Download or read book The Improvement of Naturally Cross Pollinated Plants by Selection in Self Fertilized Lines written by Donald Forsha Jones and published by Forgotten Books. This book was released on 2017-10-28 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Improvement of Naturally Cross-Pollinated Plants by Selection in Self-Fertilized Lines: I. The Production of Inbred Strains of Corn The results of previous investigations on inbreeding corn are reviewed to Show the development of the method of selection in self - fertilized lines. Four varieties of corn have been self-fertilized and selected for five generations. Eighty-six lines were started and twenty of these were lost or discarded. The method of procedure was to grow three progenies in each line and self-pollinate five of the most desirable appearing plants in the best progeny each year. A large number of clear - cut recessive abnormalities appeared during the course Of the inbreeding. In all except one case these were eliminated by the fifth generation. NO significant difference in yield was found between segregating and non -segregating progenies in lines Showing recessive abnormal ities in the previous generation. Also lines having recessive abnormalities at the start showed no greater reduction, 1n yield during the five generations than lines that were free from them throughout the experiment. All lines showed a marked reduction in yield and a Slowing down of the rate Of growth. Although great differences were Shown, no lines were as productive as the original variety. NO appreciable correlation was found between the characters of the seed ear, weight Of seed, Size Of seedling, or the appearance of the plants at pollinating time and the production Of grain in the same genera tion. Some correlation in certain characters was found between the first and last generations, particularly in height of plant and in per cent. Of moldy ears. Less association was Shown in amount of tillering and in smut infection, while in productiveness practically no relation was found, showing that good and poor yielding strains may come from productive or unproductive plants at the start. 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 Improvement of Naturally Cross Pollinated Plants by Selection in Self Fertilized Lines 1 Production of Inbred Strains of Corn written by Donald Forsha Jones and published by . This book was released on 1925 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Improvement of Naturally Cross Pollinated Plants by Selection in Self Fertilized Lines Vol 2 written by Donald Forsha Jones and published by Forgotten Books. This book was released on 2018-01-07 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Improvement of Naturally Cross-Pollinated Plants by Selection in Self-Fertilized Lines, Vol. 2: The Testing and Utilization of Inbred Strains of Corn The application of inbreeding to the improvement of corn has received an increasing amount of attention since its inception a quarter-oi a century ago. In 1932 more than acres of corn were planted in this country with seed that had resulted, in one way or another, from the crossing of inbred plants. Although the production of hybrid corn seed seems to be well started in commercial practice, the development, testing and most advantageous use of inbred strains still present many problems. The first attempt to account for the increased growth immediately resulting from cross-fertilization may be called the physiological hypothesis of hybrid stimulation. In this it was thought that the bringing together of germinally diverse elements by crossing different lines, generated the growth activity commonly referred to as hybrid vigor. Conversely, the reduced size and slower growth rate of inbred lines was considered the natural result as the germinal constitution is simplified. 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 The Improvement of Naturally Cross pollinated Plants by Selection in Self fertilized Lines written by Connecticut Agricultural Experiment Station and published by . This book was released on 1924 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improvement of Naturally Cross Pollinated Plants by Selection in Self Fertilized Lines 2 the Testing and Utilization of Inbred Strains of Corn written by Connecticut Agricultural Experiment Station and published by . This book was released on 1935 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Improvement of Naturally Cross pollinated Plants by Selection in Self fertilized Lines written by Donald Forsha Jones and published by . This book was released on 1935 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Improvement of Naturally Cross polinated Plants by Selection in Self fertilized Lines I The Production of Inbred Strains of Corn written by D. F. Jones and published by . This book was released on 1925 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Improvement of Naturally Cross pollinated Plants by Selection in Self fertilized Lines written by Willard Ralph Singleton and published by . This book was released on 1945 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improvement of Naturally Crossed Pollinated Plants by Selection in Self Fertilized Lines 4 Combining Ability of Successive Generations of Inbred Sweet Corn written by Connecticut Agricultural Experiment Station and published by . This book was released on 1945 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the American Society of Agronomy written by American Society of Agronomy and published by . This book was released on 1926 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt: An international journal of agriculture and natural resource sciences.
Download or read book Report of the State Entomologist of Connecticut for the Year written by Connecticut. Office of State Entomologist and published by . This book was released on 1925 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by Connecticut Agricultural Experiment Station and published by . This book was released on 1925 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of the Connecticut Agricultural Experiment Station New Haven Conn for the Year written by Connecticut Agricultural Experiment Station and published by . This book was released on 1925 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Note written by and published by . This book was released on 1926 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bud Selection in the Valencia Orange written by Archibald Dixon Shamel and published by . This book was released on 1930 with total page 1472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by Connecticut Agricultural Experiment Station and published by . This book was released on 1929 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 41- 1916/17- include the Station's Bulletin and other of Its publications which are also issued separately.
Download or read book Genetics in Relation to Agriculture written by Ernest Brown Babcock and published by . This book was released on 1927 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals; Scope, methods, and applications of genetics; Phisical basis; Development; Reproduction; Heredity; Mendelian method; Segregation; Mendelian conceptions; Sex linkage or heterosomal inheritance; Heterozygous expressions; Lethal factors; Multiple allelomorphism; Sex-limited characters; Independent assortment; Factor interactions in development; Linkage; The organization of linkage groups; Variation; The statistics of variation; Developmental variation; Quantitative characters; Pure lines and clones; Selection; Factor mutation; Parallel variation; Chromosomal variation; Sectional variation; The oenothera investigations; Interspecific hybridization; Plant breeding; Varieties; Chimeras; Clonal selection; Pure-line selection; Selection in cross-fertilized plants; The utilization of hybrid vigor; Breeding new varieties by hybridization; Breeding disease-resistant plants; Plant-breeding methods; Animal breeding; Mendelian applications; Acquired characters; Animal hybrids; Selection; Sex; Defect and disease; Inbreeding; Fertility and vigor; Breeding methods.
