scholarly journals Buckwheat Breeding. Past, Present and Future / Žlahtnjenje ajde v preteklosti, sedanjosti in prihodnosti

2020 ◽  
Vol 61 (1) ◽  
pp. 25-36
Author(s):  
Clayton G. Campbell ◽  
Mio Nagano
Keyword(s):  
Crop Improvement ◽  
Value Added ◽  
Fagopyrum Esculentum ◽  
Yield Potential ◽  
Interspecific Crosses ◽  
Flower Number ◽  
Breeding Programs ◽  
Fagopyrum Homotropicum ◽  
The Past ◽  
Nutritional Components

Buckwheat crop improvement by breeding has been taking place over the past 100 years or more. During this time there has been improvements in many desirable agronomic characteristics which has resulted in higher yields in many of the breeding programs. Phenotypic modifications, such as dwarf, semi-dwarf and branching have been reported. There has also been an effort to increase flower number as this has been shown in cross pollinating buckwheat, to increase yields. Flower cluster modifications and their effects on yield have also been studied. Increased reports on the discovery of buckwheat wild species have been reported from several programs with many interspecific crosses having taken place. Several of these crosses were performed with Fagopyrum esculentum in efforts to increase variability which can be used to increase yield potential as well as to obtain increased nutritional components.  More recent efforts have focused on the development of self-pollinating buckwheat, both from introgression of genes from Fagopyrum homotropicum as well as from mutations in cross pollinating buckwheat. The main problem has been in breeding depression which has occurred in many of the reported attempts. However, high yielding homomorphic, self-pollinating varieties have been developed and are now in commercial production. There is now emphasis being placed on many of the nutritional aspects of buckwheat flour as well as value added components. It is expected that this will increase over time.  Key words: Buckwheat breeding, homomorphic, autogamous buckwheat.   Izvleček Žlahtnjenje ajde poteka že več kot 100 let. V tem času je bila dosežena izboljšava željenih agronomskih lastnosti, kar je pri mnogih programih žlahtnjenja omogočilo večje pridelke. Raziskovalci poročajo o fenotipskih modifikacijah, kot je pritlikava ali pol-pritlikava rast in razvejanje. Za povečanje pridelka so bile raziskane modifikacije socvetij. Število poročil o odkritjih divjih sorodnikov ajde in o mnogih medvrstnih križanjih se je v zadnjem času povečalo. V mnoga od teh križanj je bila vključena navadna ajda (Fagopyrum esculentum), da bi povečali  variabilnost, kar bi lahko omogočilo povečanje pridelka in izboljšanje prehranskih lastnosti. Novejša prizadevanja so se osredotočila na razvoj samooplodnosti pri ajdi, z vključitvijo genov vrste Fagopyrum homotropicum, kot tudi mutacij pri ajdi, ki se je opraševala navzkrižno.  Pri tem je bila glavna težava preseči  depresijo zaradi samooploditev, depresija se je pojavila pri večih poskusih samooploditve. Ne glede na to je uspelo dobiti visokorodne homomorfne samooplodne sorte za ponudbo na trgu semen. Sedaj se prizadevanja usmerjajo k izboljšanju prehranske vrednosti ajde in pomembnih sestavin v ajdovi moki. Pričakovati je, da se bo pomen prehranske vrednosti ajde sčasoma še povečeval. Ključne besede: žlahtnjenje ajde, homomorfnost, samo­oplodna ajda

scholarly journals Legume biology: the basis for crop improvement

2013 ◽  
Vol 40 (12) ◽  
pp. v ◽  
Author(s):  
Rajeev K. Varshney ◽  
Himabindu Kudapa
Keyword(s):  
Target Genes ◽  
Crop Improvement ◽  
Crop Productivity ◽  
Food Sources ◽  
Yield Potential ◽  
Systematic Research ◽  
Breeding Programs ◽  
Biotic Stresses ◽  
Legume Crop ◽  
Precise Understanding

