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Macroptilium lathyroides (L.)Urban. A. Leafy twig; B. Inflorescence; C. Stem showing stipules; D. Single flower; E. Leaf showing mucronate apex; F. Abaxial surface of leaf showing pubescent nature; G. Leaf base; H. Calyx with gynoecium; I. Androecium; J. Surface of fruit (matured and dried); K. Opened fruit; L. Single seed. (Photos: Prabhu,K.M.).
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... second author collected the same from Kollam district of Kerala. On critical examination and reference to relevant literature the specimens were identified as Macroptilium lathyroides (L.) Urb., which is yet to be figured in the floristic account of Kerala species. Therefore, the present collection is a new distributional record for Kerala state. (Fig. ...
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... Macroptilium species are considered a potential forage native resource under water stress , although little productive and chemical composition information is known (Silva et al., 2015). This legume genus, native to tropical America, is represented by 21 species distributed mainly in Northern Argentina, Venezuela´s savannas, Southern Uruguay and several regions of Brazil and Mexico (Torres-Colín et al., 2010;Ciotti et al., 2014;Prabhukumar et al., 2016;Alatorre-Hernández et al., 2018). According to Sousa et al. (2013), it was introduced to tropical and subtropical India, Australia, Africa, and southeastern North America. ...
Fifteen accessions of Macroptilium lathyroides (L.) Urb. were collected in three semi-arid Brazilian municipalities and evaluated to characterize their morphology and yield in a greenhouse for three 60-day growth cycles. In the first two cycles, chlorophyll a and b, carotenoids, and soil plant analysis development index (SPAD) were estimated, and root dry mass was determined in the third cycle. Data were analyzed by analysis of variance and Kruskall-Wallis test when appropriate. Principal component analysis and clustering were performed for all accessions. Leaf length, leaf number, leaf mass and total aerial mass production differed between accessions and growth cycles. Root dry mass differed between accessions and SPAD index and stem dry mass between growth cycles. The first two principal components (representing 67% of the variation) generated three clusters based on leaf and leaflet length, plant height, and total aerial mass. The variation in plant height, leaf number, and leaf and total aerial mass in all accessions of M. lathyroides indicates that there is merit in collecting further germplasm of this species to support future breeding programs. Access 62F (Bom Jardim) stands out considering most of the morphological and productive.
... The accessions of M. lathyroides presented the highest values for number of seeds per pod, however, also presented variation within, that is, it is possible to carry out selection within the species for this characteristic. Prabhukumar et al. (2016) describes M. lathyroides as a species of numerous seeds with 12-20 seeds per pod, which is according to the present research. ...
... For all studied species, the length of the inflorescence was similar to those obtained by other authors. For M. lathyroides where the length of the inflorescence can vary from 25 to 45 cm (Prabhukumar et al. 2016), for M. atropurpureum it can vary from 13 to 30 cm length (Snak et al. 2011) and for M. martii can vary from 5 to 28 cm (Barbosa-Fevereiro 1987). ...
The objective of this study was to characterize and quantify the genetic diversity within and between species of the genus Macroptilium with potential in animal feed, through morpho-agronomic descriptors. Sixty-four accessions of three species were used. The experimental design was randomized block design with three replications and five plants per plot. Eighteen qualitative and six quantitative morphological descriptors were used in addition to six agronomic descriptors. Quantitative data were submitted to analysis of variance and means were compared by Scott–Knott test, at 5% significance. For the divergence analyzes all the descriptors were grouped based on the Gower algorithm. The dendrogram was obtained by the UPGMA hierarchical grouping method and the relative importance of the characters was calculated for the divergence. There was significant effect for most quantitative traits and high variability for both between and within the studied species. Seven groups were formed which were grouped mainly in relation to the species. Groups IV, VI and VIII formed by accessions of M. atropurpureum (Sessé and Moc. ex DC.) Urb. have characteristics of interest for animal feeding. CTM-S04 and CTM-S07, not taxonomically classified, were allocated to these groups. The accessions that presented the greatest potential for animal production were CTM-A16 and CTM-M8, because they presented high dry matter production and high leaf:stem ratio. These accessions were superior to the cultivar Siratro (CTM-A27) with respect to these descriptors. These results indicate that the genotypes showed variability between and within the species which make possible their use in programs of selection and breeding for animal feed.
Ruderal plants are important they are used for animal (e.g., beekeeping/pasture) and human food. Many of these plants present multiple reproductive strategies that ensure that they remain in disturbed environments. Therefore, we investigated the sexual reproduction and regeneration by regrowth of the forage ruderal Macroptillium lathyroides in an anthropized area to support management of this species after cutting or grazing and determine its requirements for seed production and conditions for commercial use. We assessed the occurrence of reproduction through regeneration and species dependence on pollinators. M. lathyroides has an axial underground system capable of regrowth but not propagation post-cut. Its flowers last about eight hours and are papilionate, asymmetrical, hermaphrodite, nectariferous, vinaceous and diurnal. They present secondary pollen that is transferred to the trichomes of the style. The species is self-compatible and presents spontaneous self-pollination. The small bee Exomalopsis cf. auropilosa, was the only pollinator since it activated the brush-type pollination mechanism while gathering nectar/pollen. The species depends on seeds to propagate or maintain a seed bank, since all plants do not regrow after cutting. Thus, sexual reproduction is necessary, but pollinators are not since it is not pollinator independent.
