Very good. Thanks for sharing. Dr Satish Phadke
On 3 October 2013 21:27, Balkar Singh <balkara...@gmail.com> wrote: > Very useful Information Pankaj ji and Rawat Ji. Thanks for sharing > > > On Thu, Oct 3, 2013 at 4:32 PM, Pankaj Kumar <sahanipan...@gmail.com>wrote: > >> Yes sir, Orchids are lithophytes too, I missed it, but I include them >> into epiphytes. >> I will write abt micorrhiza soon... >> Thanks so much for the suggestions. Keep more coming :) >> Pankaj >> >> On Thu, Oct 3, 2013 at 5:55 PM, D.S Rawat <drdsrawat.alpin...@gmail.com> >> wrote: >> > Pankaj Ji through some light on Orchididaceous mycorrhiza; it will be >> > interesting. >> > DSRawat Pantnagar >> > >> > >> > On Thursday, October 3, 2013 11:00:32 AM UTC+5:30, Dr Pankaj Kumar >> wrote: >> >> >> >> Orchids are very unique and they are found in wide range of habitats >> >> at diverse elevations. >> >> Still they are highly sensitive. They can be EPIPHYTIC (growing on >> >> other trees- not as parasite); TERRESTRIAL (growing on ground); >> >> AQUATIC (growing in water); SEMI-AQUATIC (growing near water or in >> >> areas which are waterlogged for significant duration of the year); >> >> SUB-TERRENEAN (growing completely below ground). >> >> >> >> They occupy great range of elevations depending on the region of earth >> >> they are found. >> >> People say that epiphytic orchids are not found at higher elevations. >> >> But this is not true. Some taxa like Dendrobium brevicaule are found >> >> upto 4000m elevation. Overall, terrestrial orchids reach much higher >> >> elevation that epiphytic ones. >> >> >> >> Orchids occupy wide range of habitats. However the diversity is lower >> >> in homogenous vegetation where as it is higher in heterogenous >> >> forests. Highest diversity is found in warm and humid areas like >> >> tropical rain forests. >> >> >> >> One of the main reasons for their high diversity and wide distribution >> >> is the absence of endosperm in the seeds. Hence they are very light >> >> and can be carried to greater distance by wind. When they fall in new >> >> area, they either adapt well or they die. In rare cases they try to >> >> customize themselves to the new environment giving rise to a new >> >> species over a long period of time. Orchids are cross pollinated and >> >> natural hybrids are known to occur in wild. Cross pollination helps in >> >> maintaining high genetic diversity within and between different >> >> populations. >> >> >> >> Regards >> >> Pankaj >> >> >> >> -- >> >> *********************************************************** >> >> Pankaj Kumar, Ph.D. >> >> IUCN-SSC Orchid Specialist Group Asia >> >> >> >> Office: >> >> Conservation Officer >> >> Orchid Conservation Section >> >> Flora Conservation Department >> >> Kadoorie Farm and Botanic Garden (KFBG) Corporation >> >> Lam Kam Road, Tai Po, New Territories, Hong Kong. >> >> Residence: >> >> 151, 1st Floor, Tai Om Tsuen >> >> Lam Tsuen, Tai Po, New Territories, Hong Kong. >> >> >> >> email: pku...@kfbg.org; sahani...@gmail.com >> >> Phone: +852 2483 7128 (office - 8:30am to 5:00pm); +852 9436 6251 >> >> (mobile). Fax: +852 2483 7194 >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups >> > "efloraofindia" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an >> > email to indiantreepix+unsubscr...@googlegroups.com. >> > To post to this group, send email to indiantreepix@googlegroups.com. >> > Visit this group at http://groups.google.com/group/indiantreepix. >> > For more options, visit https://groups.google.com/groups/opt_out. >> >> >> >> -- >> *********************************************************** >> Pankaj Kumar, Ph.D. >> IUCN-SSC Orchid Specialist Group Asia >> >> Office: >> Conservation Officer >> Orchid Conservation Section >> Flora Conservation Department >> Kadoorie Farm and Botanic Garden (KFBG) Corporation >> Lam Kam Road, Tai Po, New Territories, Hong Kong. >> Residence: >> 151, 1st Floor, Tai Om Tsuen >> Lam Tsuen, Tai Po, New Territories, Hong Kong. >> >> email: pku...@kfbg.org; sahanipan...@gmail.com >> Phone: +852 2483 7128 (office - 8:30am to 5:00pm); +852 9436 6251 >> (mobile). Fax: +852 2483 7194 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "efloraofindia" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to indiantreepix+unsubscr...@googlegroups.com. >> To post to this group, send email to indiantreepix@googlegroups.com. >> Visit this group at http://groups.google.com/group/indiantreepix. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > > > -- > Regards > > Dr Balkar Singh > Head, Deptt. of Botany and Biotechnology & > Horticulture Incharge > Arya P G College, Panipat > Haryana-132103 > 09416262964 > > -- > You received this message because you are subscribed to the Google Groups > "efloraofindia" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to indiantreepix+unsubscr...@googlegroups.com. > To post to this group, send email to indiantreepix@googlegroups.com. > Visit this group at http://groups.google.com/group/indiantreepix. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. 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