Legumes represent the most valued food sources in agriculture after cereals. Despite the advances made in breeding food legumes, there is a need to develop and further improve legume productivity to meet increasing food demand worldwide. Several biotic and abiotic stresses affect legume crop productivity throughout the world. The study of legume genetics, genomics and biology are all important in order to understand the limitations of yield of legume crops and to support our legume breeding programs. With the advent of huge genomic resources and modern technologies, legume research can be directed towards precise understanding of the target genes responsible for controlling important traits for yield potential, and for resistance to abiotic and biotic stresses. Programmed and systematic research will lead to developing high yielding, stress tolerant and early maturing varieties. This issue of Functional Plant Biology is dedicated to ‘Legume Biology’ research covering part of the work presented at VI International Conference on Legume Genetics and Genomics held at Hyderabad, India, in 2012. The 13 contributions cover recent advances in legume research in the context of plant architecture and trait mapping, functional genomics, biotic stress and abiotic stress.

scholarly journals Photosynthesis solutions to enhance productivity

2017 ◽  
Vol 372 (1730) ◽  
pp. 20160374 ◽  
Author(s):  
Christine H. Foyer ◽  
Alexander V. Ruban ◽  
Peter J. Nixon
Keyword(s):  
Grain Yield ◽  
Photosynthetic Efficiency ◽  
Crop Improvement ◽  
Step Change ◽  
Crop Plants ◽  
Light Energy ◽  
Yield Potential ◽  
Carbon Gain ◽  
The Past ◽  
Energy Assimilation

The concept that photosynthesis is a highly inefficient process in terms of conversion of light energy into biomass is embedded in the literature. It is only in the past decade that the processes limiting photosynthetic efficiency have been understood to an extent that allows a step change in our ability to manipulate light energy assimilation into carbon gain. We can therefore envisage that future increases in the grain yield potential of our major crops may depend largely on increasing the efficiency of photosynthesis. The papers in this issue provide new insights into the nature of current limitations on photosynthesis and identify new targets that can be used for crop improvement, together with information on the impacts of a changing environment on the productivity of photosynthesis on land and in our oceans. This article is part of the themed issue ‘Enhancing photosynthesis in crop plants: targets for improvement’.

scholarly journals Mapping QTL for spike fertility and related traits in two doubled haploid wheat (Triticum aestivum L.) populations

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Nicole Pretini ◽  
Leonardo S. Vanzetti ◽  
Ignacio I. Terrile ◽  
Guillermo Donaire ◽  
Fernanda G. González
Keyword(s):  
Doubled Haploid ◽  
Marker Assisted Selection ◽  
Triticum Aestivum L ◽  
Physiological Model ◽  
Yield Potential ◽  
Breeding Programs ◽  
Per Se ◽  
Genomic Regions ◽  
Fertility Traits ◽  
Selection Of

Abstract Background In breeding programs, the selection of cultivars with the highest yield potential consisted in the selection of the yield per se, which resulted in cultivars with higher grains per spike (GN) and occasionally increased grain weight (GW) (main numerical components of the yield). In this study, quantitative trait loci (QTL) for GW, GN and spike fertility traits related to GN determination were mapped using two doubled haploid (DH) populations (Baguette Premium 11 × BioINTA 2002 and Baguette 19 × BioINTA 2002). Results In total 305 QTL were identified for 14 traits, out of which 12 QTL were identified in more than three environments and explained more than 10% of the phenotypic variation in at least one environment. Eight hotspot regions were detected on chromosomes 1A, 2B, 3A, 5A, 5B, 7A and 7B in which at least two major and stable QTL sheared confidence intervals. QTL on two of these regions (R5A.1 and R5A.2) have previously been described, but the other six regions are novel. Conclusions Based on the pleiotropic analysis within a robust physiological model we conclude that two hotspot genomic regions (R5A.1 and R5A.2) together with the QGW.perg-6B are of high relevance to be used in marker assisted selection in order to improve the spike yield potential. All the QTL identified for the spike related traits are the first step to search for their candidate genes, which will allow their better manipulation in the future.

scholarly journals Breeding of High Cooking and Eating Quality in Rice by Marker-Assisted Backcrossing (MABc) Using KASP Markers

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 804
Author(s):  
Me-Sun Kim ◽  
Ju-Young Yang ◽  
Ju-Kyung Yu ◽  
Yi Lee ◽  
Yong-Jin Park ◽  
...  
Keyword(s):  
Genetic Background ◽  
Amylose Content ◽  
Yield Potential ◽  
Eating Quality ◽  
Breeding Cycle ◽  
Recurrent Parent ◽  
Rice Varieties ◽  
Breeding Programs ◽  
Genome Wide ◽  
Cooking And Eating Quality

