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Josefa Grasiela Silva Santana; Helaine Christine Cancela Ramos; Daniel Pereira Miranda; Renato Santa Catarina; Julio Cesar Fiorio Vettorazzi; Tathianne Pastana de Sousa Poltronieri; Rafaela Pereira Duarte; Adriana Azevedo Vimercati Pirovani; Dieimes Bohry; Antonio Teixeira do Amaral Júnior; Messias Gonzaga Pereira
Carica papaya; alleles; computer software; crossing; data collection; fruit quality; fruit weight; fruits; genotype; heterosis; ideotypes; markets; papayas; pulp
Abstract:
... Papaya is one of the most important fruit crops worldwide and its production depends on the availability of varieties that meet the consumer market demands. This study aimed to evaluate papaya inbred lines and select the best lines for fruit quality. A population of 97 lines of F₅ generation, that was conducted via Single Seed Descent method from the F₂ generation and derived from the crossing bet ...
... Fruit shape index (round shape) and seed size have important effects on pumpkin yield. To investigate these traits and to create the most desirable state, a cross was made between two pumpkin cultivars. This study aimed to estimate the main gene effects (additive, dominant and di-genic epistasis) and to determine the mode of inheritance for fruit shape and seed size by generation mean analysis. Si ...
Long Thien Tran; Anh Tuan Nguyen; Minh Hong Nguyen; Long Tien Nguyen; Minh Thi Nguyen; Lai Thi Trinh; Dieu-Thuy Thi Tran; Sang Viet Ta; Ken Hoshikawa; Koichi Sugimoto; Hiroshi Ezura
brix; crossing; cultivars; fruit weight; fruit yield; leaves; mutants; mutation; parthenocarpy; pericarp; pollen; potatoes; self-pollination; tomatoes
Abstract:
... A number of different strategies have been utilized to introduce parthenocarpy into tomato commercial cultivars. In this study, we evaluated three segregating populations (F₂, F₃, and F₄) derived from conventional crossing between iaa9-3 mutant in Micro-Tom and an inbred pure tomato line V62. The mutation caused potato leaf style and high parthenocarpic fruit set ratio (nearly 90%). Introducing ia ...
... In China, ninety percent of the varieties of V. vinifera are protected from the cold by burying the vines for safe over-wintering, a labor-intensive practice that restricts the sustainable development of the grape and wine industry. An alternative solution is to breed cold-resistant varieties that can tolerate the local climatic conditions. The conventional cold-resistant breeding of grapes worldw ...
Ramon de Moraes; Marcelo Vivas; Derivaldo Pureza da Cruz; Renato Santa-Catarina; Rafael Nunes de Almeida; Yure Pequeno de Souza; Rogério Figueiredo Daher; Alexandre Pio Viana; Messias Gonzaga Pereira
... Papaya has a narrow genetic base concerning disease resistance, with few genetically distinct cultivars for planting in the world. Losses in crop production caused by fungal and viral diseases, added to the absence of resistant cultivars available to producers, have reduced the competitiveness of crops. Therefore, this study aimed to select promising individuals for resistance to phoma spot and bl ...
... Phenology is an important trait for the adaption of chickpea (Cicer arietinum L.) to various target environments. The aim of this study was to determine the effects of flowering time on other phenological traits and yield-related traits. F₂ and F₃ segregating populations derived from the crosses of four early-flowering lines (ICCV 96029, ICC 5810, BGD 132 and ICC 16641) with a late-flowering culti ...
... Population improvement in maize (Zea mays L.) aims to increase favorable allele frequencies yet maintain genetic variability. The direction of future population improvement has usually been determined by evaluating the performance of maize populations after several cycles of selection. However, relatively few studies have been conducted to understand in advance the breeding potential of inbred lin ...
Renata C. Alvares; Robert Stonehouse; Thiago L. P. O. Souza; Patrícia G. S. Melo; Phillip N. Miklas; Kirstin E. Bett; Leonardo C. Melo; Luana A. Rodrigues; Lorena L. Souza; Helton S. Pereira
... Slow darkening (SD) is a trait that helps to maintain a brighter seed coat appearance in certain market classes of dry beans. The aim of this study was to generate new fluorescence-based markers and validate previously identified microsatellite markers for linkage to the SD trait in lines of the carioca market class. Four segregating populations were generated by Embrapa, the Brazilian Agricultura ...
... This research evaluated the potential for using sexual crosses for genetic improvement of fiber yield, lint percent, AFIS fiber quality, and fiber initiation of two naked-tufted mutants of cotton (Gossypium hirsutum L.). The naked tufted lines were crossed with ten fuzzy breeding lines to generate 10 F₂ populations. The F₂ distributions were tested with Chi Square for Goodness of Fit to two monoge ...
