Madhuri ji, none of your mails go into my spam folder; do not know about others. Have been receiving every mail of yours.
Other friends may comment accordingly. Regards. Dinesh On Sat, Jun 25, 2011 at 2:17 AM, Madhuri Pejaver <[email protected]>wrote: > > > > > ---Had gone in my spam. dont know whether the group received it. hence > sending again > Madhuri > > On *Wed, 22/6/11, Madhuri Pejaver <[email protected]>* wrote: > > Dear Shubhada > To start with > every organism has fixed number of chromosomes in each cell of the body, > which in deploid organisms we call 2n (two sets of ) chromosomes. During > sexual reproduction when gametes are formed the two sets seperate , thus the > gametes have only one set of chromosomes, n. When the two gametes fuse (like > pollen grain and ovule , or sperm with ovum) we again get a deploid cell > (n+n=2n) called zygote. This after repeated cell division and organ > formation form the individual. plant or animal. That is how we get half > chromosomes from father and half from mother. > Every new cell formed here after cell division is deploid. And then we say > race continues. > During the cell division every chromosome is attached to a spindle by a > fibre called spindle fibre. This pulls the chromosome to pole when the > chromosomes are in dividing state. > If the chromosome fails to attach to the fibre it fails to get incarporated > in new cells formed, either gamete or normal body cell. thus cells produced > are abnormal because they miss one or more chromosomes. > Sometimes the chromosomes in deviding state fail to detach from one another > and the whole lot go to one cell while the other cell gets nothing. the one > which gets nothing perishes, while the one get both sets is now abnormal > gamete having 2n number of chromosomes instead of n. When this gamete fuses > with other gamete of n type the zygote gets 3n which is called as polyploid. > this can happen in the body cells also. like in plants when the cells are > dividing during growth the chromosomes duplicate in each cell and seperate > into half. so each cell gets 2n. But sometimes if the duplicated chromosomes > are not seperated, -abnormal- then the resulting cell gets 4n > because chromosomes are already duplicated. such cell when form further > cells they all will have 4n chromosomes. polyploid cell from where new shoot > formed will be polyploid. > many a times it may result into triploi--3n, tetraploid--4n, > pentaploid--5n, hexaploid--6n, hectaploid7n, octaploid 8n ect. > polyploi result into gigantism that is big flowers, leaves etc. > when this occurs naturaly it is seen as what is seen in your Lily flowers. > This phenomenon is called as chromosome abberation > pl search googal for elustrations. > Dear Botanists and Zoologists pl forgive me for the use of crude language > and avoiding the bumbarding words. > thank you > Madhuri > --- On *Sat, 11/6/11, shubhada nikharge <[email protected]>*wrote: > > > From: shubhada nikharge <[email protected]> > Subject: Re: [efloraofindia:71359] The flower of Crinum latifolium with 12 > petals,12 stamens & 2 stigmas > To: [email protected] > Date: Saturday, 11 June, 2011, 9:16 AM > > Madhuriji, > thanks very much. pl. explain me in detail. i am not a botany student. > Cheers, > Shubhada > http://www.flickr.com/photos/shubhada_nikharge/sets/ > http://www.saveranibagh.org > "I cannot do everything, but still I can do something; I will not refuse to > do the something I can do." > > > > --- On *Fri, 10/6/11, [email protected] <[email protected]>*wrote: > > > From: [email protected] <[email protected]> > Subject: Re: [efloraofindia:71359] The flower of Crinum latifolium with 12 > petals,12 stamens & 2 stigmas > To: "shubhada nikharge" <[email protected]>, "Efloraindia" < > [email protected]> > Date: Friday, 10 June, 2011, 10:17 AM > > Might be a case of natural polyploidy. Where the chromosomes while division > of cells occur donot seperate. Leading to teraploidy and gigantism. If > details required may have to write separate mail. > Madhuri > Sent from BlackBerry® on Airtel > ------------------------------ > *From: *shubhada nikharge <[email protected]> > *Sender: *[email protected] > *Date: *Fri, 10 Jun 2011 00:05:44 +0530 (IST) > *To: *indian tree pix<[email protected]> > *Subject: *[efloraofindia:71359] The flower of Crinum latifolium with 12 > petals, 12 stamens & 2 stigmas > > Hi all, > The crinum lilies have bloomed after the 1st shower on 2nd June 2011. I > have been observing the plot at CEC, on BNHS land at Goregaon(East), Mumbai > for last 4 years where at least 20 -25 plants of Crinum latifolium sprout. > The flower of C. latifolium has 6 petals, 6 stamens, and 1 stigma. > I saw a very unusual flower of Crinum lily today which had 12 petals, 12 > stamens and 2 stigmas. I had never seen such flower in last 4 years. so > wanted to share with the pics. > > Cheers, > Shubhada > http://www.flickr.com/photos/shubhada_nikharge/sets/ > http://www.saveranibagh.org > "I cannot do everything, but still I can do something; I will not refuse to > do the something I can do." > >