The primary goals of rice breeding programs are grain quality and yield potential improvement. With the high demand for rice varieties of premium cooking and eating quality, we developed low-amylose content breeding lines crossed with Samgwang and Milkyqueen through the marker-assisted backcross (MABc) breeding program. Trait markers of the SSIIIa gene referring to low-amylose content were identified through an SNP mapping activity, and the markers were applied to select favorable lines for a foreground selection. To rapidly recover the genetic background of Samgwang (recurrent parent genome, RPG), 386 genome-wide markers were used to select BC1F1 and BC2F1 individuals. Seven BC2F1 lines with targeted traits were selected, and the genetic background recovery range varied within 97.4–99.1% of RPG. The amylose content of the selected BC2F2 grains ranged from 12.4–16.8%. We demonstrated the MABc using a trait and genome-wide markers, allowing us to efficiently select lines of a target trait and reduce the breeding cycle effectively. In addition, the BC2F2 lines confirmed by molecular markers in this study can be utilized as parental lines for subsequent breeding programs of high-quality rice for cooking and eating.

Irrigation and crop improvement in temperate and tropical environments

1986 ◽  
Vol 316 (1537) ◽  
pp. 319-330 ◽  
Keyword(s):  
Life Cycle ◽  
Low Temperatures ◽  
Energy Use ◽  
Crop Improvement ◽  
Yield Potential ◽  
Multiple Cropping ◽  
Tropical Environments ◽  
Physiological Processes ◽  
Seasonal Signals ◽  
The Tropics

There is a strong interaction between irrigation and crop improvement, irrigation creating new opportunities and challenges for plant breeders while depending on their progress for its full benefits to be realized. In temperate environments the primary emphasis is on raising yield potential, especially as irrigation enhances the use of agrichemical inputs. Efficiency of water and energy use through the modification of physiological processes and of sensitivity to stress at various stages of the life cycle is also sought. In tropical environments, breeding for greater yield potential and more comprehensive pest and disease resistance are still important. However, shortening the length of the life cycle, reducing its sensitivity to seasonal signals and increasing yield per day may be more important than raising yield per crop because of the scope for multiple cropping made possible by irrigation in the tropics in the absence of contraints by low temperatures.

Whey Utilization: Sustainable Uses and Environmental Approach

2021 ◽  
Vol 59 (2) ◽  
Author(s):  
Elizabeta Zandona ◽  
Marijana Blažić ◽  
Anet Režek Jambrak
Keyword(s):  
Whey Proteins ◽  
Organic Matter Content ◽  
Value Added ◽  
Edible Films ◽  
Matter Content ◽  
Raw Material ◽  
Sustainable Utilization ◽  
The Past ◽  
Food Applications ◽  
Value Added Products

The dairy industry produces large amounts of whey as a by- product or co-product, which has led to considerable environmental problems due to its high organic matter content. Over the past decades, possibilities of more environmentally and economically efficient whey utilisation have been studied, primarily to convert unwanted end products into a valuable raw material. Sustainable whey management is mostly oriented to biotechnological and food applications for the development of value-added products such as whey powders, whey proteins, functional food and beverages, edible films and coatings, lactic acid and other biochemicals, bioplastic, biofuels and similar valuable bioproducts. This paper provides an overview of the sustainable utilization of whey and its constituents, considering new refining approaches and integrated processes to covert whey, or lactose and whey proteins to high value-added whey-based products.

scholarly journals Can exports be used as an indicator of technological capabilities of countries?

Geografie ◽  
2015 ◽  
Vol 120 (3) ◽  
pp. 314-329 ◽  
Author(s):  
Jana Vlčková
Keyword(s):  
Emerging Economies ◽  
Value Added ◽  
The Philippines ◽  
Reliable Indicator ◽  
Technological Capabilities ◽  
The Past ◽  
Product Classification ◽  
Innovative Capabilities ◽  
The Eu

During the past 30 years, many emerging economies, especially China, have strengthened their technological and innovative capabilities. Have these countries started to threaten the position of traditional technological leaders? This paper examines whether technological capabilities of an economy can be evaluated based on the goods each economy exports (EXPY). Detailed product classification of exports to the EU in the period between 1984 and 2009 form the underlying data. Further, other data and studies are used to assess the reliability of EXPY. Results show that many emerging economies have significantly increased their technological sophistication; among them exports of Mexico, the Philippines and Malaysia are technologically the most sophisticated. These economies have significant share of foreign value added embodied in exports, though. Therefore, EXPY based on gross exports is not a reliable indicator of technological capabilities of countries and this indicator needs to be combined with other data.

