Reproductive indicators of two areas producing seeds in Pinus caribaea var. caribaea and Pinus tropicalis

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Published: Mar 9, 2017
Keywords:
Reproductive indicators, Pinus caribaea, Pinus tropicalis.

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Claudia Márquez Barrabé
Universidad de Pinar del Río "Hnos Saíz Montes de Oca".

Abstract

Two areas of seed production of two endemic species were evaluated from Cerro de Cabras of Pinus caribaea var. caribaea (P.cc) and Ceja del Negro of Pinus tropicalis (P.t) respectively to determine the reproductive behavior through a simple evaluation reproductive indicators. 50 cones from a pool of cones were collected from each species measuring the length and width of the cone and determined the variables: seed efficiency, seed potential, proportion of filled seeds, vain, aborted eggs and rudimentary eggs, and an estimator of inbreeding and the germination percentage. Seed efficiency of and seed potential were higher P.cc than for P.t and the ratio of filled seeds was 0.55 and 0.44 respectively for P.cc and Pt. However, the proportion of empty seeds was much higher in P.cc (0.18) than P.t (0.05) while the proportion of aborted ovules rudimentary P.t was higher than P.cc. The estimator of inbreeding was moderated to 25 % in P.cc while 11% P.t that could represent these areas may have limitations on the number of reproductive individuals to ensure the necessary levels for cross-pollinated species so that germination percentages were discreet.

Article Details

How to Cite
Márquez Barrabé, C. (2017). Reproductive indicators of two areas producing seeds in Pinus caribaea var. caribaea and Pinus tropicalis. Forestry and Environmental Sciences, 2(1), 21–29. Retrieved from https://cifam.upr.edu.cu/index.php/cifam/article/view/66
Issue
Vol. 2 No. 1 (2017): Enero-junio
Section
Scientific Original Article

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Author Biography

Claudia Márquez Barrabé, Universidad de Pinar del Río "Hnos Saíz Montes de Oca".

Estudiante de Ingeniería Forestal Quinto Año.

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