Some flowers reject pollen produced by the same plant. Why do plants do this?
Pretty much the same reason you don't marry your sister. It prevents inbreeding, allows more diversity of genetic material.
Thursday, January 26, 2012
Some flowers reject pollen produced by the same plant. Why do plants do this?
Self-incompatibility - a mechanism in some angiosperms to reduce self-fertilization and increase outbreeding.
Some flowers reject pollen produced by the same plant. Why do plants do this?
Pretty much the same reason you don't marry your sister. It prevents inbreeding, allows more diversity of genetic material.
refill
Some flowers reject pollen produced by the same plant. Why do plants do this?
Pretty much the same reason you don't marry your sister. It prevents inbreeding, allows more diversity of genetic material.
If pollen is taken by bees from poisonous plants such as hemlock or foxgloves, will the honey be poisonous?
Yes, although the toxin must be present in the nectar. Rhododendron and Kalmia nectars produce toxic honey, for instance, as do honey from many other members of the Ericaceae like Ledum. Coriaria and Aesculus are other plants with toxic nectars that can give rise to toxic honey.
If pollen is taken by bees from poisonous plants such as hemlock or foxgloves, will the honey be poisonous?
Bees make honey from the nectar extracted from a flower not its pollen. The way toxins in nectar influences a honeybee’s willingness to eat floral nectar has been investigated by a team led by Dr Geraldine Wright (Newcastle University).
Honeybees were found to be endowed with the ability of making a connection between almost any color, shape, texture or scent with food.
The new analysis on the honeybee genome has showed that honeybees have relatively few genes for taste receptors compared to other evolved insects of a similar size like those from the Diptera Order (which includes flies and mosquitoes).
That's why researchers have thought that perhaps honeybees had a decreased need to track down and learn about toxins, even if some floral nectar is toxic.
But the new research carried out by Wright's team points out that honeybees could have the ability to detect the toxins, even if they are not able to taste them.
The team discovered that both the carbohydrates level and the toxin presence in nectar influenced a honeybee’s memory for learned odors.
Honeybees learned not to react to odors linked with toxins within 20 min of ingesting toxins, and this behavior will be kept up to 24 hours after the first contact with a toxin.
Reply:No. Only certain parts of those plants are toxic. Think about it: if the nectar in their flowers were toxic, how would the bees be able to gather it , and incidentally, pollinate 'em, without dying?
Reply:...
Reply:yeah, (in response to above), you mean isnt ALLAH and his creations wonderful?
Reply:No.
Bees process it before it is harmful to us.
Isn't creation wonderful?
What are some of the best hotels
If pollen is taken by bees from poisonous plants such as hemlock or foxgloves, will the honey be poisonous?
Bees make honey from the nectar extracted from a flower not its pollen. The way toxins in nectar influences a honeybee’s willingness to eat floral nectar has been investigated by a team led by Dr Geraldine Wright (Newcastle University).
Honeybees were found to be endowed with the ability of making a connection between almost any color, shape, texture or scent with food.
The new analysis on the honeybee genome has showed that honeybees have relatively few genes for taste receptors compared to other evolved insects of a similar size like those from the Diptera Order (which includes flies and mosquitoes).
That's why researchers have thought that perhaps honeybees had a decreased need to track down and learn about toxins, even if some floral nectar is toxic.
But the new research carried out by Wright's team points out that honeybees could have the ability to detect the toxins, even if they are not able to taste them.
The team discovered that both the carbohydrates level and the toxin presence in nectar influenced a honeybee’s memory for learned odors.
Honeybees learned not to react to odors linked with toxins within 20 min of ingesting toxins, and this behavior will be kept up to 24 hours after the first contact with a toxin.
Reply:No. Only certain parts of those plants are toxic. Think about it: if the nectar in their flowers were toxic, how would the bees be able to gather it , and incidentally, pollinate 'em, without dying?
Reply:...
Reply:yeah, (in response to above), you mean isnt ALLAH and his creations wonderful?
Reply:No.
Bees process it before it is harmful to us.
Isn't creation wonderful?
What are some of the best hotels
Is Bee Pollen really good for you?
Just curious to know any benefits at all of adding bee pollen to my diet.
Is Bee Pollen really good for you?
Yes it is good for your immune system.
Reply:I've heard that it is good for you.
Is Bee Pollen really good for you?
Yes it is good for your immune system.
Reply:I've heard that it is good for you.
Are pollen masks effective for preventing allergies leading to asthma?
