1 / 6

CONTROL OF FLOWERING

CONTROL OF FLOWERING. RESPONSE TO LIGHT FOR FLOWERING . LENGTH OF NIGHT CONTROLS SHORT-DAY & LONG-DAY PLANT FLOWERING PLANTS MUST FLOWER WHEN POLLINATORS ARE AVAILABLE & RESOURCES ARE PLENTIFUL PHYTOCHROMES (BLUE-GREEN PIGMENT) ARE CONTROLLED BY LIGHT. TROPISMS. GROWTH OR MOVEMENT

breena
Download Presentation

CONTROL OF FLOWERING

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CONTROL OF FLOWERING

  2. RESPONSE TO LIGHT FOR FLOWERING • LENGTH OF NIGHT CONTROLS SHORT-DAY & LONG-DAY PLANT FLOWERING • PLANTS MUST FLOWER WHEN POLLINATORS ARE AVAILABLE & RESOURCES ARE PLENTIFUL • PHYTOCHROMES (BLUE-GREEN PIGMENT) ARE CONTROLLED BY LIGHT

  3. TROPISMS • GROWTH OR MOVEMENT • RESPONSESTO DIRECTIONAL EXTERNAL STIMULI • COMMON STIMULI ARE CHEMICAL, GRAVITY TOUCH & LIGHT

  4. PHOTOTROPISIMDIRECTIONAL RESPONSE TO LIGHT • STEM RESPONSE IS + • ROOT RESPONSE IS – • IAA IS THE AUXIN THAT CAUSES + PHOTOTROPISM OF SHOOTS & SEEDLINGS • AUXINS IN SEED EMBRYOS, BUDS, & LEAF MERISTEM CAUSE MITOSIS

  5. AUXINS INCREASE FLEXIBILITY IN PLANT CELL WALLS IN YOUNG SHOOTS • THE RESPONSE IS CAUSED BY A REDISTRIBUTION OF AUXINS TO SIDE AWAY FROM LIGHT

More Related