En esta página puede obtener un análisis detallado de una palabra o frase, producido utilizando la mejor tecnología de inteligencia artificial hasta la fecha:
общая лексика
однобороздный
['pɔlən]
общая лексика
пыльца
цветень
существительное
['pɔlən]
ботаника
цветочная пыльца
цветень
пыльца
глагол
ботаника
опылять
общая лексика
экзина (наружная оболочка пыльцевого зерна или споры)
A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. Pollen tube elongation is an integral stage in the plant life cycle. The pollen tube acts as a conduit to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms. In maize, this single cell can grow longer than 12 inches (30 cm) to traverse the length of the pistil.
Pollen tubes were first discovered by Giovanni Battista Amici in the 19th century.
They are used as a model for understanding plant cell behavior. Research is ongoing to comprehend how the pollen tube responds to extracellular guidance signals to achieve fertilization.