Download or read book A Statistical Evaluation of Early Generation Testing in a Barley Cross Using Related F3 F4 and F5 Lines Grown Simultaneously written by Glenn Arthur Peterson and published by . This book was released on 1957 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts written by and published by . This book was released on 1957-05 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstracts of dissertations and monographs in microform.
Download or read book Inheritance of Heading Date in a Spring winter Barley Cross as Determined by a Partitioning Method written by Clyde Lewis Hart and published by . This book was released on 1960 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agronomy and Plant Genetics at the University of Minnesota written by and published by . This book was released on 2000 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1970 with total page 1248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index 1861 1972 Agriculture written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1957 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Register of Ph D Degrees Conferred by the University of Minnesota written by University of Minnesota and published by . This book was released on 1956 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Register of Ph D Degrees Conferred by the University of Minnesota 1938 June 1956 written by and published by . This book was released on 1957 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Progress Report Annual Meeting written by Malting Barley Improvement Association and published by . This book was released on 1957 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Union Catalog written by and published by . This book was released on 1983 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1957 with total page 1188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1957 with total page 1498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index 1861 1972 Author index written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparison of F3 Lines and Their Related F7 Lines for Certain Yield and Quality Characteristics in Two Barley Crosses written by James Raymond Wilcox and published by . This book was released on 1959 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Early Generation Testing in a Diallel Cross Involving Four Winter Wheat Cultivars Triticum Aestivum Vill Host written by Abderrazak Daaloul and published by . This book was released on 1972 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Factors which influence the effectiveness of making early generation selections within bulk populations were investigated. Material utilized included the parents, F1, and F2 through F5 bulk populations resulting from a diallel cross. Information concerning the response of two traits, plant height and grain yield, was obtained for these populations at three diverse experimental sites. Estimates of gene action were determined by calculating heterosis, inbreeding depression, narrow-sense heritability, and combining ability values. Results obtained suggested that selections for plant height could be effectively made as early as the F2 generation since this trait was largely controlled by additive gene action. Grain yield was found to be influenced significantly by non-additive gene action; however most populations were stabilized by the F3 generations where high yielding populations could be identified and effective selection practiced. Results from this study suggested that genotype x environment interaction could influence early generation selection by masking the additive genetic effects. Under very favorable growing conditions the non-additive gene action x environment interaction dominated the additive effects for grain yield and to a lesser degree plant height. However, under dry land conditions both non-additive and additive genetic effects were masked by the environment and could not be expressed fully for grain yield. It is evident that for simply inherited traits like plant height, selection in the F2 generation must be practiced under an environment where there is full expression for that trait, while selection for grain yield must be conducted under the same environments where the potential varieties are to be grown. The use of Average Combining Ability as an indirect method to evaluate the contribution of parents to performance of the progency was found to be valid by the predicted results obtained for the simply inherited trait plant height. This method could be used with some confidence to estimate contribution of parents for a complex trait like grain yield. Two parents were identified as the best combiners for grain yield. This confirms what was learned about them after fifteen years of actual experience indicating the importance of a technique whereby the breeder can determine in a very short period of time which parents to cross and then concentrate his efforts within the more promising segregating populations.
