These populations were used to compare the efficiency of the two methods in order to provide superior genotypes with respect to grain yield and oil content, i.e. Rice Breeding for High Yield by Advanced Single Seed Descent Method of Selection: Malinee Janwan, Tanee Sreewongchai and Prapa Sripichitt: Abstract: Rice improvement for high yield is important to increase productivity of the crop. [McDonald Bright Jumbo] on Amazon.com. The idea of this method was first suggested by Goulden (1941) and subsequently modified by Brim (1960). A breeding procedure used with segregating populations of self-pollinated species in which plants are advanced by single seeds from one generation to the next is referred to as single seed descent method. Handling of segregating generations– backcross method of reeding – its requirements and b applications – procedure for transfer of single dominant gene and procedure for transfer of single recessive gene 16. Single Seed Descent (SSD) describes a protocol utilized during the inbreeding of populations of self-and cross-pollinated species in the development of homozygous lines. This method is modification of bulk method. The material can be rapidly advanced by growing the same in green house. In F7 and F8, selection is practised between progeny and superior progeny are isolated based on preliminary replicated trial. The success of breeding program depends on the choice of best parents and selection method. With the bulk method, however, no control is exercised over the contribution which each plant in the population makes to the next generation, whereas, with single seed descent, each F2 plant contributes exactly one de- scendant to the next and subsequent generations. Topic 29. The multiple seed procedure entails selecting 2–4 seeds per plant, bulking and splitting the bulk into two, one for planting the next generation, and the other half held as reserve. Similarly F3, F4, F5 generation when the plants are homozygous plant progenies are advanced to next generation. In F6 large numbers of single plants (400-500) are selected and their progeny are grown separately. This paper reports the development of an RGA technology that integrates the germination of immature seeds with single seed descent method of breeding. The results showed that immature 35‐day‐old seeds can be used successfully to turn over a generation of pigeonpea with 100% seed germination. Topic 24. This process is generally continued upto F5 generation. … But the modification is in such a way that it allows the equal survival of a segregates. The method is more useful when several generations can be grown per year. Four populations of linseed derived from five parents were advanced from the F2 to the F6 generation by SSD and to the F5 by pedigree selection. We compared four breeding methods, conventional Germplasm Enhancement of Maize (CG), conventional mass (CM), modified single seed descent (MSSD), and doubled haploid (DH) methods, for their relative capacity to produce superior maize inbred lines and hybrids from three GEM breeding crosses: (ANTIG01 × N16) × DE4, (AR16035 × S02) × S09, and (DKXL212 × S09) × S43b. Mail Id- mail2devhingra@gmail.com. Buy Single Seeds 1 Cannabis Seed Per Pack Single Seeds is proud to offer you premium cannabis seed connections. See our Privacy Policy and User Agreement for details. Single seed descent method can be used for quantitative traits selection because elite lines can selected, wide range of trait variation and high transgressive segregation are produced. Topic 19. Introduction There are several main breeding methods to develop new varieties for self-pollinated crops: pedigree, bulk, modi-fied bulk, single seed descent (SSD) and doubled haploid (DH) (Mackill et al., 1996; Poehlman & Sleper, 1995; Sharma, Single Seed Descent, and Doubled Haploid Breeding Methods for Maize Inbred Line Development Using Germplasm Enhancement of Maize Breeding Crosses McDonald Jumbo, Teclemariam Weldekidan, James B. Holland, and James A. Hawk* ABSTRACT Breeding crosses from the Germplasm Enhance-ment of Maize (GEM) project between exotic This method was suggested by Goulden (1939) for advancing segregating generation of self-pollinated crops. The F 2-derived-family method involved elimination of low-yielding F 2-derived families in replicated yield trials in … method should be implemented for routine rice breeding in order to improve breeding efficiency. Individual plant selection is then conducted. Genetics Congress) although he did not use the term ‘Single Seed Descent’. This method was suggested by Goulden (1939) for advancing segregating generation of self-pollinated crops. Single seed descent can be used in self or cross pollinated crops. It provides a way to speed up the development of inbred lines and reduces the time, 3. Hetrosis breeding 3. Rapid generation advance (RGA) with single seed descent is an effective tool for rice breeders. Comparison of conventional, modified single seed descent, and doubled haploid breeding methods for maize inbred line development using GEM breeding crosses. Comparison of conventional, modified single seed descent, and doubled haploid breeding methods for maize inbred line development using GEM breeding crosses. But the modification is in such a way that it allows the equal survival of a segregates. 