2 edition of Combining-ability determinations for incomplete mating designs found in the catalog.
Combining-ability determinations for incomplete mating designs
E. B. Snyder
by U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station in New Orleans, La
Written in English
|Statement||E. B. Snyder.|
|Series||USDA Forest Service general technical report SO ; 9, Forest Service general technical report SO -- 9.|
|Contributions||Southern Forest Experiment Station (New Orleans, La.)|
|The Physical Object|
|Pagination||12 p. ;|
|Number of Pages||12|
The incomplete factorial mating designs for the market segments LS, SS, and MM differed in the number of non-phenotyped hybrids (Additional file 1: Figure S4). Nevertheless, this should not bias the estimates of the variance components as we can assume missing at random (Little and Rubin ). Information about combining ability is important for making breeding strategies. Fifteen parents involving Line × tester mating design to was carried out identify superior parental lines and crosses on the basis of their combining ability. GCA effects were highly significant for all traits. Data were recorded on ten morphological and three quality traits.
Diallel mating design is used to evaluate several inbred lines in terms of combining ability variances and effects Diallel cross refers to mating of 25 16 Partial Diallel Crosses in Incomplete Blocks, 32 Construction of Mating–Environment Designs, 33 Download Books Analysis Of Diallel Mating Designs Nc State University. Journal of Biology, Agriculture and Healthcare ISSN (Paper) ISSN X (Online) Vol.4, No, Top Cross Analysis of Maize (Zea mays L) .
same for all ﬁelds. This book tends towards examples from behavioral and social sciences, but includes a full range of examples. In truth, a better title for the course is Experimental Design and Analysis, and that is the title of this book. Experimental Design and Statistical Analysis go hand in hand, and neither can be understood without. mating is useful for preparing conceptual estimates based on assumptions of key building parameters or estimates based upon early designs. As with square-foot estimates and as-sembly estimates that use broad assemblies, care must be taken to ensure that the proposed project is similar to the projects from which the equation has been derived.
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Get this from a library. Combining-ability determinations for incomplete mating designs. [E B Snyder; Southern Forest Experiment Station (New Orleans, La.)] -- "It is shown how general combining ability values (GCA's) from cross- open- and self-pollinated progeny can be derived in a single analysis.
Breeding values are employed to facilitate explaining. A FORTRAN computer program also includes computation of specific combining ability values and several options. Citation: Snyder, E.B. Combining-Ability Determinations for Incomplete Mating by: 4. combining ability is an estimation of the value of genotypes Combining-ability determinations for incomplete mating designs book the basis of their offspring performance in some definite mating design.3 It can seldom be envisaged only based on parental phenotype and thus it is measured by progeny testing.
When parental plants produce potent offspring, they are said to have good combining ability.4File Size: KB. SNYDER, E. (): Combining-ability determinations for incomplete mating designs. USDA Forest Service, Southern Forest Experiment Station, General Technical Report SO SNYDER, E.
and G. NAMKOONG (): Inheritance in a Author: Chunfa Tong, Guangxin Liu, Liwei Yang, Jisen Shi. Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link) http Author: E.
Snyder. An incomplete diallel design was utilized for the objective of this study. The following three mating combinations were arranged, i.e., Guantan ♂ × Dapu ♀, Guantan ♂ × Yanghe ♀, and Dapu ♂ × Yanghe ♀.
Matings were carried out in 12 polyethylene tanks ( cm × cm × 60 cm), with water depth 20 cm and water temperature The diallel mating design has been used successfully for over 50 years in plant breeding to estimate the relative combining ability of lines.
From the diallel mating design, plant breeders can estimate general combining ability (GCA) and specific combining ability (SCA). Sprague and Tatum (). Mating design refers to the procedure of producing the progenies, in plant breeding, plant breeders and geneticists, theoretically and practically, they use different form of mating designs and.
In this book, we have proposed incomplete block designs for CDC system IV with an unequal number of replications for crosses through two-associate classes of a partially balanced incomplete block.
