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Predicao De Medias De Sinteticos De Milho Zea Mays L A Partir De Populacoes Derivadas De Hibridos Comerciais
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Book Synopsis Predição de médias de sintéticos de milho (Zea mays L.) a partir de populações derivadas de híbridos comerciais by : M. Tavarone
Download or read book Predição de médias de sintéticos de milho (Zea mays L.) a partir de populações derivadas de híbridos comerciais written by M. Tavarone and published by . This book was released on 2000 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: O objetivo do presente trabalho foi o de estudar 30 populações F2 derivadas de híbridos comerciais com vistas a formação de sintéticos, a partir da metodologia de predição de médias de sintéticos sem a utilização de cruzamentos dialélicos.
Book Synopsis Heterose em populações de milho (Zea mays L.) derivadas de híbridos comerciais e seus cruzamentos para teor de óleo no grão e caracteres agronômicos by : H. A. S. Rodrigues
Download or read book Heterose em populações de milho (Zea mays L.) derivadas de híbridos comerciais e seus cruzamentos para teor de óleo no grão e caracteres agronômicos written by H. A. S. Rodrigues and published by . This book was released on 2005 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: O milho (Zea mays L.) é considerado uma das culturas mais importantes do mundo, não só pelo fato de ser produzido em grande volume e ocupar grandes áreas cultivadas, mas também por ser uma cultura de papel sócio-econômico muito importante, haja vista fazer parte de inúmeras cadeias produtivas. Entre as características capazes de adicionar valor comercial ao milho, estão aquelas relacionadas à qualidade nutricional, com destaque para os teores de proteína e óleo no grão. O teor de óleo no grão de milho é a característica nutricional mais importante para a redução dos custos das rações para aves e suínos. Diante disso, o presente trabalho objetivou avaliar populações de milho derivadas de híbridos comerciais, quanto ao teor de óleo no grão e caracteres agronômicos. A metodologia utilizada para a determinação do teor de óleo foi a proposta pela AOAC (Official methods of analysis). A analise de variância dos dados de teor de óleo e caracteres agronômicos foi realizada utilizando a metodologia de Gardner e Eberhart. Para o teor de óleo os quadrados médios associados aos efeitos de variedades e de heterose foram significativos, evidenciando que as variedades apresentam comportamento heterogêneo e que há manifestação da heterose em seus cruzamentos, sendo a heterose média negativa.
Book Synopsis Avaliacao da produtividade de cultivares de milho (Zea mays L.) braquitico by : V.A. Zanette
Download or read book Avaliacao da produtividade de cultivares de milho (Zea mays L.) braquitico written by V.A. Zanette and published by . This book was released on 1985 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dezoito populacoes de milho braquitico foram avaliadas em quatro locais nos anos agricolas de 1982/1983 e 1983/1984. Os ensaios foram conduzido em blocos casualizados com 5 repeticoes em cada local. As comparacoes entre as populacoes foram feitas em funcao de sete caracteres da planta, cujos dados foram submetidos a analise de variancia, tanto para os ensaios individuais como para a analise conjunta para estimar as interacoes entre genotipos e ambientes. Com esta analise avaliou-se a significancia do efeito ambiental sobre o desenvolvimento das caracteristicas medidas. As comparacoes foram feitas em termos medios do desempenho de cada cultivar. Estimaram-se as correlacoes fenotipicas entre as caracteristicas avaliadas, assim com os parametros de estabilidade fenotipica para cada genotipo, segundo o modelo de EBERHART e RUSSELL (1966). Os resultados mais salientes foram: Quanto a produtividade de graos, as populacoes Piranao VD-2 de milho dentado foram em media 6,7% mais elevadas que as populacoes de milho Piranao VF1 duro, mas em relacao aos hibridos comerciais produziram 92,8%. Os valores medios de produtividade dos progenitores vs cruzamentos interpopulacionais vs hibridos comerciais, revelaram uma predominancia significativa, pelo teste -t, da produtividade dos cruzamentos interpopulacionais sobre os progenitores mas nao sobre a produtividade media das testemunhas. Quanto a heterose media, os cruzamentos interpopulacionais Piranao HV1-2-Pr x Pp e Piranao HV-1-M, foram os que apresentaram os valores (...).
