Download or read book Segregation and Correlated Inheritance in Marquis and Hard Federation Crosses With Factors for Yield and Quality of Spring Wheat in Montana Classic Reprint written by J. Allen Clark and published by Forgotten Books. This book was released on 2018-03-18 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Segregation and Correlated Inheritance in Marquis and Hard Federation Crosses, With Factors for Yield and Quality of Spring Wheat in Montana Since 1920 numerous agronomic data also have been accumulated which afford a basis for comparing the parental varieties. The data for six quantitative characters concerned in this inheritance study, from varietal experiments in plats at Bozeman, Moccasin, and Havre, Mont., are given in Table 2. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Segregation and Correlated Inheritance in Marquis and Hard Federation Crosses with Factors for Yield and Quality of Spring Wheat in Montana written by Jacob Allen Clark and published by . This book was released on 1926 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pp. 67.
Download or read book Segregation and Correlated Inheritance in Marquis and Hard Federation Crosses with Factors for Yield and Quality of Spring Wheat in Montana written by and published by . This book was released on 1926 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Segregation and Correlated Inheritance in Marquis and Hard Federation Crosses With Factors For Yield and Quality of Spring Wheat in Montana written by Jacob Allen Clark and published by . This book was released on 1926 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Inheritance of Earliness in Certain Varieties of Spring Wheat written by Fayette Ellsworth Stephens and published by . This book was released on 1926 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Segregation and Correlated Inheritance in Crosses Between Kota and Hard Federation Wheats for Rust and Drought Resistance written by Jacob Allen Clark and published by . This book was released on 1924 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inheritance and Correlation Studies in Crosses Between Marquis and Early Java Spring Wheats written by Prabhudas L. Patel and published by . This book was released on 1928 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inheritance of Awnedness Yield and Quality in Crosses Between Bobs Hard Federation and Propo Wheats at Davis California written by Jacob Allen Clark and published by . This book was released on 1928 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inheritance of Agronomic Characters and Certain Quality Factors in the Cross Kanred X Hard Federation written by Austin Gerald Goth and published by . This book was released on 1930 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Stress and its Management Perspectives and Strategies written by B. Venkateswarlu and published by Springer Science & Business Media. This book was released on 2011-11-22 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crops experience an assortment of environmental stresses which include abiotic viz., drought, water logging, salinity, extremes of temperature, high variability in radiation, subtle but perceptible changes in atmospheric gases and biotic viz., insects, birds, other pests, weeds, pathogens (viruses and other microbes). The ability to tolerate or adapt and overwinter by effectively countering these stresses is a very multifaceted phenomenon. In addition, the inability to do so which renders the crops susceptible is again the result of various exogenous and endogenous interactions in the ecosystem. Both biotic and abiotic stresses occur at various stages of plant development and frequently more than one stress concurrently affects the crop. Stresses result in both universal and definite effects on plant growth and development. One of the imposing tasks for the crop researchers globally is to distinguish and to diminish effects of these stress factors on the performance of crop plants, especially with respect to yield and quality of harvested products. This is of special significance in view of the impending climate change, with complex consequences for economically profitable and ecologically and environmentally sound global agriculture. The challenge at the hands of the crop scientist in such a scenario is to promote a competitive and multifunctional agriculture, leading to the production of highly nourishing, healthy and secure food and animal feed as well as raw materials for a wide variety of industrial applications. In order to successfully meet this challenge researchers have to understand the various aspects of these stresses in view of the current development from molecules to ecosystems. The book will focus on broad research areas in relation to these stresses which are in the forefront in contemporary crop stress research.
Download or read book Inheritance and Association of Earliness and Grain Yield in Four Winter X Spring Wheat Crosses Triticum Aestivum L Em Thell written by Ahmet Ertug Firat and published by . This book was released on 1977 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parental and segregating populations derived from four winter x spring wheat crosses were investigated to obtain information concerning the inheritance and association of earliness, grain yield and yieldrelated traits. Feasibility of selecting in early generations for these characteristics was also evaluated. Four winter wheat cultivars (Hyslop, Yamhill, Bezostaia 1, and Sprague) and one spring wheat cultivar (Inia 66) were chosen on the basis of their relative maturity and contrasting agronomic characteristics. Parents, F1 s, F2' s, and reciprocal backcrosses to both parents were planted in the fall in a space-planted randomized complete block design. The two environmentally diverse locations selected were the Hyslop Agronomy Farm, Corvallis, Oregon (1000 mm of rainfall) and Sherman Experimental Station, Moro, Oregon (250 mm of rainfall). The effectiveness of early generation selection for the measured characteristics was evaluated by growing F3 lines identified as the earliest 1% and the highest yielding 1% of F2 individuals in each cross. These were grown along with the parents, F1s, BC1 s, BC2 s and F2' s under space-planted conditions at Hyslop Agronomy Farm. A study with the same populations was conducted by vernalizing and planting in the spring to gain further information on earliness. Analyses of variance were conducted for all characteristics measured. Frequency distributions for days to heading of F1, F2, backcross generations and parents were examined. From the data collected, estimates of F 1 -midparent deviations, degree of dominance, heritability in the narrow sense and genetic advance under selection were determined for each cross. The data were further analyzed by parent-progeny regression, correlation and path-coefficient analyses, polynomial and multiple regressions. Partially dominant major genes, varying in number between one to five depending on the particular cross, appeared to influence heading date. Modifying factors also seemed to affect the date of heading. The gene action involved in the inheritance of earliness was primarily additive indicating that selection for earliness would be effective as early as the F2 generation under both high and low rainfall conditions. Estimates of additive and nonadditive gene action suggested both were equally important in determining the yield components. Higher heritability estimates for the components of yield indicated that there was more genetic variability associated with the yield components than yield per se. Occurrence of additive genetic variation by location interaction implied that selection should be practiced simultaneously under different environments if wide adaptability of potential lines is desired. Since pronounced additive effect by year interactions occurred for the yield components, delayed selection for these traits may not be productive. Positive correlations were obtained between yield and the number of days to heading when all generations were combined. However, in the F2 generations, it appeared possible to select for the desired earliness with high yields as indicated by the low association between these two traits. The path-coefficient analyses suggested that tiller number had the highest direct effect on grain yield. However, because of a negative association between tiller number and kernel weight, selection pressures would have to be balanced between these two components. In most cases, linear relationships existed between grain yield and seven measured traits, respectively. The result of regression analyses also showed that grain yield may be described best as a linear function of its components.
