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IMPACT OF WATER DEFICIT ON MORPHOLOGY AND YIELD ATTRIBUTES OF HYBRID AND INBRED RICE (Oryza sativa L.) VARIETIES
Get PDFA Thesis
By
RAZIA SULTANA RINA
Reg. No. 19-10241
Submitted to the Department of Agricultural Botany
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (M.S.)
in
AGRICULTURAL BOTANYThe pot experiment was conducted at the Research Farm of the Department of Agricultural
Botany, Sher-e-Bangla Agricultural University, during the period from November 2019 to
May 2020 to study the impact of water deficit on morphology and yield attributes of hybrid
and inbred rice varieties. The experiment comprised of two factors viz. Factor A: Variety
(4), V₁ = BRRI dhan92, V₂ = Heera 4, V₃ = Aloron and V₄ = BRRI hybrid dhan5; factor B:
Water deficit (3), T₁ = Control, T₂ = Water deficit at 45–55 days after transplanting
(tillering) and T₃ = Water deficit at 85–95 days after transplanting (flowering). The result
revealed that V₃ (Aloron) exhibited its superiority to other tested variety Heera 4, BRRI
hybrid dhan5 and BRRI dhan92 in terms of seed yield. V₃ (Aloron) out-yielded over V₂
(Heera 4) by 5.08% and V₄ (BRRI hybrid dhan5) by 11.43% higher yield. V₃ (Aloron) also
showed the tallest plant at harvest (91.60 cm), highest SPAD value (40.02), the highest
number of filled grains panicle⁻¹ (157.56), lowest number of unfilled grains panicle⁻¹
(28.08), the highest weight of 1000-grains (25.30 g), higher straw yield (7.56 t ha⁻¹), the
highest biological yield (14.38 t ha⁻¹) and harvest index (47.14%) than other tested varieties
in this experiment. On the other hand, the variety V₁ (BRRI dhan92) returned with 17.18%
lower yield than variety V₃ (Aloron) which was significantly the lowest compared to other
varieties under study. Significant differences existed among different water deficit
treatments with respect to yield and yield attributing parameters of rice. A yield advantages
of 1.81 t ha⁻¹ and 3.63 t ha⁻¹ was observed from T₁ treatment [Control)] over T₂ [ Water
deficit at 45–55 days after transplanting (tillering)] and T₃ [Water deficit at 85–95 days
after transplanting (flowering)] treated pot, respectively. The higher amount of yield from
T₁ treatment was possibly aided by the tallest plant at harvest (91.81 cm), highest number
of tillers hill⁻¹ at harvest (11.68), highest number of leaves hill⁻¹ at harvest (78.73),
maximum leaf area index (4.49), highest SPAD value (46.20), higher number of filled
grains panicle⁻¹ (167.08), lowest number of unfilled grains panicle⁻¹ (28.90), highest
weight of 1000-grains (28.40 g), the highest straw yield (9.23 t ha⁻¹), biological yield
(17.36 t ha⁻¹) and harvest index (46.81%). It was observed that water deficit at flowering
stage (85–95 days after transplanting) could be move detrimental to rice plant than water
deficit at tillering stage (45–55 days after transplanting) and significantly reduced yield
attributes and yield of rice. Among the interaction effects, T
2
II
V
3
was superior and
comparable to T
1
V
3
in most of the growth and yield attributing parameters along with grain
yield. Aloron variety seems promising for combating water deficit in rice field and
produces significantly higher yield compared to other varieties
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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