In a recent study, published in Science, the researchers show that the pollen tube does not grow properly in newly formed polyploid plants. Normally, a pollen grain that sticks to the stigma of a ...

then passes along the pollen tube and joins with the nucleus of the ovule (the female gamete). This process is called fertilisation. Radicle The young root that will become the adult plant below ...

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Following its rediscovery, horticulturalists worked to propagate Ka Palupalu o Kanaloa, but found limited success. The two ...

BEIJING, March 26 (Xinhua) -- How did Earth's earliest seed plants capture pollen to reproduce? A team of scientists has uncovered new clues by studying 365-million-year-old seed plant fossils ...