As with the line × tester design, the NC II mating design is a factorial experiment that measures the variance of male and female main effects and male × female interaction effect. 98 According to Hallauer & Miranda, 58 male and female main effects, and the male × female interaction effects in a NC II mating design are equivalent to the GCA.
Incomplete Pedigree design: Incomplete Pedigree design Open pollinate mating design- Allowed to mate at random through open pollination Seed collected from mother tree are kept separate by family Advantage General combining ability estimated- roguing poor family Advanced generation selection can be made Can provide additive genetic variance and heritability value Disadvantage Specific.
An 8 x 8 diallel cross mating design with the parents and F1s was used to estimate gene action and combining ability for yield and yield characters in sesame (Sesamum indicum L.).
The experiment was conducted at the National Semi-Arid Resources Research Institute (NaSARRI), Serere, Uganda during the second season of The traits involved: days to 50% flowering, days to maturity, height to.
The mating design gives information on type and amount of gene action, heritability, effects of combining ability, amount and type of heterosis for different traits Previous research has reported the use of the line by tester mating design in the estimation of combining ability and heterosis in quantitative genetic studies in maize J.
Gai, J. He, in Brenner's Encyclopedia of Genetics (Second Edition), Utilization in Plant Breeding. In plant breeding for utilization of hybrid vigor, test cross is extensively used for testing the combining ability of parental lines. In this case, the parental lines to be tested are usually inbred lines and the tester is usually an inbred line or a hybrid between two inbred lines.
Shah L, Rahman HU, Ali A, Bazai NA, Tahir M () Combining ability estimates from line X tester mating design in maize (Zea mays L.). J Agric Sci and Rsrch Dagne W, Vivek BS, Tadesse B, Abdissa K, Worku M, Legesse W () Combining ability and heterotic relationships between CIMMYT and Ethiopan inbred lines.
J Agric Sci Pedigree Reconstruction/Mating Design Assembly. The partial pedigree reconstruction allowed direct estimation of gene flow, selfing rate, male reproductive success, and the number and/or size of maternal and paternal half-sib families on the individual as well as the population level (Figure 1).With 95% confidence, 1, out of 1, (%) fingerprinted offspring were assigned to male.
General combining ability (GCA) is directly related to the breeding value of a parent and is associated with additive genetic effects, while specific combining ability (SCA) is the relative performance of a cross that is associated with non-additive gene action, predominantly contributed by dominance, epistasis, or genotype × environment.
One can only agree with Hallauer and () when they state that the ‘diallel mating design has been used and abused more extensively than any other ’. Much of the controversy surrounding it stems from the nature of the population under test and the type of analysis required (Wright, ).
Introduction. Mating design play very important role to study the genetic properties of a set of inbred lines in plant breeding experiments.
Most commonly used mating designs are diallel or a two-way cross (m = 2).Suppose there are p inbred lines and it is desired to perform a diallel cross experiment involving v = p (p-1) / 2 crosses of the type (i × j) = (j × i) for i, j = 1, 2.
Mating Designs •The term ‘mating design’ refers to the mating of parents –in one or another systematic plan of crosses –to determine genetic parameters and/or parental value. •Diallel and North Carolina design II mating schemes are two examples of systematic matings that breeders use to –identify superior progenitors, and.
Methionine is a limiting amino acid in poultry diets, so methionine supplementation is typically required to meet nutritional demands. Maize (Zea mays L.) varieties with increased methionine levels h.Experimental material consisted of 26 hybrids obtained in line × tester mating design involving two cytoplasmic male sterile (CMS) lines having A 4 cytoplasm (C.
cajanifolius) viz., ICPA and ICPA and 13 testers viz., Asha, Azad, C 11, ICPICPICPICPRICPRICPRKAMA 6 and NDA 1. Waterlogging tolerance (WT) is a major objective in chrysanthemum breeding programs, and although certain genotypes with different tolerance levels have been identified, their value as parents for WT breeding is unknown.
Here, twelve F1 crosses derived from an incomplete diallel mating scheme were conducted to investigate combining ability and heterosis for WT and their relationships with.