Maass, Brigitte L.

[["dc.bibliographiccitation.firstpage","19"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Genetic Resources and Crop Evolution"],["dc.bibliographiccitation.lastpage","30"],["dc.bibliographiccitation.volume","56"],["dc.contributor.author","Khan, Muhammad A."],["dc.contributor.author","von Witzke-Ehbrecht, Sabine"],["dc.contributor.author","Maass, Brigitte L."],["dc.contributor.author","Becker, Heiko C."],["dc.date.accessioned","2018-11-07T08:33:03Z"],["dc.date.available","2018-11-07T08:33:03Z"],["dc.date.issued","2009"],["dc.description.abstract","Patterns of geographical diversity, and the relationship between agro-morphological traits and fatty acid composition were assessed for 193 safflower (Carthamus tinctorius) accessions representing forty countries. Accessions were assigned to eight groups based on geographical proximity. Cluster and Principal Component analyses were performed to assess patterns of diversity among the accessions and to select the most distant accessions from each of eight groups for analysis of randomly amplified polymorphic DNA (RAPD) markers. There was a large amount of diversity for agro-morphological traits, fatty acid composition, and RAPD markers. Most correlations among different traits were rather low. Plant height showed a positive correlation with days to flowering (r = 0.63 ). Palmitic acid was positively correlated with stearic acid and oleic acid values, and negatively correlated with linoleic acid (P < 0.01). Oleic acid and linoleic acid showed a strong negative correlation (r = -0.89 ). The first three principal components together explained 59% of the variation, however, neither principal component analysis (PCA) nor marker analysis revealed a clear relationship between diversity pattern and geographical origin. Accessions from some geographical regions tended to group together, such as accessions from South Western Asia, Central Western Europe, and the Mediterranean region. The correlation between the morphological matrix and the genetic matrix based on RAPD markers was not significant (r = 0.027). Wide diversity in safflower germplasm indicates a considerable potential for improving this crop for both agronomic and quality traits."],["dc.identifier.doi","10.1007/s10722-008-9338-6"],["dc.identifier.isi","000264835500004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3582"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17481"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0925-9864"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Relationships among different geographical groups, agro-morphology, fatty acid composition and RAPD marker diversity in Safflower (Carthamus tinctorius)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Tropical Plant Biology, Vol. 3, Nr. 3, p. 123-135"],["dc.contributor.author","Maass, Brigitte"],["dc.contributor.author","Knox, Maggie"],["dc.contributor.author","Venkatesha, S."],["dc.contributor.author","Angessa, Tefera"],["dc.contributor.author","Ramme, Stefan"],["dc.contributor.author","Pengelly, Bruce"],["dc.date.accessioned","2019-07-09T11:52:34Z"],["dc.date.available","2019-07-09T11:52:34Z"],["dc.date.issued","2010"],["dc.description.abstract","In recent years, so-called ‘lost crops’ have been appraised in a number of reviews, among them Lablab purpureus in the context of African vegetable species. This crop cannot truly be considered ‘lost’ because worldwide more than 150 common names are applied to it. Based on a comprehensive literature review, this paper aims to put forward four theses, (i) Lablab is one of the most diverse domesticated legume species and has multiple uses. Although its largest agro-morphological diversity occurs in South Asia, its origin appears to be Africa. (ii) Crop improvement in South Asia is based on limited genetic diversity. (iii) The restricted research and development performed in Africa focuses either on improving forage or soil properties mostly through one popular cultivar, Rongai, while the available diversity of lablab in Africa might be under threat of genetic erosion. (iv) Lablab is better adapted to drought than common beans (Phaseolus vulgaris) or cowpea (Vigna unguiculata), both of which have been preferred to lablab in African agricultural production systems. Lablab might offer comparable opportunities for African agriculture in the view of global change. Its wide potential for adaptation throughout eastern and southern Africa is shown with a GIS (geographic information systems) approach."],["dc.identifier.doi","10.1007/s12042-010-9046-1"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5164"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60226"],["dc.publisher","Springer"],["dc.rights.access","openAccess"],["dc.subject.ddc","630"],["dc.title","Lablab purpureus—A Crop Lost for Africa?