CORVALLIS, Ore., Jan. 3 (UPI) -- A plant preserved in 100 million-year-old amber has revealed the oldest evidence of sexual reproduction in a flowering plant, U.S. and European researchers say.

Scientists have discovered a sexual reproduction process in microalgae that helps them better understand algae and plant evolution. Their discovery could lead to new industrial applications for ...

Researchers have identified a genetic sequence that is essential for plant reproduction. As this region is found in all plant species, it is expected to contribute to future crossbreeding initiatives ...

Small RNAs are short RNA molecules that help determine which genes in a cell are switched on or off. Until now, it was assumed that the small RNAs necessary for pollen development originate in the ...

Scientist have discovered that pollen, the organ that contains the plant male gametes, communicate with the pistil, their female counterpart, using a mechanism commonly observed in the nervous system ...

American Journal of Botany, Vol. 96, No. 5 (May, 2009), pp. 904-911 (8 pages) According to life-history theory, reproductive investments involve costs in terms of growth, future fecundity, and/or ...

Self-incompatibility (SI) is a sophisticated reproductive strategy that prevents self-fertilisation and maintains genetic variability in flowering plants. This mechanism involves highly specific ...

Biogeographic models predict that, because of increasingly unfavorable and stressful conditions, populations become less frequent, smaller, less dense, and less reproductive toward the range edges.