3. Several breeding methods are available to plant breeders for germplasm improvement, such as the pedigree method, bulk method, single seed descent, backcross method, and recurrent selection. The modified pedigree breeding method involves the evaluation and selection of parents and hybridization to provide useful gene recombinations. A breeding procedure used with segregating populations of self-pollinated species in which plants are advanced by single seeds from one generation to the next is referred to as single seed descent method. The single-seed descent (SSD) method has been successfully used in oat breeding. 3. Meaning of Single Seed Descent Method: A breeding procedure used with segregating populations of self-pollinated species in which plants are advanced by single seeds from one generation to the next is referred to as single seed descent method. ALLAHABAD-211007 Thus many superior plants may be lost. There is no need of keeping much record in this method. ! Topic 31. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Topic 25. The single seed descent method, proposed by Goulden (1939) and later modified by Grafius (1965), as a modification of the bulk breeding scheme, appears to have the characteristics to overcome the Pedigree selection was the most effective simulated selection method at high (75%) and moderate (50%) heritabilities. Later on this method was applied by Grafius (1965) in oats, Brim (1966) in soybean, and several other workers in soybean, wheat, barley oats, rice, chickpea, green-gram and some other crops. If you're tired in only being able to buy a 10 pack or bulk cannabis seeds of 100, 500 or 1000, then you've come to the right seed bank. From each of the selected plants, F3 seeds are harvested, bulked and planted. *FREE* shipping on qualifying offers. Comparison of conventional, modified single seed descent, and doubled haploid breeding methods for maize inbred line development using GEM breeding crosses. This is a simple, convenient, less expensive and time saving method. The identity of superior F1 plants cannot be maintained in this method, their identity is lost. Example sentences with "single seed descent method", translation memory. TECHNOLOGY AND SCIENCES Ans. [McDonald Bright Jumbo] on Amazon.com. It is a method of inbreeding a segregating population that is quite conducive to environments that are not typical good news for off-season nurseries!! Advantages, disadvantages and applications of the bulk method are listed on the page Bulk method – advantages and applications.Know them in detail. In the second procedure, the F 3 lines were yield‐tested and a pedigree method followed in the F 3 and F 4 (YT Objective 2. If you continue browsing the site, you agree to the use of cookies on this website. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The procedure described so far is the classic single seed descent breeding method. The parents used in this experiment were chosen because they are commonly used cultivars in the desert and represent the phenotypic extremes in terms of their hydrotime characteristics. One seed per Pedigree selection was the most effective simulated selection method … Giga-fren. In this article we will discuss about:- 1. This method involves less record keeping ( pedigree method) and works better where the main focus is on improvement of quantitative … 3 Goulden (1941) proposed a similar system (without Breeders must carefully consider which method will be the most effective for their purposes. oil yield. This method is able to retain considerable variability in a breeding population. We will develop F8 RILs through single seed descent by growing plants in a glasshouse. 有性杂交后代的选择 1、系谱法(pedigree method) 2、单子传代法(single seed descent) 3、混合法(bulk-population method)。 基于8个网页-相关网页 The single seed descent method: When the seeds harvested from a single F4 plant is bulked to constitute an F4:5 inbred line: 1. Single seed descent method is the modification of bulk method of breeding. Topic 27. 1. Shashidhar; It speeds up the breeding cycle, increases the number of favorable genotypes, and reduces breeding costs. Central Superior Services (CSS) MCQs, Group E MCQs, Agriculture and Forestry MCQs, Agriculture Genetics Plant Breeding and Biotechnology MCQs, Giber (1953) , Goulden (9139) , Simmonds (1979) , Brim (1966) The procedure described so far is the classic single seed descent breeding method. Instead of bulking whole seed lot of selected plants, a single seed is selected randomly from each selected plant to make bulk. The single seed descent (SSD) method of inbreeding minimizes the amount of genetic sampling. The multiple seed procedure entails selecting 2–4 seeds per plant, bulking and splitting the bulk into two, one for planting the next generation, and the other half held as reserve. In one procedure, a single seed was taken from each F 2 plant to produce the F 3 generation, the process was repeated for the F 4. Individual plant selection is then conducted. Single seed descent method: B. Diallel selective mating: C. Pedigree method: D. Bulk method: View Answer Workspace Report Discuss in Forum. Single Seed Descent (SSD) This method is modification of bulk method. Back cross method 8. One seed per The F 5 lines were then produced from the seed of individual F 4 plants (single seed descent method, SSD). Comparative efficiency of pedigree, modified bulk and single seed descent breeding methods of selection for developing high-yielding lines in rice (Oryza sativa L.) under aerobic condition [2011] Adnan Kanbar, Katsuhiko Kondo and H.E. Breeders must carefully consider which method will be the most effective