allogamy

Tall group varieties are more heterogeneous due to crosspollination and destined to the production of copra, while more homogeneous dwarf varieties, due to their lower allogamy, are destined to the production of coconut water (BOURDEIX et al., 2005).

The greatest intrapopulation variation may be due to the reproductive system of Hymenaea courbaril presents allogamy and evidence of self-incompatibility (BAWA, 1974).

It is an annual, diploid (2n = 2x =12), self-compatible, autogamous plant, with average partial allogamy ranging from 32-40% (Bishnoi et al.

The fertilization of a flower in pollination can happen via self-pollination or allogamy. When the fertilization of the flower happens either from itself or from the different flower from the same plant, it is remarked as self-pollination, and if the pollens are from the different plant, then in that case, it is termed as allogamy or cross pollination.

Long- term allogamy makes it highly heterogeneous and consequently with broad genetic variation (Chen and Chen, 2012).

Although these species are classified as autogamous, some genotypes present allogamy rate which ranges from 2 to 90% (BOSLAND & VOTAVA, 2000), and some studies show benefits of pollinators presence (CRUZ et al., 2005; SERRANO & GUERRA-SANZ, 2006; NASCIMENTO et al., 2012).

The significantly higher (p < 0.05) fruit yield as a function of the cross-pollination in relation to self-pollination contradicts Weiss (1983), who stated that sesame is a predominantly autogamous species, which could only and possibly present allogamy above 10%.