Download or read book Durability of Disease Resistance written by Th. Jacobs and published by Springer Science & Business Media. This book was released on 2012-02-02 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: From February 24 -28, 1992 an international symposium on Durability of Disease Resistance was held at the International Agricultural Centre in Wageningen, the Netherlands. The symposium, organized by the Department of Plant Breeding of Wageningen Agricultural University and the Centre for Plant Breeding and Repro duction Research, CPRO-DLO, was part of the DGIS funded programme Durable Resistance in Developing Countries. Without any form of prevention or protection nearly all crops will be seriously or even severely damaged by a range of pathogens. In modern agriculture man has been able to control many if not most pathogens using i) pesticides, ii) phyto sanitary methods such as control of seed and plant material in order to start a crop disease free, iii) agronomic measures such as crop rotation, iv) disease resis tance or combinations of these measures. Over the years the use of pesticides has increased enormously and so did the pro blems associated with pesticide use, such as environmental pollution and building of resistance and tolerance to these pesticides in the pathogens. The use of resis tance too increased strongly over the years and here too problems arose.
Download or read book Handbook of Official Grain Standards of the United States written by United States. Agricultural Marketing Service. Grain Division and published by . This book was released on 1949 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Patriot s History of the United States written by Larry Schweikart and published by Penguin. This book was released on 2004-12-29 with total page 1350 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the past three decades, many history professors have allowed their biases to distort the way America’s past is taught. These intellectuals have searched for instances of racism, sexism, and bigotry in our history while downplaying the greatness of America’s patriots and the achievements of “dead white men.” As a result, more emphasis is placed on Harriet Tubman than on George Washington; more about the internment of Japanese Americans during World War II than about D-Day or Iwo Jima; more on the dangers we faced from Joseph McCarthy than those we faced from Josef Stalin. A Patriot’s History of the United States corrects those doctrinaire biases. In this groundbreaking book, America’s discovery, founding, and development are reexamined with an appreciation for the elements of public virtue, personal liberty, and private property that make this nation uniquely successful. This book offers a long-overdue acknowledgment of America’s true and proud history.
Download or read book The Cereal Rusts Origins specificity structure and physiology written by William Rodgers Bushnell and published by . This book was released on 1984 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Origins, specificity, structure, and physiology; Evolution at the center of origin; Taxonomy of the cereal rust fungi; Specificity; The formae speciales; Race specificity and methods of study; Genetics of the pathogen: host association; Histology and molecular biology of host: parasite; Virulence frequency dynamics of cereal rust fungi; The rust fungus; Controlled infection by Puccinia graminis f.sp. tritici under artificial conditions; Developmental ultrastructure of hyphae and spores; Development and physical of teliospores; Obligate parasitism and axenic culture; The host parsite interface; The rusted host; Effects of rust on plant development in relation to the translocation of inorganic and organic solutes.
Download or read book The American Dream written by Jim Cullen and published by Oxford University Press, USA. This book was released on 2004 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first "narrative history" traces the thread that binds the dreams and aspirations of most Americans together, exploring shared history and sacred texts--the Constitution and the Declaration of Independence--in search of the origins of these ideas.
Download or read book Weapon of Choice written by Charles H. Briscoe and published by www.Militarybookshop.CompanyUK. This book was released on 2010-01 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 2003, this is the first unclassified official history authored by the U.S. Army Special Operations Command relating to Operation Enduring Freedom. Contains extensive maps and illustrations. Previously difficult to obtain, this extensive study shows what Army Special Operations Forces (ARSOF) accomplished to drive the Taliban from power and to destroy al-Quaeda and Taliban strongholds as part of the global war on terrorism during Operation Enduring Freedom.