... As consumers look for healthier dietary alternatives, many have recognized soybean [Glycine max (L.) Merrill] as a prominent source of high quality protein. The major obstacles to developing commercially competitive high protein food-grade soybean cultivars are the complex inheritance of seed protein concentration and its inverse association with yield. A better understanding of the genetic backgr ...
... Flowering time and seed size are the important traits for adaptation in chickpea. Early phenology (time of flowering, podding and maturity) enhance chickpea adaptation to short season environments. Along with a trait of consumer preference, seed size has also been considered as an important factor for subsequent plant growth parameters including germination, seedling vigour and seedling mass. Smal ...
... Interploid crosses display a common approach in plant breeding to vary ploidy level in crops. This research included three trials to determine ploidy purity and genomic stability of diploid, triploid and auto-tetraploid varieties of German chamomile during life-time and across generations after interploid crosses. Impacts of auxin application were evaluated for seed set, germination rate and proge ...
... Designed crosses using genetically diverse and complementary genotypes is useful to develop sweetpotato clones with improved agronomic traits. The objective of this study was to determine combining ability and heterosis among selected sweetpotato clones for number of storage roots per plant (NRPP), storage root yield (SRY), dry matter content (DMC) and resistance to sweetpotato virus disease (SPVD ...
... Soybean (Glycine max (L) Merr.) seed is an important source of oil for human consumption. Increasing the percentage of oleic acid in soybean seed oil is an important breeding objective because increasing the oleic acid content improves the oxidative stability of the oil. Extensive literature shows that temperature during seed-fill is positively correlated with the content of oleic acid in soybeans ...
Erica; amplified fragment length polymorphism; cluster analysis; crossing; flowering; genetic markers; genetic variation; genotype; mutants; open pollination; plant breeding; pollen tubes; seeds; Northern European region; South Africa
Abstract:
... Erica gracilis is an important bedding plant in Northern Europe. Due to self-incompatibility, the development of new varieties was largely based on mutant selection from the predominant variety ’Glasers Rote‘. By crossing ’Glasers Rote‘ with wild types from South Africa in the 1980th, new cross-based varieties arose. Since the cultivation of cross-based varieties, precocious floral withering has b ...
... Salt stress represents a major impediment to global wheat production. Development of wheat varieties that offer tolerance to salt stress would increase productivity. Here we report on the results of a genetic study of salt tolerance in bread wheat across multiple genetic backgrounds and environments, with the goal of identifying quantitative trait loci (QTLs) for 9 yield-related traits that are bo ...
... Estimates of genetic diversity based on molecular and morphological data are common in the literature; however, they do not take the most agronomically important traits into consideration. Use of these estimates for recommending parent lines has not had much practical success because the populations thus generated generally exhibit wide variability, but medium to low means for the target trait. A ...
... This study was conducted to assess genetic potential of smooth bromegrass for water stress and to identify the association among different seed and forage production related traits. Thirty-six genotypes were clonally propagated and evaluated in the field under two moisture environments (normal irrigation and water stress) during 2013–2015. High variation was observed among genotypes for all of the ...
Solanum lycopersicum var. lycopersicum; additive gene effects; alleles; calcium; crossing; dominant genes; fruits; genetic analysis; leaves; loci; major genes; plant breeding; seeds; tomatoes; water stress
Abstract:
... The tomato crop is heavily dependent on irrigation, and water deficits may reduce yields and affect ion transport: calcium (Ca) transport may be affected, resulting in increased incidence of fruit blossom end rot (BER), a physiological disorder that renders fruit useless. Tomato lines were obtained with high levels of tolerance to BER induced by water stress. This paper reports on the inheritance ...
... Successful cross-breeding requires the investigation into the inheritance pattern of desirable traits. The present study recorded the segregation in coloration and analyzed anthocyanin concentration and composition in berry skin and flesh of the F1 interspecific populations (‘Beifeng’ × ‘Yan-73’) during the three successive growing seasons. All the progeny presented color in berry skin, whereas se ...
... Zymoseptoria tritici, the causal agent of Septoria tritici blotch (STB) causes yield losses in wheat of up to 40%, globally. Growing of resistant cultivars is the most cost effective and environmentally friendly way to avoid these losses. Therefore, there is a need to identify new resistances in gene bank accessions and to get information on the genetics of resistance followed by the development o ...
