Impact of Media on Air-layering in the Propagation of Dennettia tripetala (Annonaceae), and Its Micro-morphological Characteristics

  • Fred Bayo YAKUBU Department of Sustainable Forest Management, Forestry Research Institute of Nigeria, PMB 5054, Ibadan
  • Emmanuel Chukwudi CHUKWUMA Forest Herbarium Ibadan (FHI), Department of Forest Conservation and Protection, Forestry Research Institute of Nigeria, PMB 5054, Ibadan
  • Elizabeth Adetutu AWOSAN Department of Sustainable Forest Management, Forestry Research Institute of Nigeria, PMB 5054, Ibadan
Keywords: conservation; Dennettia; propagation; silviculture; taxonomy

Abstract

A systematic study was carried out on Dennettia tripetala to establish an alternative method of propagation and further provide complementary characters for the identification of the species especially in sterile conditions. All methods followed those of previous authors of related studies. Findings from the silvicultural aspect revealed that it is very possible to successfully propagate the species via air-layering, using good quality materials. Top soil performed better than saw dust substrate. The roots appeared and developed much faster than those of the saw dust, before it was harvested and potted.  Micro-morphological examination of the foliar epidermises also showed that the species is hypostomatic, while epidermal cells are predominantly polygonal, measuring 37.1 x 22.0 µm and 30.4 x 15.4 µm in size on the abaxial and adaxial surfaces respectively, and with straight to sinose anticlinal walls. Stomata is anomocytic, up to 32.2 x 17.6 µm in size. Wood is vesseless with tyloses present and gums totally absent. Ray multiserate. Pollen grains are predominantly spheroidal with scabrate surface and thin exine. Further studies on other aspects may reveal more useful information about D. tripetala.

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Published
2019-12-24
How to Cite
YAKUBU, F. B., CHUKWUMA, E. C., & AWOSAN, E. A. (2019). Impact of Media on Air-layering in the Propagation of Dennettia tripetala (Annonaceae), and Its Micro-morphological Characteristics. Notulae Scientia Biologicae, 11(4), 392-399. https://doi.org/10.15835/nsb11410494
Section
Research articles