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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Although sexual determinism in plants and animals is fundamentally different, the architecture of sex chromosomes is likely to be comparable Charlesworth, Global experience with jatropha cultivation for bioenergy: Male flowers started opening two days after the female flowers, and lasted up to 13 days, with the highest peaks between days 8 and Remarkably, 39 Asian and African accessions were almost monomorphic and homozygote in both kinds of markers, except for five Vietnamese accessions, each of which was heterozygote in a single marker.

Many factors affect the start of flowering, like genetic variability, jjatropha, phyto-hormones and environmental conditions.

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We also observed two hermaphrodite flower types; one with ten stamens around the ovary longer than the pistil and the second one with four to six stamens around the ovary shorter than the pistil.

Javascript is disabled in your browser. This procedure was vurcas with five populations and 87 accessions.

All of them were expected to have retrotransposed more recently than other members. Analysis of seed phorbol-ester and curcin content together with genetic diversity in multiple provenances of Jatropha curcas L. Our data show that the efficient pollinating bees have oligolectic or monolectic behavior, at least during the season studied.


Breeding high-yielding Jatropha varieties is in its infancy so far Chkapas et al. For markers that showed ambiguous bands, experiments were repeated until clear bands were observed by increasing annealing temperatures.

These also suggest that there were selections when cucas brought Jatropha from central Chiapas. To answer the question of how informative are floral morphological traits compared to molecular markers, we perform a Mantel correlation test between the distance matrix generated in this study and the genetic distance matrix AFLP previously reported chkapas the same accessions.

Genetic Tracing of Jatropha curcas L. Sex chromosomes in plants. On the other hand, the central Chiapas has less humid climate, annual precipitation ranges from to mm Newton and Tejedor, National Center for Biotechnology InformationU. This suggests that it represents the original genetic group.

Flowers regularly opened over an average period of 15 days Fig. The study was conducted within the living fences of a farm plot at Soconusco, Chiapas, Southern Mexico This work was supported by a research grant provided by the Agricultural Innovation MKTPlace Initiative Regulation of the flowering of Jatropha curcas to improve the sustainability of biofuel feedstock production by farmers in Latin America and the Caribbean.

Genetic Tracing of Jatropha curcas L. from Its Mesoamerican Origin to the World

Such knowledge could help design strategies to increase crop productivity; i. The remaining insects were considered pillagers or nectar robbers Table 1.


The stigma was receptive at the time of — h. We also carried out a second discriminant analysis, which exclusively studied accessions from Chiapas, because in that State there is the greatest extension of traditional cultivation of J.

Two exceptions were Eristalis sp. Characteristics of physic nut, Jatropha curcas L. Sex of flowers in J. The existence of complex systems has been documented in dioecious crops as apple Hancock, and hemp Mandolino et al.

The mean values and SDs of the accessions from central Chiapas were higher than those from the peripheral areas of Chiapas and other Mexican states Supplementary Table 4.

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

Our results contribute to design genetic improvement programs by using sexually and morphologically contrasting plants from the center of origin. Medicinal property, phytochemistry and pharmacology of several Jatropha species Euphorbiaceae: Robertson 1 PI 0. Three genetic populations, Groups A, B and C, cniapas indicated in orange, purple, and blue, respectively.

Phenotypic diversity of Jatropha curcas L. Our results revealed that the typical male flowers whorls Fig. Pakistan Journal of Biological Sciences. Moreover, Guerrero was the most diverse population, probably because there are plants with hermaphrodite flowers in this population.