... In most sugarcane cultivation areas, sugarcane brown rust (SBR), caused by Puccinia melanocephala, is an economically important fungal disease that leads to severe yield loss in susceptible cultivars. Bru1, which is the major dominant SBR resistance gene, has been widely used in the prediction of brown rust resistance in sugarcane. In this study, three panels of sugarcane germplasms, the major var ...
... Carrots are typically classified as annual or biennial, depending on their vernalization requirement for flowering, a trait that is genetically-conditioned. Wild carrots are predominantly annual, requiring less hours of cold temperatures for flower induction, whereas most cultivated carrots are biennial (i.e., they have higher cold temperature requirements). After vernalization, if followed by lon ...
... Usually, mapping studies in potato are performed with segregating populations from crosses between highly heterozygous diploid or tetraploid parents. These studies are hampered by a high level of genetic background noise due to the numerous segregating alleles, with a maximum of eight per locus. In the present study, we aimed to increase the mapping efficiency by using progenies from diploid inbre ...
... Leaf scald caused by Rhynchosporium commune (formerly R. secalis) is an important fungal disease in barley (Hordeum vulgare) in western Canada. Pyramiding multiple scald resistance qualitative trait loci (QTL) is considered an effective strategy for breeding durable scald resistance into barley. The objective of this study was to map QTLs with restriction site-associated (RAD) markers and identify ...
... Increasing the frequency of favorable alleles in elite germplasm is necessary for germplasm improvement and innovation in maize (Zea mays L.) breeding programs. Jidan27 (Si287 × Si144), an elite commercial single cross hybrid that represents the predominant heterotic pattern Chinese Sipingtou × Stiff Stalk Synthetic, has been widely cultivated in the Northeast China Corn Belt. However, the use of ...
Ribes nigrum; ascorbic acid; black currants; breeding value; crossing; cultivars; fruit quality; fruit yield; genotype; horticulture; plant breeding; research institutions; seedlings; specific combining ability; total soluble solids; Poland
Abstract:
... The study was conducted in the years from 2011 to 2013 at the Research Institute of Horticulture in Skierniewice, Poland. The aim of the research was to assess the breeding value, based on the effects of general and specific combining abilities (GCA and SCA), of 15 parental genotypes of blackcurrant in terms of fruit yield and quality. The plant material consisted of F₁ generation seedlings obtain ...
Matthew P. Reynolds; Alistair J. D. Pask; William J. E. Hoppitt; Kai Sonder; Sivakumar Sukumaran; Gemma Molero; Carolina Saint Pierre; Thomas Payne; Ravi P. Singh; Hans J. Braun; Fernanda G. Gonzalez; Ignacio I. Terrile; Naresh C. D. Barma; Abdul Hakim; Zhonghu He; Zheru Fan; Dario Novoselovic; Maher Maghraby; Khaled I. M. Gad; ElHusseiny G. Galal; Adel Hagras; Mohamed M. Mohamed; Abdul Fatah A. Morad; Uttam Kumar; Gyanendra P. Singh; Rudra Naik; Ishwar K. Kalappanavar; Suma Biradar; Sakuru V. Sai Prasad; Ravish Chatrath; Indu Sharma; Kishor Panchabhai; Virinder S. Sohu; Gurvinder S. Mavi; Vinod K. Mishra; Arun Balasubramaniam; Mohammad R. Jalal-Kamali; Manoochehr Khodarahmi; Manoochehr Dastfal; Seyed M. Tabib-Ghaffari; Jabbar Jafarby; Ahmad R. Nikzad; Hossein Akbari Moghaddam; Hassan Ghojogh; Asghar Mehraban; Ernesto Solís-Moya; Miguel A. Camacho-Casas; Pedro Figueroa-López; Javier Ireta-Moreno; Jorge I. Alvarado-Padilla; Alberto Borbón-Gracia; Araceli Torres; Yei Nayeli Quiche; Shesh R. Upadhyay; Deepak Pandey; Muhammad Imtiaz; Monsif U. Rehman; Manzoor Hussain; Makhdoom Hussain; Riaz Ud-Din; Maqsood Qamar; Muhammad Sohail; Muhammad Y. Mujahid; Gulzar Ahmad; Abdul J. Khan; Mahboob A. Sial; Pompiliu Mustatea; Eben von Well; Moses Ncala; Stephan de Groot; Abdelraheem H. A. Hussein; Izzat S. A. Tahir; Amani A. M. Idris; Hala M. M. Elamein; Yann Manes; Arun K. Joshi
arabinoxylan; breeding lines; crossing; cultivars; dietary fiber; dough; field experimentation; flour; gluten; grain foods; hardness; nutritive value; parents; plant breeding; processing quality; protein content; seeds; water uptake; wheat
Abstract:
... Improving the nutritional quality and health benefits of food has been of increasing interest globally over the last decade. Staple cereal foods are the major sources of dietary fiber and a recent study identified the Chinese wheat cultivar Yumai-34 as having unusually high levels of water-extractable arabinoxylan (WE-AX) and total arabinoxylan (TOT-AX) in flour. Crosses were therefore made betwee ...