My 4 yr old son has just been diagnosed with asthma. It was a nightmare to see him struggle for air that one time when he had a sever attack.
Now I am looking alternative ways to make his life as normal as possible since putting him in a BUBBLE is quite out of this world. I have been giving him a daily dose of 'claritin' to prevent pollen allergies (i will stop once pollen is low, it is quite high in houston, tx now). I have purchased air ionizers for each room in the house. I now vacuum once daily using my newly purchased 'walter filtration vacuum'. Seriously, a bubble would have been cheaper to purchase.
Since I cannot prevent him from going outside to play with his friends, I would like to know if pollen masks are effective. Has anyone tried it?
Are pollen masks effective for preventing allergies leading to asthma?
Allergen masks are good for temporary relief but its not good to wear them for hours at a stretch.Check with your child's doctor before experimenting with them.As hard as it seems you really do need to keep him out of the range of his allergens on days when the allergy index is high.Encourage your child to find fun and creative uses for his time indoors,tv should be limited and having crafts,hobbies,puzzles or other mental and learning activities should be encouraged this will help ease stress.Air filters are very important as well.As far as going out to play with his friends are concerned,why not have his friends over on particularly bad days ALLERGY WISE.Otherwise encourage your child to play outdoors later in the day when the allergy levels tend to dive down.And make sure your child stays inside when he is having a flair.
Now I am looking alternative ways to make his life as normal as possible since putting him in a BUBBLE is quite out of this world. I have been giving him a daily dose of 'claritin' to prevent pollen allergies (i will stop once pollen is low, it is quite high in houston, tx now). I have purchased air ionizers for each room in the house. I now vacuum once daily using my newly purchased 'walter filtration vacuum'. Seriously, a bubble would have been cheaper to purchase.
Since I cannot prevent him from going outside to play with his friends, I would like to know if pollen masks are effective. Has anyone tried it?
Are pollen masks effective for preventing allergies leading to asthma?
Allergen masks are good for temporary relief but its not good to wear them for hours at a stretch.Check with your child's doctor before experimenting with them.As hard as it seems you really do need to keep him out of the range of his allergens on days when the allergy index is high.Encourage your child to find fun and creative uses for his time indoors,tv should be limited and having crafts,hobbies,puzzles or other mental and learning activities should be encouraged this will help ease stress.Air filters are very important as well.As far as going out to play with his friends are concerned,why not have his friends over on particularly bad days ALLERGY WISE.Otherwise encourage your child to play outdoors later in the day when the allergy levels tend to dive down.And make sure your child stays inside when he is having a flair.
Cann pollen allergies make you tired?
Since the middle of March 2008 I believe my allergy to tree pollen has zapped my energy and made tired. Some days are better than others. My eyes are srating to get red and droopy and I feel like Want to close them all the time. Is this tiredness part of seasonal allergies?
Cann pollen allergies make you tired?
Can be. Pollen causes histamines to work over time. Any extra energy your body uses will affect your fatigue.
Reply:wow. i have been wondering the same thing. ive been so tired lately. i think it is the pollen. Does anyone know when the pollen will subside?
Reply:Yes and I am sorry. Not only do allergens wreak havoc in our bodily systems, it makes us exhausted. I have gone to taking a multi-vitamin, a B complex (50mg or 100mg), and B2 (50mg or 100mg). The B's are great NATURAL energy boosters.
Have you spoken to your doctor lately? There are several allergy medicines out there today that can help you fight this war. Pill forms come in (but not limited to) Allegra, Zyrtec (OTC), Claritin (OTC), and Singulair. There are nasal sprays and eye drops that can help.
Personally, I would suggest that you check at the local Food Coop for natural remedies. Check online too for ideas -- I just started with Bioallers Nasal Allergy Spray. I can not wait to see how, in the long run, it works out.
Reply:absolutely. being tired or fatigue is one of the less talked about and commercialized symptoms of allergies. try some Zyrtec (brand name or store brand-I've been using CVS's generic). I've been a fan of it since it was first introduced as a prescription back in the mid 90's. take one every night for a month or 2 or til everything stops blooming. you should feel better after the 3rd-4th day, once it really gets into your system.
Good Luck!
Cann pollen allergies make you tired?
Can be. Pollen causes histamines to work over time. Any extra energy your body uses will affect your fatigue.
Reply:wow. i have been wondering the same thing. ive been so tired lately. i think it is the pollen. Does anyone know when the pollen will subside?