Book Synopsis Variacao entre compostos e sua utilizacao no melhoramento do milho (zea mays L.). by : A. A. Cardoso
Download or read book Variacao entre compostos e sua utilizacao no melhoramento do milho (zea mays L.). written by A. A. Cardoso and published by . This book was released on 1976 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A estimacao de medias de compostos, populacoes basicas para trabalhos de selecao, e feita, usualmente, a partir de uma tabela dialelica, contendo os dados medios das n variedades e dos (1/2) (n) (n-1) hibridos entre elas, de onde o melhorista obtem, para cada caracter, as medias de todos 2n-(n+1) compostos possiveis, procedendo, em seguida, a escolha do mais conveniente. Este Processo e trabalhoso e exige o uso de computador de alta velocidade, principalmente quando o numero de variedades, no dialelico, e grande. Neste trabalho e apresentado um processo mais simples para a escolha de variedade que devem participar na formacao de compostos de milho (cada variedade participa com igual proporcao inicial de plantas na formacao do composto), sem a necessidade de estimar as medias individuais dos 2n-(n+1) compostos possiveis. Assim, com base nos principios dos cruzamentos dialelicos de GARDNER e EBERHART (1966) e no processo de predicao de medidas de compostos de EBERHART et alii (1967) desenvolveram-se expressoes que permitem estimar a variancia entre as medias dentro de cada grupo de compostos de tamanho x(x=2,3, ..., n), a media de cada grupo, a variancia ponderada entre as medias dos grupos, a media geral e a variancia total das medias de todos 2n-(n+1) compostos possiveis. A metodologia desenvolvida foi aplicada a dados experimentais de cruzamentos dialelicos, em milho, com resultados satisfatorios, dando uma orientacao para o processo de predicao de medias de compostos. Desta aplicacao observou-se que a (...).
Book Synopsis Diversidade, heterose, capacidade de combinação e predição de híbridos de populações de milho (Zea mays L.) by : Bruno Grimaldo Martinho Churata
Download or read book Diversidade, heterose, capacidade de combinação e predição de híbridos de populações de milho (Zea mays L.) written by Bruno Grimaldo Martinho Churata and published by . This book was released on 1999 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Avaliacao de quinze sintetico de milho (Zea mays L.) em cruzamento dialelicos by : J.R. Moro
Download or read book Avaliacao de quinze sintetico de milho (Zea mays L.) em cruzamento dialelicos written by J.R. Moro and published by . This book was released on 1987 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quinze sinteticos de milho, que sintetizamos a partir de linhagens elites avaliadas de per si e em "top-cross", foram avaliadas em cruzamentos dialelicos em tres locais, em ensaios em delineamento em latice 11 x 11 triplo duplicado, durante o verao de 1983/84. A analise a partir das medias ajustadas, dos quinze sinteticos e os respectivos cruzamentos F1's, pelo modelo de GARDNER e EBERHART (1966), apresentou valores de Quadrado medio significativamente estatisticamente pelo teste F, para todas as fontes de variacao dos cruzamentos F1's e elevado, sendo que, na media dos 3 locais, 50% deles produziu mais que os hibridos comercias utilizados como testemunhas. O valor de heterose media, na analise conjunta, correspondeu a 31,8% da media dos sinteticos. No desdobramento dos valores de producao, em funcao do modelo: Yij = u + 1/2 (vi + vj) x h+hi+hj+sij, para os 35% melhores cruzamentos em cada local e na media dos tres locais mostrou que o componente de heterose especifica foi muito importante na determinacao do potencial de produtividade dos cruzamentos, indicando que os sinteticos possuem altas frequencias de alelos favoraveis com efeitos de dominancia. Apesar dos efeitos de interacao por locais terem sido significativos, entre os melhores cruzamentos, ha varios que foram superiores em todos os locais e na media dos 3 locais. A analise global dos resultados mostrou que os sinteticos, obtidos a partir da recombinacao de linhagens elites previamente selecionadas para capacidade geral de combinacao, foram (...).
Book Synopsis Potencial da interpopulacao de milho (Zea mays L.) BR-105 x BR-106 para melhoramento genetico by : I.J. Pellicano
Download or read book Potencial da interpopulacao de milho (Zea mays L.) BR-105 x BR-106 para melhoramento genetico written by I.J. Pellicano and published by . This book was released on 1990 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: O presente trabalho refere-se a avaliacao do potencial genetico das populacoes de milho (Zea mays L.) BR- 105 e BR-106 para melhoramento interpopulacional. Utilizaram-se para tanto, de progenies de meios irmaos interpopulaconais, obtidos de plantas endogamicas - S1,s. estas progenies, foram avaliadas em Goiania-GO, Sete Lagoas-MG e Londrina-PR. Foram tomados dados de producao (peso de espigas despalhadas), altura da planta e da espiga e indice de espigas (numero de espigas, divido por numero de plantas por parcela). A estimativa da heterose para peso de espigas despalhadas, foi de 23,55 e 11,19% em relacao aos caracteres altura da planta e da espiga, verificou-se que o hibrido interpopulacional possui porte semelhante a media dos hibridos comerciais, utilizados como testemunhas, e valores de hetroses baixos e ate negativos, principalmente em relacao a populacao parental superior (BR-106). Para todos os caracteres avaliados foram apresentados dados de variabilidade genetica interpopulacional e progressos esperados com selecao para investigar o potencial destas populacoes para o melhoramento interpopulacional. Verificou-se que as magnitudes destas estimativas, permitem progressos substanciais com selecao recorrente e reciproca. A variancia da interacao, efeitos aditivos x locais foi 2,40 vezes a inferior a variancia genetica, aditiva para o carater peso de espigas. Estes resultados,indicam que existe variabilidade genetica aditiva suficiente para permitir progressos substanciais com selecao para uma ampla regiao, (...).
