Dear all, Related to this colour changes i will like to put forth one thought. According to me it the somatic mutation. Mutations are the one which appear suddenly without any clue in previous generation. If these mutations occur in gametes then they carried forward in future generations but if thy occur in somatic cells then are seen in only those organisms. If some changes occur while the flower bud is getting formed, part of the flower gets the chromosomes with genes producing the original colour say white, while other portion may get the chromosomes with genes producing pink colour. When the flower opens the colours will be seen accordingly as partly pink and partly white. Since this is somatic mutation it will not be passed on further, and ends with that flower. In cross fertilization if the pollen grain from plant bearing yellow flower, fertilizes the ovule from the plant bearing magenta flower we may get the flower with yellow and magenta colour. This is very commonly seen in 4 o clock plant Mirabilis jalapa. You can see many many mixtures of colour shades. In animals if this happens we sometimes get gynandromorphs, where half side will be male and half female. For example in clover butterflies female has white colour wings and male yellow colour. In gynander we can see white wings on one side of the body and yellow on other. of course this is the example of chromosomal abberation. This phenomenon is known as moseisisum. Experts please varify. Madhuri On Tue, 15/9/09, Devendra Bhardwaj <[email protected]> wrote:
> From: Devendra Bhardwaj <[email protected]> > Subject: [indiantreepix:18366] hibiscus id Options > To: "indiantreepix" <[email protected]> > Cc: [email protected], [email protected], [email protected], > [email protected] > Date: Tuesday, 15 September, 2009, 6:26 AM > > > Forwarding > again for observations on this Hibiscus pl. > Earlier > relevant feedback: > > Yes the > white ones are quite common (also in our garden) and > sometimes we > have found them turning pink (like one of your two flowers) > and sometimes a > combination (attached). > I was > unable to explain this phenomenon and had asked for help > here earlier. > rakesh > > Hi Rakesh, > They look beautiful. I think it must be a rare plant grown > out of > seeds that were accidentally pollinated by beas. > Regards > Yazdy. > Thanks Yazdy and > Max. > I have > seen this phenomenon occuring with other plants having white > hibisci > although perhaps in them they appear consistently but in > mine they appear > randomly > once in 6 months or one year. > This > random appearance after a prolonged absence makes it all the > more > curious. So to quote Max, is it getting infected by a virus > from time to > time? > rakesh > > Streaks or patches > like this in flower colour are often caused by a virus. I > used to grow carnations for sale and if my stocks got > infected with a virus, the orange or yellow blooms would > have streaks of red. Apparently this comes from a red > ancestor and the virus activates dormant genes. > > Max > > Yes > the white ones are quite common (also in our garden) and > sometimes we have found them turning pink (like one of your > two flowers) and sometimes a combination (attached). > > I was > unable to explain this phenomenon and had asked for help > here earlier. > rakesh > > This could be > because of Chimera. > Naresh > Pancholi > would request all > who have sent their observations on this Hibiscus > species: to look at the size of leaves, the dentation of > leaves, colour of > leaves, habit of the plant, size of stipules, petiole > length, peduncle > length. These are being neglected while commenting on this > plant and every > one is just talking about flower colour. > Dr. > Gurcharan Singh > > See the Web's breaking stories, > chosen by people like you. Check out > Yahoo! Buzz > > > > > > Love Cricket? Check out live scores, photos, video highlights and more. Click here http://cricket.yahoo.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "indiantreepix" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.co.in/group/indiantreepix?hl=en -~----------~----~----~----~------~----~------~--~---
