Mikhail Chailakhyan

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Mikhail Khristoforovich Chailakhyan
Born 1902
Died 1991
Residence Soviet Union Soviet Union
Fields plant growth and development
Known for contributions to plant physiology and flowering

Mikhail Khristoforovich Chailakhyan (Armenian: Միքայել Քրիստափորի Չայլախյան, Russian: Михаи́л Христофо́рович Чайлахя́н) (1902–1991) was an Armenian-Russian scientist who is widely known for proposing the existence of a universal plant hormone that is involved in flowering.[1] He named this hormone florigen in 1936.[2] His studies included the mechanisms of flowering, tuberization and sex expression in plants. His pioneer work included the agricultural applications of phytohormones and synthetic analogs.[3]


  1. ^ Hooley, R. 2005. Book review: Phytohormones in Plant Biotechnology. Annals of Botany 95(5): 888. doi:10.1093/aob/mci096
  2. ^ Zeevaart JAD. 2006. Florigen Coming of Age after 70 Years. Plant Cell. 2006 August; 18(8): 1783–1789. doi:10.1105/tpc.106.043513
  3. ^ Aksenova, P. 2002. Problems of growth and development in the studies by M.Kh. Chailakhyan. Russian journal of Plant Physiology 49(4) 434-437.