Jatropha curcas L. (Jatropha), a shrub species of the family We found that central Chiapas of Mexico possesses the most diverse genetic. Classification of accessions of Jatropha curcas L. from the Jatropha Germplasm Bank of the Universidad Autónoma de Chiapas, based on. To investigate the genetic diversity and structure of Jatropha curcas L. oilseed plant, in this study, native populations from Chiapas, Mexico.

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This shows that cbiapas Sierra Madre de Chiapas is a strong physical barrier between these populations and may be the main cause of diversification among populations. Such knowledge could help design strategies to increase crop productivity; i. They were observed simultaneously visiting female flowers for nectar during the period of maximum stigma receptivity facilitating xenogamy and geitonogamy, whereby they were classified as efficient pollinators.

The most important variables to group these populations, based on a discriminant analysis, were: We classify this species as occasional pollinator for J.

Reproductive biology of the biofuel plant Jatropha curcas in its center of origin [PeerJ]

Among those bees are hatropha S. In female flowers occasional variation was found in the number of ovules two, three or four. The most abundant insects were Hymenoptera and Diptera, which is consistent with some previous studies in other areas Luo et al.

This exchange would have involved human selection of the specific Jatropha genotype with advantageous phenotypes across these regions. Then, a cluster analysis Euclidean distance and Ward grouping method was performed to visualize the relationships among populations. Means to construct figure 2. Pollen production cjrcas another ranged from — pollen grains mean: Accessions of Jatropha curcas L.


Matthew Jackson PeerJ author. Sex expression in the biofuel plant Jatropha curcas.

Genetic Diversity in Jatropha curcas Populations in the State of Chiapas , Mexico

Two analyses of hierarchical ascendant classification dendrogram or cluster analysis were undertaken: The first type refers to the variability among inflorescences of the same plant, which may have the origin in the genotype-environment interaction Heller, or in epigenetic factors Yi et al. For details of grouping mode see the Materials an Methods section.

According to the results, number of retrotransposons present in each accession was counted.

Plant sex determination and sex chromosomes. Therefore, it is necessary to perform a study involving more individuals to confirm the absence of gynomonoecious. We gratefully acknowledge Mr. This is an open access article distributed under the terms of the Creative Commons Attribution Licensewhich permits unrestricted use, distribution, reproduction and adaptation in any medium and crcas any purpose provided that it is properly attributed.

Satoshi Tabata for offering scientific assistance and Dr. The most important component C1 B explained For this part of the study, we sampled the area of influence of plants. Published online Sep 7.

The only apomictic fruit had a high fresh weight, which contrasted with a low seed fresh weight, due to its thick endocarp.

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Frontera and Soconusco populations showed a iatropha differentiation between them and with respect to other populations. The Spanish conquistadors normally did not enter the Chiapas Central Depression, where no mineral resources were expected to occur Ochiai, The presence of trichomes was evaluated according to the following scale: Support Center Support Center.


Introduction Jatropha curcas L. Proceedings of the Royal Society of London.

Sex expression and floral diversity in Jatropha curcas: a population study in its center of origin

The background map is available from https: First, make wide crosses between elite lines from each country in Africa and Asia, which should have their epigenetic adaptations to the climatic conditions, and accessions of Group A from central Chiapas, which are genetically distant from African and Asian Jatropha and have the largest genetic diversity. From This Paper Topics from this paper.

Means for the construction of Figure 1. It was probably because they used only 19 Mesoamerican Mexican accessions from limited collection sites.

We further identified the voyage from Chiapas chapas the Old World by tracing the progenies in Mesoamerica sharing the same ancestors with nowadays African and Asian accessions. The polylectic behavior of stingless bees has been reported in previous work, and this is due to the different sources of pollen that they forage for food.

Jatrophabiofuel plant, genetic diversity, center of origin, genetic resources. Introduction Jatropha curcas L.

Biomass Bioenergy 60 —