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","699"],["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Sennhenn, Anne"],["dc.contributor.author","Njarui, Donald M. G."],["dc.contributor.author","Maass, Brigitte L."],["dc.contributor.author","Whitbread, Anthony M."],["dc.date.accessioned","2018-11-07T10:23:53Z"],["dc.date.available","2018-11-07T10:23:53Z"],["dc.date.issued","2017"],["dc.description.abstract","Climate variability is the major risk to agricultural production in semi-arid agroecosystems and the key challenge to sustain farm livelihoods for the 500 million people who inhabit these areas worldwide. Short-season grain legumes have great potential to address this challenge and help to design more resilient and productive farming systems. However, grain legumes display a great diversity and differ widely in growth, development, and resource use efficiency. Three contrasting short season grain legumes common bean (Phaseolus vulgaris L.), cowpea (Vigna unguiculata (L.) Walp.] and lablab [Lablab purpureus (L.) Sweet] were selected to assess their agricultural potential with respect to climate variability and change along the Machakos-Makueni transect in semi-arid Eastern Kenya. This was undertaken using measured data [a water response trial conducted during 2012/13 and 2013/14 in Machakos, Kenya] and simulated data using the Agricultural Production System sIMulator (APSIM). The APSIM crop model was calibrated and validated to simulate growth and development of short-season grain legumes in semi-arid environments. Water use efficiency (WUE) was used as indicator to quantify the production potential. The major traits of adaptation include early flowering and pod and seed set before the onset of terminal drought. Early phenology together with adapted canopy architecture allowed more optimal water use and greater partitioning of dry matter into seed (higher harvest index). While common bean followed a comparatively conservative strategy of minimizing water loss through crop transpiration, the very short development time and compact growth habit limited grain yield to rarely exceed 1,000 kg ha(-1). An advantage of this strategy was relatively stable yields independent of in-crop rainfall or season length across the Machakos-Makueni transect. The growth habit of cowpea in contrast minimized water loss through soil evaporation with rapid ground cover and dry matter production, reaching very high grain yields at high potential sites (3,000 kg ha(-1)) but being highly susceptible to in-season drought. Lablab seemed to be best adapted to dry environments. Its canopy architecture appeared to be best in compromising between the investment in biomass as a prerequisite to accumulate grain yield by minimizing water loss through soil evaporation and crop transpiration. This lead to grain yields of up to 2,000 kg ha-1 at high potential sites and > 1,000 kg ha(-1) at low potential sites. The variance of observed and simulated WUE was high and no clear dependency on total rainfall alone was observed for all three short-season grain legumes, highlighting that pattern of water use is also important in determining final WUEbiomass and WUEgrain. Mean WUEgrain was lowest for cowpea (1.5-3.5 kggrain ha(-1) mm(-1)) and highest for lablab (5-7 kggrain ha(-1) mm(-1)) reflecting the high susceptibility to drought of cowpea and the good adaptation to dry environments of lablab. Results highlight that, based on specific morphological, phonological, and physiological characteristics, the three short-season grain legumes follow different strategies to cope with climate variability. The climate-smart site-specific utilization of the three legumes offers promising options to design more resilient and productive farming systems in semi-arid Eastern Kenya."],["dc.identifier.doi","10.3389/fpls.2017.00699"],["dc.identifier.isi","000400921500001"],["dc.identifier.pmid","28536585"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14969"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42548"],["dc.language.iso","en"],["dc.notes.intern","DeepGreen Import"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Frontiers Media S.A."],["dc.relation.eissn","1664-462X"],["dc.relation.issn","1664-462X"],["dc.rights","http://creativecommons.org/licenses/by/4.0/"],["dc.rights.access","openAccess"],["dc.subject.ddc","570"],["dc.title","Exploring Niches for Short-Season Grain Legumes in Semi-Arid Eastern Kenya - Coping with the Impacts of Climate Variability"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","543"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Agroforestry