GAMETIC TISSUE CULTURE ANDROGENESIS AND GYNOGENESIS

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Information about GAMETIC TISSUE CULTURE ANDROGENESIS AND GYNOGENESIS
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Published on November 18, 2017

Author: navdeeppau

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assignment On GAMETIC TISSUE CULTURE ANDROGENESIS AND GYNOGENESIS: assignment On GAMETIC TISSUE CULTURE ANDROGENESIS AND GYNOGENESIS SUBMITTED TO :DR. NAVDEEP SINGH JAMWAL SUBMITTED BY: RUPALI KOUNDAL B.Sc AGRICULTURE( 7 SEMESTER) PLANT TISSUE CULTURE (CROP PRODUCTION) Androgenesis: Androgenesis is the invitro development of haploid plants originating from totipotent pollen grains through a series of cell division and differentiation. There are two methods of androgenesis as under: 1) Direct Androgenesis: In this type, microscope behaves like a zygote and undergoes change to form embryoids which ultimately gives rise to plantlet. Androgenesis he Slide 3: 2) Indirect Androgenesis: In contrast to the direct androgenesis,the microspores, instead of undergoing embryogenesis, divide repeatedly to form callus tissues which differentiate into haploid plantlets. Gynogenesis: It is the formation of sporophyte from the female gametophyte on artificial medium. It is the process by which culturing of unfertilized ovaries to obtain haploid plants. First reported in barley by San Noem in 1976. Later works done in wheat ,rice ,maize,tobacoo etc….. Gynogenesis Major drawbacks Androgenesis: Highly genotype dependent. Relies on ability of microspore and mature pollen grain to covert their pathway Recalcitrance of some important agriculture species like woody plants, leguminous plants Major drawbacks Androgenesis Slide 8: THANK YOU

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