Book Synopsis Fundamentals of Analytical Chemistry by : Douglas A. Skoog
Download or read book Fundamentals of Analytical Chemistry written by Douglas A. Skoog and published by Cengage Learning. This book was released on 2013-01-01 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Known for its readability and systematic, rigorous approach, this fully updated FUNDAMENTALS OF ANALYTICAL CHEMISTRY, 9E, International Edition offers extensive coverage of the principles and practices of analytic chemistry and consistently shows students its applied nature. The book's award-winning authors begin each chapter with a story and photo of how analytic chemistry is applied in industry, medicine, and all the sciences. To further reinforce student learning, a wealth of dynamic photographs by renowned chemistry photographer Charlie Winters appear as chapter-openers and throughout the text. Incorporating Excel spreadsheets as a problem-solving tool, the Ninth Edition is enhanced by a chapter on Using Spreadsheets in Analytical Chemistry, updated spreadsheet summaries and problems, an "Excel Shortcut Keystrokes for the PC" insert card, and a supplement by the text authors, EXCEL® APPLICATIONS FOR ANALYTICAL CHEMISTRY, which integrates this important aspect of the study of analytical chemistry into the book's already rich pedagogy. New to this edition is OWL, an online homework and assessment tool that includes the Cengage YouBook, a fully customizable and interactive eBook, which enhances conceptual understanding through hands-on integrated multimedia interactivity.
Book Synopsis A Frequency Dictionary of Portuguese by : Mark Davies
Download or read book A Frequency Dictionary of Portuguese written by Mark Davies and published by Routledge. This book was released on 2007-11-29 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt: An invaluable tool for learners of Portuguese, this Frequency Dictionary provides a list of the 5000 most commonly used words in the language. Based on a twenty-million-word collection of Portuguese (taken from both Portuguese and Brazilian sources), which includes both written and spoken material, this dictionary provides detailed information for each of the 5000 entries, including the English equivalent, a sample sentence, and an indication of register and dialect variation. Users can access the top 5000 words either through the main frequency listing or through an alphabetical index. Throughout the frequency listing there are also thrity thematically-organized ‘boxed’ lists of the top words from a variety of key topics such as sports, weather, clothing and relations. An engaging and highly useful resource, A Frequency Dictionary of Portuguese will enable students of all levels to get the most out of their study of Portuguese vocabulary. Former CD content is now available to access at www.routledge.com/9780415419970 as support material. Designed for use by corpus and computational linguists it provides the full text in a format that researchers can process and turn into suitable lists for their own research work.
Download or read book Manga High written by Michael Bitz and published by Harvard Education Press. This book was released on 2009-05-01 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a four-year study, Manga High explores the convergence of literacy, creativity, social development, and personal identity in one of New York City’s largest high schools. Since 2004, students at Martin Luther King, Jr., High School in Manhattan have been creating manga—Japanese comic books. They write the stories, design the characters, and publish their works in print and on the Internet. These students—African-American and Latino teenagers—are more than interested in the art and medium of manga. They have become completely engrossed in Japanese language, culture, and society. Manga High is highlighted by reproductions and content analysis of students’ original art and writing. An appendix includes guidelines for educators on starting a comic book club.
