Growth behaviour, sex ratio and fruit output of Juniperus excelsa in Mastuj valley, District Chitral, Khyber Pakhtunkhawa, Pakistan

Paper Details

Research Paper 01/02/2013
Views (1069)
current_issue_feature_image
publication_file

Growth behaviour, sex ratio and fruit output of Juniperus excelsa in Mastuj valley, District Chitral, Khyber Pakhtunkhawa, Pakistan

Syed Mukaram Shah, Farrukh Hussain, Musharaf Khan
Int. J. Biosci. 3(2), 146-151, February 2013.
Copyright Statement: Copyright 2013; The Author(s).
License: CC BY-NC 4.0

Abstract

Study was conducted to examine growth behaviour, sex ratio and seed output of Juniperus excelsa in various parts of Mastuj valley, Khyber Pakhtunkhawa Pakistan. Average height, diameter and density of male, female and bisexual plants were determined. Seed output of female plants were found highest in Dodorghaz gol followed by Mastuj village and Ghuru gol. Number of fallen fruits were high in Dodorghaz gol followed by Mastuj village and Ghuru gol. Number of seedlings were high in Mastuj village followed by Ghuru gol and Dodorghaz gol. Soils were sandy loam and loamy sand with elements such as C, Ca, Mg, Si, Fe and K. These results strongly sustain genetically-determined sex ratios and a lack of major differences between males and females in growth behaviour and seed output which had been suggested by short-term studies elsewhere in the species’ range.

Ahmed M, Shaukat SS, Buzdar AH. 1990. Population structure and dynamics of Juniperus excelsa in Balouchistan. Journal of Vegetation Science 1(2), 271-276, http://dx.doi.org/10.2307/3235664

Ali A. 2003. Degradation of Juniper forests in the Hindukush Himalayan Region of District Chitral. Mountains of Pakistan: Protection, Potential and Prospects p. 65-72.

Auken OWV, Jackson JI, Jurena PN. 2005. Survival and Growth of Juniperus seedlings in Juniperus woodland. Plant Ecology 175(2), 247-257. http://dx.doi.org/10.1007/s 11258-005-0022-z

Borghesio  L,  Giannetti  F,  Ndang  ′ang′a  K, Shimelis A. 2004. The present conservation status of Juniperus forests in the South Ethiopian Endemic Bird Area. African Journal of Ecology . 42(2), 137-143, http://dx.doi.org/10.1111/j.1365-2028.2004.00511.x

Dar DH, Christensen KI. 2003. Gymnosperms of the western Himalaya. Pakistan Journal of Botany 35(3), 283-311.

Fisher M, Gardner AS. 1994. The status and ecology of a Juniperus excelsa subs+p. Polycarpos woodland in the northern mountains of Oman. Vegetation 119(1), 33-51.

Freeman DC, Mcarthur ED, Harper KT, Blauer AC. 1981. Influence of environment on the floral sex ratio of monoecious plants. Evolution 35, 194–197.

Gauquelin T, Bertaudiere-Montes A, Badri W, Montes N. 2002. Sex ratio and sexual dimorphism in mountain dioecious thuriferous Juniper (Juniperus thurifera L. cupressaceae). Botanical Journal of the Linnean Society 138(2), 237-244, http://dx.doi.org/10.1046/j.1095-8339.2002.138002237.x

Jordano P. 1991. Gender variation and expression of monoecy in Juniperus phoenicea L. (Cuppressaceae). Botanical Gazette. 152, 476–485.

Lawton RO, Cothran P. 2000. Factors influencing reproductive activity of Juniperus virginiana in the Tennessee Valley. Society, 127, 271–279, http://dx.doi.org/10.1046/10.2307/3088645

Lloyd DG, Bawa KS. 1984. Modification of the gender of seed plants in varying conditions. Evolutionary Biology 17, 255–338.

Sarangzai AM. 2000. Population structure and natural regeneration potential of Juniperus excelsa (M. Bieb) in northern Balochistan. Ph.D. Thesis. University of Balochistan, Quetta.

Schulz C, Jagel A, Stutzel T. 2003. Cone morphology in Juniperus in the light of cone evolution in cupressaceae. Flora 198(3), 161-177, http://dx.doi.org/10.1078/0367-2530-00088

Vasek FC. 1966. The distribution and taxonomy of three western junipers. Brittonia 18, 350–372.

Vasiliauskas SA, Aarssen LW. 1992.  Sex ratio and  neighbor  effects  in  monospecific  stands  of Juniperus   virginiana.   Ecology   73,   622–632, http://dx.doi.org/10.2307/1940768

Related Articles

First records of Macrogyrodactylus clarii and six species of Quadriacanthus (Monogenea) infecting Clarias gariepinus (Burchell, 1822) across four localities in Senegal

Arfang Diamanka*, Abdou Toure, Sikhou Drame, Cheikh Diop, Ngor Faye, Int. J. Biosci. 29(2), 118-128, August 2026.

Comparative predictive performance of anthropometric indices and associated risk factors for obesity among Beninese adults: A cross-sectional study

Ganlaky D. Boris, Sègbo Julien A. Gaetan*, Dossou David, Sossa J. Charles, Akpovi D. Casimir, Agbangla Clement, Int. J. Biosci. 29(2), 105-117, August 2026.

Proximate, mineral and vitamin composition of Uvaria chamae P. Beauv. (Annonaceae) seed flour from Korhogo, northern Côte d’Ivoire

Nyamien Yves Bleouh Jean*1, Anon Attoh Hyacinthe1, Diallo Koffi2, Biego Godi Henri3, Int. J. Biosci. 29(2), 97-104, August 2026.

Acute toxicity of seeds from Sphenostylis stenocarpa (Hochst ex A. Rich.) Harms

Wilfried Zanmenou*, Razack Osseni, Mahouglo Barnabé Houessou, Chimène Agrippine Rodogune Yelouassi, Comlan Kintomagnimessè Célestin Tchekessi, Philippe Sessou, Anatole Laleye, Pierre Dossou-Yovo, Int. J. Biosci. 29(2), 89-96, August 2026.

Stabilization of cashew apple juice with chitosan: clarification and microbiological quality

Kokora Aya Philomène*, Coulibaly Adama, Cissé Mohamed, Coulibaly Bintou, Konan N’guessan Ysidor, Godi Henri Marius Biego, Int. J. Biosci. 29(2), 76-88, August 2026.

Implementation and evaluation of limited face to face classes: basis for adoption of health and safety manual

Christian Jude B. Calunsag*, Int. J. Biosci. 29(2), 65-75, August 2026.

Baseline characterization of farming systems in the province of Bassitenga in Burkina Faso

Boly Ismaël Ardho*, Traoré Mamadou, Hema Alain Sabiriba, Sory Lallé Daouda, Int. J. Biosci. 29(2), 54-64, August 2026.