scholarly journals Effects of Mutagens on Morphological traits of Psoralea corylifolia-A Medicinally Important Plant

2020 ◽  
Vol 26 (2) ◽  
Author(s):  
Ajey Karan Chaudhari ◽  
Anand Prakash Singh ◽  
B R Chaudhary
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Morphological Traits ◽  
Mutation Breeding ◽  
Yield Potential ◽  
Mutagenic Potential ◽  
Breeding Programs ◽  
Methane Sulphonate ◽  
Flowering Initiation ◽  
Yield Quality

Mutation breeding like in other plants can significantly strengthen medicinal plants breeding programs and help to produce novel varieties with higher yield potential and improved yield quality. The dry and healthy seeds of P. corylifolia IC 111228 were subjected to mutagenic treatments namely ethyl methane sulphonate (EMS) and sodium azide (SA). The treatment concentrations 15mM, 30mM, 45mM and 60mM of EMS and 1mM, 2mM, 3mM and 4mM of SA were chosen to evaluate the mutagenic potential in either case. The morphological traits were evaluated in M1 generation viz. plant height, days to flowering initiation, seed yield/plant and 100-seed weight. In EMS treatment 15 mM increased the plant height and seed yield, while in SA treatment 4 mM increased the seed yield/plant and 100-seed yield.

scholarly journals Participatory Crop Improvement of Nepalese Fingermillet Cultivars

2014 ◽  
Vol 9 ◽  
pp. 12-16 ◽  
Author(s):  
Sharad Bajracharya ◽  
Ram C. Prasad ◽  
Shiva K. Budhathoki
Keyword(s):  
Product Development ◽  
Field Study ◽  
Seed Production ◽  
Local Community ◽  
Crop Improvement ◽  
Value Added ◽  
Household Surveys ◽  
Field Verification ◽  
Market Promotion ◽  
Participatory Crop Improvement

A field study was undertaken on Nepalese fingermillet genotypes with the participation of the local community at pipaltar of nuwakot district during 2003 and 2004. The study included a) identification of superior fingermillet cultivars through diversity block management and mother set trial, b) seed Production of promising lines, c) farmers' field verification trial (diamond trial) And d) characterization and documentation of fingermillet genotypes. Results Revealed that mudke, chaure and jalbire are high yielding promising genotypes Suited to that area. From household surveys carried out among 46 samples (40%), 80 hh have revealed that mudke, chaure and seto kodo are preferred fingermillet cultivars. About 70% grow mudke, 46% grow chaure while 2% Grow Seto Kodo. The programme has successfully explored the potential of Local fingermillet cultivars by there evaluation and utilized them through Value added product development and market promotion. Nepal Agric. Res. J. Vol. 9, 2009, pp. 12-16  DOI: http://dx.doi.org/10.3126/narj.v9i0.11636

scholarly journals Innovation measurement: An extensive literature analysis

2021 ◽  
Vol 129 ◽  
pp. 05003
Author(s):  
Katarina Janoskova ◽  
Pavol Kral
Keyword(s):  
Literature Review ◽  
Web Of Science ◽  
Value Added ◽  
Extensive Literature ◽  
Literature Analysis ◽  
Scientific Publications ◽  
The Past ◽  
Econometric Methods ◽  
Innovation Measurement ◽  
A Company

Research background: There is no doubt that innovation is an important source of a company´s competitiveness, but it is very difficult to measure the extent to which it contributes to the growth of competitiveness. Opponents of measuring innovation argue that measuring innovation is a measurement of the immeasurable. How to measure innovations and is it possible to measure innovations, is a question constantly posed by academics, managers, and economists all over the world. To find answer to these questions, this review article analyses scientific publications on innovation measurement published between 1968 and 2021. Purpose of the article: The main purpose of this article is to increase the understanding of the metrics landscape and to identify differences in the methods used in the past and present with emphasis on identification of statistical and econometric methods used to study innovation. Methods: To achieve the purpose of the article, literature review as a method of qualitative research was used. Data for literature review were gained from the Web of Science database. Findings & Value added: The analysis finds several metrics that can be used for evaluation of company´s innovation. The results can helps managers, academics, and economists to better understand the innovation measurement..

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