Science. 1989 Mar 24;243(4898):1606-8. doi: 10.1126/science.243.4898.1606.
The secretory matrix of the stylar-transmitting tract of angiosperms has been characterized as a nutrient medium for the growth of pollen tubes, acting to guide tubes to the ovules. When nonliving particles (latex beads) were artificially introduced onto the transmitting tracts of styles of Hemerocallis flava, Raphanus raphanistrum, and Vicia faba, they were translocated to the ovary at rates similar to those of pollen tubes. Direct observations were made on the movement of individual beads along the secretory epidermis in the style and ovary of Vicia faba. The transmitting tract may play an active role in extending tube tips to their destination in the ovary.
被子植物珠柄传递道的分泌基质被认为是花粉管生长的营养介质，起到引导花粉管到达胚珠的作用。当非生命颗粒（乳胶珠）被人为引入萱草、萝卜和蚕豆花柱的传递道时，它们被运移到子房的速度与花粉管相似。我们对单个乳胶珠沿着蚕豆花柱和子房分泌表皮的移动进行了直接观察。传递道可能在将管尖延伸到子房的目的地方面发挥积极作用。