for their purposes. This study was conducted to compare the effectiveness between the pedigree selection (PS) and single seed descent (SSD) methods in two yardlong bean crosses. soybeans, peanut, spring-sown small grains). The frequency of getting desirable genotypes in the advanced generation is reduced in this method. GPB 232, Single seed descent method, procedure of SSD, Merits and demerits of SSD Prof. Gharge P. V. Large number of crosses can be evaluated by this method, because less space and labour is required in each generation. Quiz. However, for soybean [Glycine max (L.) Merr. The bulk method is similar to single seed descent in that selection was delayed until plants, at F5, were more or less homozygous. Mass, F 2-derived-family, and single-seed-descent (SSD) selection methods were compared in an interracial population (ICA Pijao × Pinto UI 114) of common bean (Phaseolus vulgaris L.). The F 5 lines were then produced from the seed of individual F 4 plants (single seed descent method, SSD). Instead of bulking whole seed lot of selected plants, a single seed is selected randomly from each selected plant to make bulk. Topic 30. Single seed descent method was first suggested by? We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. of Illinois spring oat breeding program (Cisar et al., 1982). The selected seed is bulked and is used to grow the next generation. Symbols for basic crosses F: The symbol F (for filial) denotes the progeny of a cross between two parents. A different approach to reduce the number of genotypes to screen for new useful traits to use in breeding programs while maintaining a good representation of the genetic background, is the constitution of a working durum wheat collection selected by mean of a single seed descent (SSD) approach so far called SSD genotypes. 3 Goulden (1941) proposed a similar system (without The effectiveness of the single seed descent (SSD) method will be assessed by making top crosses of SSD progenies, and progenies derived from conventional GEM protocol. The single seed descent method: When the seeds harvested from a single F4 plant is bulked to constitute an F4:5 inbred line: 1. In this method, only one seed is selected randomly from each plant in F1 and subsequent generations. The concept was first proposed by C.H. Now customize the name of a clipboard to store your clips. This method is applicable to self-pollinated crops only. Comparison of conventional, modified single seed descent, and doubled haploid breeding methods for maize inbred line development using GEM breeding crosses. 1. Comparison of mass, F2-derived family, and single-seed'descent seleition methods in an interracial population of common bean Carlos A. Urrea and Shree P. Singh Centro lnternacionat de Agricultura Tropical, A.A.6713, Cati, Colombia.Received ll December 1993, accePted 14 February 1994' Urrea, C.A. It is a means to maintain descendants of as many F2 plants as possible, 2. Topic 21. Topic 22. Visit SSD – Single Seed Descent Method. The superior progeny are then tested in multi-location trials and the best progeny is identified for release. Advantages and Disadvantages of SSD Method. It provides a way to speed up the development of inbred lines and reduces the time, 3. Single Seed Descent (SSD) Procedure for Single Seed Descent Method. A modified pedigree breeding method is used to evaluate ~225 to 275 segregating populations each year. In the second procedure, the F 3 lines were yield‐tested and a pedigree method followed in the F 3 and F 4 (YT method). It is a method of inbreeding a segregating population that is quite conducive to environments that are not typical : good news for off-season nurseries! In this case, three-way crosses are used where the … Clipping is a handy way to collect important slides you want to go back to later. Title: Single Seed Descent 1 Single Seed Descent 2 SSD. 3. A large wealth of genetic diversity is present in the diversity centers of durum wheat. The single-pod descent (SPD) and bulk methods (BM) produce redundant inbred lines that are descended from either the same F-2 or F-3 plant. overcome by adopting single seed / capsule descent method (SCD) proposed by Goulden (1939), in which single seed / capsule from every F 2 plant is composited to raise F 3 and this method of selection is continued until homozygosity is reached. achievements of bulk method– comparison between pedigree and bulk method – single seed descent method 15. Single Seed Descent Method (Source Acquaah, 2006) Action Grow F1 plants, harvest all F2 seeds per plant Grow F2 population, harvest one seed per plant Grow F3 population, harvest one seed per plant Grow F4 population, harvest one seed per plant Space-plant to grow F5, select best single plants Grow F5-derived plant rows In the Topic 20. The initial population of this study was a BC2F1from … Single seed descent method This method is amodification of bulk method . This method does not provide opportunity to practise selection for superior plants till F5 generation. RGA is a breeding approach that uses single seed descent (SSD) as the breeding method in a small screenhouse or glasshouse space. Looks like you’ve clipped this slide to already. SAM HIGGINBOTTOM INSTITUTE OF AGRICULTURE What is single seed descent method? Central Superior Services (CSS) MCQs, Group E MCQs, Agriculture and Forestry MCQs, Agriculture Genetics Plant Breeding and Biotechnology MCQs, Giber (1953) , Goulden (9139) , Simmonds (1979) , Brim (1966)