709515
Description
Mind Map by emilyhs101, updated more than 1 year ago
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Created by emilyhs101
about 10 years ago
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Plant hormones in
agriculture and
horticulture (Pg 37)
- Plant hormones can be applied to plants to
either speed up or slow down their growth.
- Weedkillers
- Auxins are used as selective weedkillers. Agent
orange was used in the Vietnam war. It made trees
loose their leaves. Without leaves, plants cannot
make food and the trees die.
- Auxins are used as selective weedkillers. Agent
orange was used in the Vietnam war. It made trees
loose their leaves. Without leaves, plants cannot
make food and the trees die.
- Rooting powder
- If cuttings are dipped into auxin powder,
this helps the cuttings make new roots.
With new roots the cuttings can anchor in
the soil and take up water and minerals.
- If cuttings are dipped into auxin powder,
this helps the cuttings make new roots.
With new roots the cuttings can anchor in
the soil and take up water and minerals.
- Fruit ripening
- Auxin can be sprayed onto fruit trees to prevent the ripe fruit
from dropping. Then it can all be harvested at the same time
and the fruit is not bruised by falling on the ground. If a high
dose of auxin is sprayed later, it makes the fruit fall.
- Auxin can be sprayed onto fruit trees to prevent the ripe fruit
from dropping. Then it can all be harvested at the same time
and the fruit is not bruised by falling on the ground. If a high
dose of auxin is sprayed later, it makes the fruit fall.
- Control of dormancy
- Seeds are usually dormant when they are shed from the parent plant. This stops them
germinating at the end of the summer, as new plants may not survive the harsh winter. However if
commercial growers want to germinate seeds in green houses during winter, applying auxin can
break the dormancy.
- Seeds are usually dormant when they are shed from the parent plant. This stops them
germinating at the end of the summer, as new plants may not survive the harsh winter. However if
commercial growers want to germinate seeds in green houses during winter, applying auxin can
break the dormancy.
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