1,430,139 research outputs found
Strengthening bean seed systems with focus on biofortified bean varieties to respond to bean farmers and market demand in Burundi, Kenya and Rwanda
Get PDFThe seed systems project is funded by the Syngenta Foundation for Sustainable Agriculture (SFSA) and aims at strengthening bean seed systems in three east African countries: Burundi, Kenya and Rwanda with focus on biofortified bean varieties to respond to bean farmers and market demand.
To achieve the objectives, project implementation process centers on: (1) identifying bean seed systems innovations linking to other complementary services/linkages; (2) establishing multi-stakeholders platforms with access to inputs and output market; (3) fast tracking release and use of biofortified beans focus but also and few other demands; (4) facilitating licensing of seed companies and creating linkages to crop insurance services providers; (5) enhancing equitable bean seed access; (6) facilitating regional germplasm exchanges; (7) enhancing skills and knowledge in bean agronomy/seed systems – market/demand led breeding; and (8) sharing lessons learnt across countries and scaling up best practices to other countries.
This report summarizes the progress made in the project implementation during the period February, 2015 to January 2016.The report is divided into three sections. The first section of the report presents a summary of the technical reports from respective countries. Section two presents a summary of students’ reports; while section three presents highlights on the semi-annual review meeting (organized and facilitated by PABRA), dwelling on remarks by some of the project stakeholders (a detailed report on the semi-annual review meeting has been produced separately)
Sources of variation of common bean for drought tolerance
No full text2 páginas, 1 tablaDrought is considered the major factor limiting crop production worldwide and is responsible for heavy production losses in food legumes. Some losses are due to intermittent drought during the vegetative
phase while other is due to terminal drought during reproductive development (Serraj et al. 2004). The severity of drought stress is unpredictable as it depends on many factors such as occurrence and distribution of rainfall, evaporative demands of the atmosphere and moisture storing capacity of the soils. Moderate to high drought stress can reduce biomass, number of seeds and pods, days to maturity, harvest index, seed yield and seed weight in common bean. Management practices can contribute to a decrease in
yield loss in water-deficient environments, but major progress can also be achieved through genetic improvement. Plant responses to water stress include morphological and biochemical changes that lead first to acclimation and later, as water stress become more severe, to functional damage and the loss of plant parts (Chaves et al. 2002). In common bean, the main selection criteria for drought resistance are parameters related to plant growth and grain production. The objective of this work was to identify
common bean sources of variation for breeding for drought tolerance.This research was supported by the project PGIDIT06RAG40301PR from the Galician Government.Peer reviewe
Bean, Dr. William -- 1975 -- Correspondence, Individual -- letter, 1975-11-24
No full textLetter from Bean, William B. to Sabin, Albert B. dated 1975-11-24.Sabin Collection Fair Use Policy</a
Entrevista a Anne Bean
No full textCàmara i producció: Tila Rodríguez-PastFinançat per la Comissió Europea de Cultura 2007-13Entrevista a l'artista britànica, Anne Bean, sobre la seva vida i obra. Anne Bean és entrevistada per Brian Catling, a Oxford, el gener de 20126289.mp4
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The Bean Bag no. 40
No full textUSDA Agricultural Research Service transfers distribution of The Bean Bag to Royal Botanic Gardens, Kew. -
In August, the senior Editor of The Bean Bag was notified that USDA Agricultural Research Service, Systematic Botany and Mycology Laboratory could no longer pay the costs of distributing The Bean Bag. Due to mandated salary increases without additional funding, the Laboratory no longer had sufficient financial resources to carry out its research missions and to fund the distribution of The Bean Bag. Inquiries were made at several major botanical institutions, and the Royal Botanic Gardens, Kew has agreed to assume responsibility for future distribution of The Bean Bag. KIRKBRIDE and WIERSEMA will continue to edit The Bean Bag and prepare copy for reproduction. The questionnaires and material for publication in The Bean Bag should continue to be sent to Beltsville. The staff of the Royal Botanic Gardens, Kew will be responsible for reproducing and distributing The Bean Bag.
This issue is distributed in hardcopy to all subscribers listed in the Directory. To receive future issues please make sure that you complete and return the pink form enclosed with this issue, or if you have e-mail please send an electronic message to (Internet). A mechanism is now under development to supply The Bean Bag via e-mail to those subscribers with suitable facilities to receive it. Subscribers will also have electronic access to other information, such as the Directory. Subscribers without e-mail will receive the same standard of service as hitherto if they return the pink form to the Editors, but the Directory will be sent only on request
The Bean Bag no. 44
No full textEditorship of The Bean Bag Terminated at the USDA Agricultural Research Service -
In early December 1996, the two senior editors of. The Bean Bag were informed by their Research Leader, US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, that they could not longer continue to edit The Bean Bag. The November 1996 issue, number 44, i.e., this issue, was near completion, and they were allowed to finish it.
