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 (763)
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

Rice productivity and soil hydrodynamic properties under lowland Elaeis guineensis and Borassus aethiopum: An asset rice agroforestry system

Sissou Zakari, Pierre Tovihoudji, Janvier Egah, Sékaro Amamath Boukari, Raymon Bio Gonga, Mouiz W. I. A. Yessoufou, Imorou F. Ouorou Barrè, Int. J. Biosci. 27(4), 177-190, October 2025.

Population dynamic parameters for Pseudupeneus prayensis (Mullidae) (Cuvier, 1829) in Ivorian continental shelf

Christian Bernard Tia, Abdoulaye Kone, Diomande Loua, Soumaïla Sylla, Essetchi Paul Kouamelan, Int. J. Biosci. 27(4), 169-176, October 2025.

Evaluation of phytochemicals and in vitro biological activities of Semecarpus kurzii leaf extract

Deepika, V. Ambikapathy, S. Babu, A. Panneerselvam, Int. J. Biosci. 27(4), 159-168, October 2025.

Comparative analysis of the influence of temporal, seasonal and behavioral factors using XGBoost for predicting traveled distances

Y. F. Lankoande, A. K. Gandema, S. Ouedraogo-Kone, A. Kone, Y. Sawadogo, J. Moses, Int. J. Biosci. 27(4), 150-158, October 2025.

The protective effect of black pepper (Piper nigrum) on liver enzymes in streptozotocin-induced diabetic rats

Amani A. R. Filimban, Khulud A. Wathi, Int. J. Biosci. 27(4), 140-149, October 2025.

Production of bioplastics (PHB) using waste paper as feed stock by Cupriavidus taiwanensis

Ajeena Davis, Jini Joseph, Int. J. Biosci. 27(4), 130-139, October 2025.

Gill ectoparasites of the mugilidae from the Ebrié lagoon, Abidjan (Côte d’Ivoire)

Eby Yoboué Gnamma Honorine Alla, Carel Wilfried Bermian Dibi-Ahui, Fidèle Kouassi Kouakou, Abouo Béatrice Adepo-Gourene, Int. J. Biosci. 27(4), 123-129, October 2025.

Impacts of diverse water management systems on growth and yield of two prominent boro rice cultivars in Bangladesh

Zahidul Islam, Md Ekhlasur Rahman, Md Khayrul Islam Bashar, Sharmin Sultana, Md Taharat Al Tauhid, Md Rabiul Islam, Md Shahed Hossain, Md Musa Mondal, Pradip Kumar Biswas, Int. J. Biosci. 27(4), 110-122, October 2025.