... A plant breeding program is a long-term investment. Therefore, periodic assessment of the effectiveness of a breeding strategy is essential to maximize genetic gains per unit of time and resource invested. In this work, we assessed the effectiveness of the early-generation testing (EGT) approach used in the upland rice (Oryza sativa L.) breeding program at Embrapa (Brazilian Agricultural Research ...
... Cassava (Manihot esculenta Crantz) brown streak disease (CBSD) is currently one of the major constraints to sustained cassava production in Malawi. Its economic impact is mainly manifested in the storage roots where it causes pitting, necrosis and constriction. CBSD can effectively be managed by using resistant varieties as well as early harvesting especially if the varieties are early bulking (hi ...
... Understanding the genetic control of the nitrogen (N) and phosphorus (P) uptake, utilization, and translocation is essential to develop superior popcorn genotypes with high N and P use efficiency. The main objective of this study was to determine the genetic control for N and P uptake, utilization, and translocation efficiency indexes and shoot and root traits under low-N and -P conditions at earl ...
Megalurothrips sjostedti; Vigna unguiculata; abortion (plants); additive gene effects; analysis of variance; buds; cowpeas; crossing; flowering; general combining ability; genes; genetic analysis; genetic variation; genotype; germplasm; heritability; hybrids; inheritance (genetics); models; parents; pest resistance; pests; plant breeding; pods; specific combining ability; yield components; Africa
Abstract:
... Flower bud thrips, Megalurothrips sjostedti is the most severe field pest of cowpea that causes massive flower abortion which eventually results to substantial yield reduction in Africa. There is paucity of information on the mode of gene actions controlling inheritance of resistance to flower bud thrips in cowpea in the literature. The objectives of study were to assess the genetic variability fo ...
... The yellow vein mosaic virus (YVMV) is one of the most serious diseases in okra production, often causing severe losses in commercial fields. Identifying and deploying resistant genotypes and understanding the inheritance of YVMV disease resistance are essential for the okra geneticists to develop an effective breeding strategy. Genetic control of the host resistance to YVMV disease of okra was st ...
... The use of molecular markers to detect polymorphism at DNA level is one of the most significant developments in molecular biology techniques. With the development of new next-generation sequencing technologies, the discovery of SNP became easier and faster, and the costs of data point were reduced. The development and use of SNP markers for coffee have provided new perspectives for the evaluation ...
... Drought is one of the main abiotic stresses in agriculture worldwide. Drought could increase under the predicted scenario of climate change, particularly in the Mediterranean area. Breeding for drought tolerance requires screening of germplasm in order to identify sources of tolerance; therefore, were evaluated 51 diverse open-pollinated maize populations from various temperate regions under incre ...
alleles; crossing; ecoregions; frequency distribution; gene frequency; genetic variation; genome-wide association study; landraces; linkage disequilibrium; loci; oil crops; phenotypic variation; plant breeding; prediction; protein content; quantitative trait loci; single nucleotide polymorphism; soybeans; China
Abstract:
... Soybean originated in ancient China has been quickly extended globally as a major protein and oil crop. The QTL–allele constitution of seed protein content (SPC) in the Chinese soybean landrace population (CSLRP) was studied using a representative sample composed of 365 accessions tested under multiple environments and analysed under the novel restricted two-stage multi-locus genome-wide associati ...
... Little is known about the application of parental molecular information to enhance the performance of synthetic populations of orchardgrass under water deficit environments. In this study, first generation progenies of four polycrossed groups constructed from a combination of several parental genotypes with contrasting levels of diversity (high and low phenotypic, high and low molecular) were asse ...
... Sorghum shoot fly, Atherigona soccata is an important pest of sorghum during the seedling stage, which influences both fodder and grain yield. To understand the nature of inheritance of shoot fly resistance in sorghum, we performed generation mean analysis using two crosses IS 18551 × Swarna and M 35-1 × ICSV 700 during the 2013–2014 cropping seasons. The F₁, F₂, BC₁ and BC₂ progenies, along with ...
... Septoria tritici blotch (STB), caused by fungal agent Zymoseptoria tritici (previously known as Mycosphaerella graminicola) is a devastative foliar wheat diseases globally. Importance and potential threat of STB have been discussed historically and geographically. This paper reviews information on the Z. tritici—wheat pathosystem and proposes approaches to identify resistance genes and to advance ...
