Download or read book Changes in Genetic Variance After Eleven Cycles of Reciprocal Recurrent Selection in BSSS and BSCB1 Maize Populations written by Bruce John Schnicker and published by . This book was released on 1991 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Breeding Reviews Volume 15 written by Jules Janick and published by John Wiley & Sons. This book was released on 2010-04-22 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Breeding Reviews is an ongoing series presenting state-of-the art review articles on research in plant genetics, especially the breeding of commercially important crops. Articles perform the valuable function of collecting, comparing, and contrasting the primary journal literature in order to form an overview of the topic. This detailed analysis bridges the gap between the specialized researcher and the broader community of plant scientists.
Download or read book Evaluation of 11 Cycles of Reciprocal Recurrent Selection in BSSS and BSCB1 Maize Populations written by Vichien Keeratinijakal and published by . This book was released on 1990 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Genetics and Exploitation of Heterosis in Crops written by CIMMYT. and published by CIMMYT. This book was released on 1997 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Breeding Abstracts written by and published by . This book was released on 1996-07 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Selection for Reduced Plant Height in a Tropical Maize Population written by Alfred Joseph Moshi and published by . This book was released on 1982 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response to Thirteen Cycles of Reciprocal Full Sib Recurrent Selection in the BS10 and BS11 Maize Zea Mays L Populations written by Benjamin Aaron Ford and published by . This book was released on 2001 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increases in grain yield, the primary trait for selection, include a direct response of 2.2 percent per cycle in the population cross, and indirect responses of 3.3 and 1.2 percent per cycle in BS10 and BS11, respectively, but only the response for BS11 fits a linear model. Linear trends through the first nine selection cycles, however, indicate a 4.6 percent per cycle increase for the population cross, as well as increases of 1.6 percent in BS10 and 1.6 percent in BS11 parent populations. Evaluations of random S1 line performance for BS10CO, BS10C13, BS11CO, and BS11C13 indicate decreasing trends in genetic variability over 13 cycles of FR. Exceptions are grain yield in BS10 and BS11 and plant height in BS11. While genetic variance estimates for grain yield are nearly equal for BS11CO and BS11C13, a nearly significant increase in variability is evident from BS10CO to BS10C13. Variability estimates suggest FR for grain yield in BS10 and BS11 will be effective in future selection cycles.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1979 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Genotyping From Traditional Markers to Modern Technologies written by Yuri Shavrukov and published by Frontiers Media SA. This book was released on 2024-05-09 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: In contrast to the external traits of plants, we cannot directly see the genotypes that comprise the underlying set of genetic material encoding these phenotypic traits. To make genotypes accessible for research and further understanding, various genotyping methods are used. Plant genotyping began with relatively simple and elementary molecular markers, like microsatellites or SSR (Simple Sequence Repeats), which were then followed by DNA sequencing and fragment analysis, PCR and qPCR, allele-specific molecular probes and primers, and now today’s modern and advanced microchip-DNA technology involving hundreds and thousands of reactions simultaneously.
Download or read book Effects of a Long term Recurrent Selection Program on the Genetic Structure of the BSSS Maize Population written by Paulo Evaristo de Oliveira Guimarães and published by . This book was released on 2001 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluating of Recurrent Selection (RS) programs can lead to increase knowledge of methods, populations, and traits and give support for better management of breeding programs. The objective herein was to evaluate the effects of seven cycles of half-sib selection followed by seven cycles of S2 selection on the genetic structure of BSSS maize population. Individuals from BSSSP (progenitor lines), BS13(S)CO (original S2 selection), and BS13(S)C7 (7th S2 cycle) cycles were genotyped based on a sample of 105 RFLP loci. Measures of genetic variation within (expected heterozygosity, number of allelles, average frequency of the most common allele, and proportion of polymorphic loci) and among (Principal Component Analysis and Nei's genetic distance, NGD) cycles of selection indicated BSSSP has a considerable genetic variability, substantial loss a variation and increase of divergence over the cycles of selection, greatest loss of diversity occurred during the HS selection program, future cycles of RS are predicted to have narrow genetic variation, and low average effective population size was an important factor in loss of genetic variation. Changes in allele frequencies for about 30% of the loci cannot be explained by genetic drift alone, suggesting that selection also was an important factor of variation. The majority of loci in C0 and C7 were in H-W equilibrium. Progenitor lines Illinois Hy had a lower NGD to C0 and C7 and five of its unique had frequencies significantly increased in later generations, indicating a selective advantage over the cycles of RS. Hybrid Hy x LE 23 showed the lowest NGD to C0 and C7 populations. NGD among parental lines was not a good predictor of single-crosses yield performance. A founder effect observed herein may explain partially reduced genetic gains during the S2-selection period reported in other studies. Limited RFLP diversity in BS13(S)C7 suggests this population may not have enough genetic variability to sustain significant long-term genetic gains per se for grain yield. RFLP data were useful tools to evaluate this RS program. However, much more information could be obtained about recurrent selection programs by integrating of molecular (a standard set of marker loci) and phenotypic data.
Download or read book The Journal of the Iowa Academy of Science written by and published by . This book was released on 2000 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changes in Genetic Variance During Advanced Cycle Breeding in Maize written by Jianming YU and published by . This book was released on 2003 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Agricultural Index written by and published by . This book was released on 1980 with total page 1770 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response to Full sib Reciprocal Recurrent Selection in a Double cross Maize Population written by Eduardo J. Graterol M. and published by . This book was released on 2005 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Two Maize Populations After Eight Cycles of Reciprocal Recurrent Selection written by Thomas Craig Kevern and published by . This book was released on 1981 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
