Semi-Autotrophic Hydroponic (SAH) Yam Tubers Harvested

Released Varieties of Yam
May 18, 2018
Yam Team Building Meeting
July 11, 2018

Semi-Autotrophic Hydroponic (SAH) Yam Tubers Harvested

Yam seeds produced from Semi-Autotrophic Hydroponics (SAH) plants are currently being harvested by the Yam Breeding team with some tubers weighing up to 1.1 kg. SAH plants were first transferred to the field on June 5, 2017 and harvested same year in November with a maximum tuber of yam weighing 470g. Based on the initial success, the fields were planted between Oct and Nov of 2017 and harvesting started in May 2018 when the plants were 6-7 months old.

SAH yam harvested from the field


SAH is a robust technique for efficient and rapid multiplication of clonal or vegetatively propagated crops with the potential to produce 720,000 plants per year. It is also a suitable tool that can enhance breeding activities.

It has been used for the production of seeds, particularly potatoes and cassava. It has also been used to produce multiple planting materials majorly for two varieties of D. rotundata and three varieties of D. alata.

Yam SAH boxes under LED light in shelve plates.

SAH technology is a low cost, licensed method for high ratio propagation of true-to-type virus free (VF) plants. The SAH facility for yam was initiated at IITA-Ibadan in April 2017, in the quest to expand the scope of technologies targeted at seed yam production and to complement the existing technologies which are being developed or refined to produce seed to meet the growing seed demand of yam growers in West Africa. The technology offers a fast multiplication rate, low cost of production, less than 2 % plant loss, and little contamination.

Pelemo Olugboyega, IITA Ph.D. student working on Yam multiplication explained that “The yield decline challenge occasioned by virus and nematode infection can be averted now that there are more alternative technologies that can deliver clean seed to farmers”.

New shoot formation occurs about 7 days or more after planting in SAH box

SAH also makes available a very robust and accommodating value chain which different cadre of seed growers can benefit from while growing the business of seed yam production among yam growers.


  1. Kolade Olufisayo says:

    This is a very good development

  2. Neal says:

    I spent a great deal of time to locate something like this

  3. Lawal Olatunde says:

    Great job! And well-done to all

  4. Martin Chiona says:

    Useful technology that is likely to benefit most of our countries.

  5. Asrat Amele says:

    Seems potential technology to break the seed bottleneck in yams. We need to test its potential and suitability to speedup the transistion from botanical seed to established seedlings in early generation breeding nurseries to harness genetic gain.

  6. ayanyemi ayodele says:

    This is a very good development for yam farmers like me,but is it accessible for farmers ?

Leave a Reply

Your email address will not be published. Required fields are marked *

Skip to toolbar