Systems"],["dc.bibliographiccitation.lastpage","553"],["dc.bibliographiccitation.volume","76"],["dc.contributor.author","Arango-Ulloa, Johanna"],["dc.contributor.author","Bohorquez, Adriana"],["dc.contributor.author","Duque, Myriam C."],["dc.contributor.author","Maass, Brigitte L."],["dc.date.accessioned","2018-11-07T08:27:51Z"],["dc.date.available","2018-11-07T08:27:51Z"],["dc.date.issued","2009"],["dc.description.abstract","Germplasm of the calabash tree (Crescentia cujete L.) was collected in five major regions of Colombia, i.e. the Andes, Caribbean, Amazon, Orinoco, and Pacific regions. Collecting this multipurpose tree was guided by the indigenous knowledge of farmers and artisans in each region. Large variation in fruit shapes and sizes was found, of which some forms were typical for certain regions. Overall 56 accessions were collected and roughly classified into 22 types by eight fruit shapes and eight sizes. Molecular markers (Amplified fragment length polymorphisms) were applied to leaf tip tissue originating from vegetatively propagated plants in order to assess the diversity available in the germplasm collected as well as to detect patterns of geographical or morphological similarity. One accession each of C. alata H.B.&K. and C. amazonica Ducke were used as outgroups. Overall, genetic diversity was high (mean Nei and Li's coefficient of 0.43). No relations could be established between either geographical provenance or fruit morphology and patterns of genetic diversity. Concerning the outgroups, the C. amazonica accession appeared to be a distinct species. The C. alata accession, however, did not seem to be sufficiently distinct from C. cujete to merit species status. The latter material may in fact be a hybrid or serve to challenge the validity of interspecific organization of the genus Crescentia."],["dc.identifier.doi","10.1007/s10457-009-9207-0"],["dc.identifier.isi","000267056400004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3574"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16289"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0167-4366"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Diversity of the calabash tree (Crescentia cujete L.) in Colombia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2553"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Biodiversity and Conservation"],["dc.bibliographiccitation.lastpage","2564"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Acebey, Amparo"],["dc.contributor.author","Kroemer, Thorsten"],["dc.contributor.author","Maass, Brigitte L."],["dc.contributor.author","Kessler, Michael"],["dc.date.accessioned","2018-11-07T08:40:37Z"],["dc.date.available","2018-11-07T08:40:37Z"],["dc.date.issued","2010"],["dc.description.abstract","In Bolivia, the plant families Araceae and Bromeliaceae offer numerous non-timber products, including ornamental plants, medicines, foods, and fibers. The economic potential for the utilization of these resources depends critically on the distribution of potentially useful species in different ecoregions in Bolivia. We conducted both a bibliographical revision of uses and ecological field work at 43 sites in the Bolivian Andes and lowlands to assess the potential for sustainable use as suggested by the Rapid Vulnerability Assessment method. The ecological criteria used for the evaluation were abundance (frequency), life form, geographical distribution, and habitat preference. We found that Bolivia has a striking number of potentially useful species of both families but that their potential use differs among ecoregions. Araceae were most species-rich and frequent in the humid lowland and montane forests. In these ecoregions, this family has a particular local importance mainly as traditional medicines and a great potential as ornamental plants. In contrast, economically useful bromeliads are best represented in seasonally dry forest habitats, especially for the production of fibres. Many species of bromeliads, which also occur in humid montane forests, although rare, are potentially important for commercialisation as ornamental species. This study shows that the uses of Araceae and Bromeliaceae are manifold and could be greatly increased through efficient management, although with different strategies according to the different ecoregions."],["dc.identifier.doi","10.1007/s10531-010-9859-0"],["dc.identifier.isi","000279682700008"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19273"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0960-3115"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Ecoregional distribution of potentially useful species of Araceae and Bromeliaceae as non-timber forest products in Bolivia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]