Author :Raphael A. Viscarra Rossel Publisher :Springer Science & Business Media ISBN 13 :9048188598 Total Pages :440 pages Book Rating :4.0/5 (481 download)
Book Synopsis Proximal Soil Sensing by : Raphael A. Viscarra Rossel
Download or read book Proximal Soil Sensing written by Raphael A. Viscarra Rossel and published by Springer Science & Business Media. This book was released on 2010-07-25 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on developments in Proximal Soil Sensing (PSS) and high resolution digital soil mapping. PSS has become a multidisciplinary area of study that aims to develop field-based techniques for collecting information on the soil from close by, or within, the soil. Amongst others, PSS involves the use of optical, geophysical, electrochemical, mathematical and statistical methods. This volume, suitable for undergraduate course material and postgraduate research, brings together ideas and examples from those developing and using proximal sensors and high resolution digital soil maps for applications such as precision agriculture, soil contamination, archaeology, peri-urban design and high land-value applications, where there is a particular need for high spatial resolution information. The book in particular covers soil sensor sampling, proximal soil sensor development and use, sensor calibrations, prediction methods for large data sets, applications of proximal soil sensing, and high-resolution digital soil mapping. Key themes: soil sensor sampling – soil sensor calibrations – spatial prediction methods – reflectance spectroscopy – electromagnetic induction and electrical resistivity – radar and gamma radiometrics – multi-sensor platforms – high resolution digital soil mapping - applications Raphael A. Viscarra Rossel is a scientist at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) of Australia. Alex McBratney is Pro-Dean and Professor of Soil Science in the Faculty of Agriculture Food & Natural Resources at the University of Sydney in Australia. Budiman Minasny is a Senior Research Fellow in the Faculty of Agriculture Food & Natural Resources at the University of Sydney in Australia.
Book Synopsis Soil Management for Sustainability by : R. Lal
Download or read book Soil Management for Sustainability written by R. Lal and published by . This book was released on 1991 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book manuscripts presented originally at a World Association of Soil and Water Conservation conference held in 1989 are collected. Topics include basic processes (e.g. soil structure, soil erosion, soil compaction); management options (e.g. conservation tillage); policy issues and priorities
Book Synopsis Colloquies on the simples & drugs of India by : Garcia de Orta
Download or read book Colloquies on the simples & drugs of India written by Garcia de Orta and published by . This book was released on 1913 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wood Deterioration and Preservation by : Barry Goodell
Download or read book Wood Deterioration and Preservation written by Barry Goodell and published by ACS Symposium. This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years considerable progress has been made in elucidating wood decay mechanisms. This basic knowledge not only has the potential to develop alternative environmentally-benign wood preservatives, but may also impact other areas such as bioremediation and pulp and paper. This book will summarize the latest knowledge of the developments, potential impacts, and applications from some of the world's leading experts.
Book Synopsis Animal Suffering by : Marian Dawkins
Download or read book Animal Suffering written by Marian Dawkins and published by Springer. This book was released on 1980-11-20 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: I wrote this book because I believe that the welfare of animals is a very important subject but one about which there is a of confusion and muddled thinking. I wanted to great deal write a book which straightened out some of the confusion by looking in detail at one particular problem: how to recognize animal suffering. The book is written for anyone interested in animals and the controversies over how human beings should treat them. I have tried to convince people who might otherwise feel that science had only a rather sinister connection with animal welfare that the scientific study of animal suffering has, in fact, a major and positive contribution to make. It can give us an insight into what animals experience and this, in tum, may help us to alleviate their suffering. At the same time, I have tried to write a book that will be of at least some use to scientists. The chapters which follow pro vide an outline of the biological approach to animal welfare. I have also attempted to show sceptics that it is possible to study animal suffering without sacrificing standards of scien tific procedure. Perhaps some may even come to share my belief that the study of the subjective experiences of animals is one of the most fascinating areas in the whole of biology, as well as being of great practical and ethical importance.
Book Synopsis Principles of Instrumental Analysis by : Douglas A. Skoog
Download or read book Principles of Instrumental Analysis written by Douglas A. Skoog and published by Cengage Learning. This book was released on 2017-01-27 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt: PRINCIPLES OF INSTRUMENTAL ANALYSIS is the standard for courses on the principles and applications of modern analytical instruments. In the 7th edition, authors Skoog, Holler, and Crouch infuse their popular text with updated techniques and several new Instrumental Analysis in Action case studies. Updated material enhances the book's proven approach, which places an emphasis on the fundamental principles of operation for each type of instrument, its optimal area of application, its sensitivity, its precision, and its limitations. The text also introduces students to elementary analog and digital electronics, computers, and the treatment of analytical data. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.
Book Synopsis Soil Salinity Assessment by : J. D. Rhoades
Download or read book Soil Salinity Assessment written by J. D. Rhoades and published by Food & Agriculture Org.. This book was released on 1999 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determination of soil salinity from aqueous electrical conductivity; determination of soil salinity from soil-paste and bulk soil electrical conductivity; example uses of salinity assessment technology; operational and equipment costs associated with salinity instrumentation measurement techniques.
