Plant regeneration from different explants in Helianthus smithii Heiser

Area of Science:

• Plant biotechnology and tissue culture.
• Agricultural science and crop improvement.

Background:

• Helianthus smithii is a wild sunflower relative.
• Understanding its regeneration potential is key for crop improvement.

Purpose of the Study:

• To investigate the morphogenic potential of Helianthus smithii explants.
• To establish efficient plant regeneration protocols for this wild sunflower species.

Main Methods:

• Leaf, rhizome, and stem explants were cultured on media with varying concentrations of α-naphthaleneacetic acid and 6-benzylaminopurine.
• Hormonal combinations were tested to induce somatic embryogenesis and shoot formation.

Main Results:

• Somatic embryos formed on media with auxins.
• Shoots developed on media with 6-benzylaminopurine alone.
• Fertile plants were regenerated from all explant types.

Conclusions:

• Helianthus smithii exhibits significant morphogenic potential.
• Successful regeneration protocols were established for this wild sunflower relative.
• The findings contribute to the genetic improvement of cultivated sunflowers.