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New evidence of late-acting self-incompatibility in Bignoniaceae

Histological analysis of post-pollination events is a powerful tool to distinguish between early-acting inbreeding depression and late-acting self-incompatibility. Bittencourt et al. (pp. 827-834) studied the histology of ovules from self- vs. cross-pollinated pistils and conclude that late-acting self-incompatibility based on premature flower abscission is the best explanation for self-sterility in Spathodea campanulata.





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