In continuing support of The Bean Bag, The Royal Botanic Gardens (RBG), Kew has offered to take over the editorship on a trial basis but to reduce production annually to one issue in the autumn. Barbara Mackinder will be the editor, and it is to her that enquiries and offerings should be addressed in the first instance (). It is the intention of RBG Kew to continue to offer The Bean Bag in it's current format although Recent Legume Literature will be compiled from The Kew Record (Kew's current awareness list of taxonomic literature). The Directory will be maintained as before, available as it is now in printed form and on the World Wide Web. No other changes are foreseen at this time
Biochemical basis of insect resistance in winged bean (Psophocarpus tetragonolbus): characterisation of insecticidal proteins and their encoding genes
Get PDFMany pulses and beans grown for human comsumption are susceptible to insect attack. Winged bean, a high protein crop of the tropics, yield seeds which appear to be immune to infestation by the storage bruchid Callosobruchus maculatus. In this thesis the biochemical basis of this resisitance was investigated. Insect bio-assays were carried out in which protein fractions from seeds of winged bean were incorporated at a range of concentrations into artificial seeds, and their effects upon the development of C.maculatus determined. Both albumin and globulin fractions were toxic to the developing larvae and their toxicity correlated with their haemagglutination activity. Assay of psophocarpin fractions A, B and C found the fraction psophocarpin B to be most insecticidal. On further purification this fraction yielded two lectin fractions and a protease inhibitor fraction. Purified basic lectin was highly insecticidal to C. maculatus larvae with an LC(_50) value of 0.35%. The physiological level of this protein in winged bean seeds is sufficient to account for their resistance to attack by C maculatus. Winged bean trypsin inhibitor was also purified and tested in artificial seeds against C maculatus. However, even at concentrations in excess of twice the physiological concentration it had no deleterious effects upon development. Winged bean protein fractions, incorporated in artificial diets, proved toxic to the Lepidopteran pests Heliothis virescens and Spodoptera littoralis in bio-assays, but it appeared that the basic lectin was not responsible for toxicity towards these insects. Attempts to clone the gene encoding the winged bean basic lectin were made by constructing cDNA and genomic libraries, and heterologous lectin genes from soybean and Phaseolus were investigated as possible probes for the basic lectin gene. Purification of the basic lectin B3 and sequencing of 44% of its primary protein structure, along with comparisons with other legume lectin sequences allowed the synthesis of oligonucleotide primers for use in polymerase chain reaction experiments. However, all the PGR products obtained were shown to be the result of non-specific amplification. Further work needed to obtain the basic lectin gene is discussed
The Bean Bag Issue 62
No full textDear Bean Bag Fellow,
This has been a year of many happenings in the legume community as you can appreciate in this issue; starting with organizational changes in the Bean Bag, continuing with sad news from the US where one of the most renowned legume fellows passed away later this year, moving to miscellaneous communications from all corners of the World, and concluding with the traditional list of legume bibliography.
Indeed the Bean Bag has undergone some organizational changes. As the new editor, first of all, I would like to thank Dr. Lulu Rico and Dr. Gwilym Lewis very much for kindly inviting me to take on the lead of The Bean Bag. I very appreciate this opportunity; connecting with the wonderful community of legume aficionados! I am myself a legume aficionada, in love with the caesalpinioid legume genus Senna as well as with those small secretory structures called extrafloral nectaries and found across the entire family. As a member of the Legume Phylogeny and the Legume Morphology working groups - of which you will read some news in this issue – it is an is an honor for me to continue the legacy of the Bean Bag.
Second, the Bean Bag will continue to work as usual with the difference that the newsletter and important communications will be send out through new BB Google Group to which BB members have been added earlier this year. This is the only purpose of the google group. For any correspondence about the BB, members are invited to email the editor at the new BB address .
Finally, I am very grateful to all contributors of this issue for sharing their news, insights, images and publication citations. Note that this newsletter will be made available for online download on the BB webpage along with the pdfs of all previous issues: .
Thank you very much for your consideration and I wish you Very Happy Holidays and Very Happy New Year!
Kind regards,
Brigitte Marazz
The Bean Bag Issue 67
No full textThe Bean Bag started in 1974 on the initiative of Charles (Bob) Gunn and Richard Cowan and the first printed issue was distributed 45 years ago in May 1975. The aim of the annual newsletter is to keep legume researchers informed about new publications, events and projects focused on the systematics of the family Leguminosae.
We warmly thank Brigitte Marazzi, previous editor of the Bean Bag, for all her hard work compiling the newsletter over the last five years, and especially for transforming it into a much more colourful and well-illustrated format. We also thank Gwilym Lewis at Kew for help with checking this issue and supporting the continued archiving of the Bean Bag. Finally, we thank the legume community and our many contributors for sharing their time and insights
Towards the development of a sustainable soya bean-based feedstock for aquaculture
Get PDFSoya bean (Glycine max (L.) Merr.) is sought after for both its oil and protein components. Genetic approaches to add value to either component are ongoing efforts in soya bean breeding and molecular biology programmes. The former is the primary vegetable oil consumed in the world. Hence, its primary usage is in direct human consumption. As a means to increase its utility in feed applications, thereby expanding the market of soya bean coproducts, we investigated the simultaneous displacement of marine ingredients in aquafeeds with soya bean-based protein and a high Omega-3 fatty acid soya bean oil, enriched with alpha-linolenic and stearidonic acids, in both steelhead trout (Oncorhynchus mykiss) and Kampachi (Seriola rivoliana). Communicated herein are aquafeed formulations with major reduction in marine ingredients that translates to more total Omega-3 fatty acids in harvested flesh. Building off of these findings, subsequent efforts were directed towards a genetic strategy that would translate to a prototype design of an optimal identity-preserved soya bean-based feedstock for aquaculture, whereby a multigene stack approach for the targeted synthesis of two value-added output traits, eicosapentaenoic acid and the ketocarotenoid, astaxanthin, were introduced into the crop. To this end, the systematic introduction of seven transgenic cassettes into soya bean, and the molecular and phenotypic evaluation of the derived novel events are described.
Includes supplementary materials
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