A Reevaluation of Tree Model, Inflorescence Morphology, and Sex Ratio in Lychee (Litchi Chinensis Sonn.)

in Journal of the American Society for Horticultural Science
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  • 1 Department of Crop Production and Soil Science, University of Pretoria, Pretoria, 0002, South Africa
  • | 2 Institute For Tropical and Subtropical Crops, Private Bag X 11208, Nelspruit, 1200, South Africa
  • | 3 Maroochy Horticultural Research Station, Queensland Department of Primary Industries, P.O. Box 5083, Sunshine Coast Mail Centre, Nambour, Queensland, 4560, Australia

The architecture of the lychee tree and the structure of the inflorescence are described according to the terminology of Hallè et al. and Weberling. The lychee tree has rhythmic modular growth and the inflorescence is a heterocladic pleiothyrsoid. Additional paracladia may develop from a second serial bud below the first-order paracladia. Male and female flowers are borne at variable positions on the dichasia. The relation between the position and gender of the flowers on the partial inflorescences (dichasia) varied with cultivar and time.

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