Reply:Yes and I am sorry. Not only do allergens wreak havoc in our bodily systems, it makes us exhausted. I have gone to taking a multi-vitamin, a B complex (50mg or 100mg), and B2 (50mg or 100mg). The B's are great NATURAL energy boosters.
Have you spoken to your doctor lately? There are several allergy medicines out there today that can help you fight this war. Pill forms come in (but not limited to) Allegra, Zyrtec (OTC), Claritin (OTC), and Singulair. There are nasal sprays and eye drops that can help.
Personally, I would suggest that you check at the local Food Coop for natural remedies. Check online too for ideas -- I just started with Bioallers Nasal Allergy Spray. I can not wait to see how, in the long run, it works out.
Reply:absolutely. being tired or fatigue is one of the less talked about and commercialized symptoms of allergies. try some Zyrtec (brand name or store brand-I've been using CVS's generic). I've been a fan of it since it was first introduced as a prescription back in the mid 90's. take one every night for a month or 2 or til everything stops blooming. you should feel better after the 3rd-4th day, once it really gets into your system.
Good Luck!
Are your allergies dreading the coming springtime weather and pollen?
Please keep the blossom away. It may look pretty, but it hates me.
I have this stupid allergy to just blossom. I break out just looking at the damn stuff. ??
Are your allergies dreading the coming springtime weather and pollen?
Yes!! As it is, we just moved to an area where I have to take 2 Benedryl a day. I will probably be up to 4 a day soon!!
Reply:NO WAY bring them on after 6 months of winter and another one to go, it's no problem I'll deal with it, the cabin fever is driving me crazy. lol
Reply:Here in Florida, we are already a mess. The Oak pollens are out in force. There is a fine yellow powder all over everything each day. I can't wait to clean it out of the pool filter.
choosing ice skatesblushed
I have this stupid allergy to just blossom. I break out just looking at the damn stuff. ??
Are your allergies dreading the coming springtime weather and pollen?
Yes!! As it is, we just moved to an area where I have to take 2 Benedryl a day. I will probably be up to 4 a day soon!!
Reply:NO WAY bring them on after 6 months of winter and another one to go, it's no problem I'll deal with it, the cabin fever is driving me crazy. lol
Reply:Here in Florida, we are already a mess. The Oak pollens are out in force. There is a fine yellow powder all over everything each day. I can't wait to clean it out of the pool filter.
choosing ice skates
Does the fact that plants produced pollen early this year mean that they will finish earlier?
The pollen season and therefore the hayfever season started early this year. Does this mean that plants will stop producing pollen earlier or will they have an extended pollen season?
Does the fact that plants produced pollen early this year mean that they will finish earlier?
It is my understanding that the allergy season is going to be pretty bad this year. I also think it depends on where you live. I am in Northern California and it did not rain much this past season. Things bloomed early and as a result... allergies have been bad. The high counts earlier have been for trees, so just imagine, grass and other allergens are still to come into full stregnth. Here in CA because of the warm weather we are now experiencing rapid growth of grasses. If you allergic to those, you will still be suffering. As someone who suffers pretty much year round... this season has been brutal! I don't believe pollen production comes to a complete stop, it just slows down... and as long as the weather is warm... it will not slow down until it cools down. For relief, just make sure to have your allergy meds at hand. If you don't get enough relief from them, ask your Dr. to give you samples of others to try. 1 med doesn't fit all. If you are an asthmatic who suffers with the allergies, I have found advair to help with asthma symptoms. Flonase is also another good med if you don't mind squiting it into your nose (this one is for allergies). GOOD LUCK %26amp; RELIEF!
Does the fact that plants produced pollen early this year mean that they will finish earlier?
It is my understanding that the allergy season is going to be pretty bad this year. I also think it depends on where you live. I am in Northern California and it did not rain much this past season. Things bloomed early and as a result... allergies have been bad. The high counts earlier have been for trees, so just imagine, grass and other allergens are still to come into full stregnth. Here in CA because of the warm weather we are now experiencing rapid growth of grasses. If you allergic to those, you will still be suffering. As someone who suffers pretty much year round... this season has been brutal! I don't believe pollen production comes to a complete stop, it just slows down... and as long as the weather is warm... it will not slow down until it cools down. For relief, just make sure to have your allergy meds at hand. If you don't get enough relief from them, ask your Dr. to give you samples of others to try. 1 med doesn't fit all. If you are an asthmatic who suffers with the allergies, I have found advair to help with asthma symptoms. Flonase is also another good med if you don't mind squiting it into your nose (this one is for allergies). GOOD LUCK %26amp; RELIEF!
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