... Polyploid breeding offers the possibility of increased variability in the search for improved growth, site adaptation and disease resistance in tropical acacias. A key focus of breeding in Vietnam has been the production and testing of vigorous triploid clones which are expected to have the added advantage of being sterile. Triploids obtained by manual crosses between diploid and tetraploid trees ...
Aurelio Hernández-Bautista; Ricardo Lobato-Ortiz; J. Jesús García-Zavala; Mario Rocandio-Rodríguez; José Apolinar Mejía-Contreras; José Luis Chávez-Servia; José Armando García-Velazquez
Rubus idaeus; agronomic traits; breeding value; crops; crossing; cultivars; general combining ability; genetic distance; genotype; heritability; heterosis; hybrids; open pollination; prediction; progeny; raspberries; specific combining ability
Abstract:
... Previous findings in some crops suggest that parental distance is correlated with heterosis and agronomic performance. However, this pattern is not always evident in the progeny. The present study aimed to assess the relationship of parental distance with the agronomic performance of raspberry families and three estimators based on non-environmental effects: specific combining ability, general com ...
Fragaria ananassa; additive effect; adverse effects; ascorbic acid; breeding value; crossing; cultivars; desserts; field experimentation; firmness; fruit quality; fruit yield; genetic correlation; genotype; greenhouses; horticulture; hybrids; lighting; models; odors; plant breeding; planting; ripening; seedlings; specific combining ability; strawberries; temperature; total soluble solids; winter
Abstract:
... A half-diallel mating design (Griffing’s method IV) among 13 dessert strawberry parental genotypes (‘Figaro’, ‘Salsa’, ‘Palomar’, ‘Granda’, ‘Camarosa’, ‘Elianny’, ‘Aromas’, ‘Diamante’, ‘Portola’, ‘Charlotte’, ‘San Andreas’, ‘Monterey’ and ‘Albion’) was constructed to study the breeding value in terms of general and specific combining ability (GCA and SCA) effecting several important horticultural ...
Zea mays; agronomic traits; climate; corn; crossing; experimental design; farmers; farms; hybrids; inbred lines; industry; parents; plant variety protection; planting; public sector; right of access; summer; Canada; New Zealand; North Dakota
Abstract:
... U.S. Patent and Plant Variety Protection Act protect maize (Zea mays L.) inbreds and hybrids. The overall objective of this research was to assess the usefulness of patent expired maize inbred lines. Factorial crosses were made including North Dakota State University (NDSU) lines, ex-PVP lines, and top industry testers in the 2010 NDSU Fargo summer nursery and in the 2010–2011 NDSU New Zealand win ...
... 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 parental ...
... Based on double pseudo-testcross theory, a population of 79 F₁ clones, which was derived from a crossing of two tea cultivars using a Japanese tea cultivar “Fushun” (Camellia sinensis) as female parent and a Korean tea cultivar “Kemsull” (C. sinensis) as male parent, was applied to construct a genetic linkage map with different molecular markers. Previously, 143 random amplified polymorphism DNA ( ...
... Fiber properties measured by high volume instrument (HVI) and advanced fiber information system (AFIS) are currently being used in Upland cotton (Gossypium hirsutum L.) breeding. It would be interesting to know if it is equally efficient in selection for parameters measured by the two instrumental systems and how are the correlated selection responses of the parameters between the two systems. A s ...
... Bambara groundnut (Vigna subterranea (L) Verdc.) is a drought tolerant underutilised indigenous African legume. The present study aimed to examine the response of bambara groundnut under increasing drought stress and the effects of cumulative mild drought on final yields. The components of morpho-physiological traits were measured for a small F₅ breeding cross of bambara groundnut exposed to progr ...
... Maize (Zea mays L.) is the most important cereal crop produced in Ghana. However, yield of the crop is generally low, producing just about 1.7 t/ha. The low yield is attributed to continuous use of local/unimproved varieties. Generally, hybrid varieties have proven to out-yield the local/unimproved varieties due to improved vigour. Development of hybrid varieties depend on good understanding of co ...
... Interspecific hybrids were developed between Trifolium alexandrinum cultivar Wardan × Trifolium vesiculosum and T. alexandrinum cultivar BL1 × T. vesiculosum through embryo rescue, as the crosses failed to set seed under natural conditions. Trifolium vesiculosum was used as a donor/male parent in this study as it is reported to possess tolerance to stem rot and high forage yield. Fertilization in ...