was conduced at exprimental field
Faculty of Agricultural, North Sumatera University, Medan. with altitude ± 25
meters above sea level from Januari to April 2009, used Randomized Block
Design with one factor and four replication, there is F1 from Arjuna X
Sukmaraga, Sukmaraga X Arjuna, Lamuru X Kalingga, Kalingga X Lamuru,
Srikandi kuning X Bayu dan Bayu X Srikandi kuning. The result of the research
is genotype have significantly effect with plant’s height 2-7 weeks after planting,
leaf’s number 6-7 weeks after planting, age of blooms male, age of blooms
female, age of harvesting, the number of kernel per ear, the weight of kernel per
ear, the weight of 100 kernel and the net of product per plot. From progeny test
some character of genotype showed better of some character and maternal effect.
Phenotype variability all characters showed range wide variability, heritability of
plant’s height, age of blooms female, age of harvesting and weight of 100 kernel
were height and genetik variability were showed wide range so selection will be
effective at character than another character.106 HalamanSkripsi Sarjan
Uji Statbilitas Varietas Padi (Oryza Sativa L.) pada Lahan Salin dan Sulfat Masam menggunakan Analisis AMMI dan Sidik Lintas Komponen Produksi dengan Produksi
No full textABSTRACT
Muhammad Syahril Lubis, Stability Test of Rice Varieties (Oryza sativa L.) using AMMI analysis and path analysis of yield component with yield (Supervised by Rosmayati and Lollie Agustina. P. Putri).
The aims of the research are to obtain specific location varieties and varieties are stability in all locations tested and to get the parameters for indirect selection in specific location based on the value of direct and indirect effeft from path anlysis. The reserch was conducted at three location with soil conditions are optimal, acid sulfate and saline. Used 18 varieties for each location, at optimal location 18 varieties can survive, at acid sulfat location 12 varieties can survive and saline location only 5 varieties can survive.
The results showed varieties Hipa 8 Pioner, Bernas, Hipa 7 and Margasari rekommended at location with optimal conditions, varieties Punggur and Lambur recommended at acid sulfate location, Martapura specific for the optimal location and salin while Siak Raya specific for optimal location and acid sulfate soil, and Banyuasin and Dendang can be recommended for all three types of locations that were tested.
Path analysis showed an indirect selection parameters on optimal conditions among others are number of productive tillers and grain number per panicle, number of tillers and panicle length. Parameters for indirect selection on acid sulfate soil that is four characters namely plant height, number of productive tillers, grain number per panicle and % of the grains per panicle. Parameters for indirect selection on saline land are character age and number of tillers productive
. Keywords: Stability Test, AMMI Analysis, and Path AnalysisABSTRAK
Muhammad Syahril Lubis, Uji Stabilitas Beberapa Varietas Padi (Oryza sativa L.) menggunakan analisis AMMI dan sidik lintas komponen produksi dengan produksi gabah (dibimbing oleh Rosmayati dan Lollie Agustina. P. Putri).
Penelitian ini bertujuan untuk mendapatkan varietas spesifik lokasi dan varietas yang stabil disemua lokasi yang diuji dan untuk mendapatkan parameter untuk seleksi secara tidak langsung pada lingkungan spesifik berdasarkan nilai pengaruh langsung dan tidak langsung komponen hasil terhadap daya hasil. Pelaksanaan dilakukan di tiga lokasi dengan kondisi tanah yaitu optimal, sulfat masam dan salin. Pada penelitian ini digunakan 18 varietas untuk masing-masing lokasi, pada lahan optimal 18 varietas dapat bertahan hidup, pada lahan sulfat masam 12 varetas dapat bertahan hidup dan pada lahan salin 5 varietas dapat bertahan hidup.
Hasil penelitian menunjukkan varietas Hipa 8 Pioner, Bernas Hipa 7dan Margasari sesuai untuk di kembangkan pada kondisi optimal, varietas Punggur, Lambur sesuai untuk di kembangkan pada kondisi pada lokasi sulfat masam, Martapura spesifik untuk lokasi optimal dan salin sedangkan varietas Siak Raya spesifik untuk lokasi optimal dan sulfat masam, varietas Banyuasin dan Dendang dapat direkomendasikan untuk ketiga jenis lokasi yang diuji.
Sidik lintas menunjukkan parameter seleksi tidak langsung pada kondisi optimal yaitu jumlah anakan produktif dan jumlah gabah per malai, jumlah anakan dan panjang malai. Parameter untuk seleksi tidak langsung pada lahan sulfat masam yaitu empat karakter yaitu tinggi tanaman,jumlah anakan produktif, jumlah gabah permalai dan % gabah berisi. Parameter untuk seleksi tidak langsung pada lahan yaitu karakter umur panen dan jumlah anakan produktif .
Kata Kunci: Uji Stabilitas, Analisis AMMI, dan Analisis Lintas73 HalamanTesis Magiste
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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