A Detailed Study on the Floral Biology and Fruiting of Cycad circinalis in Nigeria

The Nigerian Institute for Oil Palm Research (NIFOR) in Benin City was the first to introduce the Cycas circinalis to the nation. In Nigeria, Cycas circinalis has thrived as an ornamental plant. It belongs to the Cycadophyta division, the Cycadopsida class, the Order Cycadales, the family Cycadaceae, and the genera Cycas. It was only in 1995 that it was recognised as a distinct species. Sago palm, Fern palm, Cycad, or Starch palm are some of its other names. The plant’s floral biology is cone-like, with a whorl of premature pinnate fronds embedded within the cone, similar to other cones in the Order Cycadales. As the inflorescence reaches anthesis, this cone opens up and extends out, exposing the whorl of young leaves that will form the new generation crown. The total number of fully developed fruits per stalk is 9.0, with an average fruit length of 5.24 cm and a diameter ranging from 8.6 to 9.6 cm. Fruit weights range from 19.2 to 22.10 g (mean = 21.6 g), dehusked fruit lengths range from 4.1 to 5.0 cm, and dehusked fruit circumferences range from 7.1 to 8.0 cm. Dehusked fruit had an average diameter of 7.53 cm. The dehusked fruit weighs between 9.7 and 18.6 g, with an average of 13.9 g.

Author (s) Details

J. O. Odewale
Plant Breeding Division, NIFOR, P.M.B. 1030 300001, Benin City, Nigeria.

Agho Collins
Plant Breeding Division, NIFOR, P.M.B. 1030 300001, Benin City, Nigeria.

E. I. Eziashi
Plant Breeding Division, NIFOR, P.M.B. 1030 300001, Benin City, Nigeria.

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