Issue · 1977
Vol. 27, Iss. 2
9 articles · All issues →
ArticlesReproductive physiology of Juniperus excelsa M. Bieb. 1-Pollen migration rate
A. Khalique, Shahida Perveen
The pollen dispersal Juniperus excelsa M. Bieb was studied on a single isolated tree. The pollen specimens were collected at the following distances from the source tree: 3, 6, 12, 24, 48 and 96 meters. The results showed that the pollen frequency at a distanc…
25 May 2024- Articles
Appearance of rudimentary carpel in Bauhinia variegata Linn.
Islam Mahmud Khan, Shaukat Islam, Qaisar Ali
Bauhinia variegata growing in Peshawar exhibits bicarpellary and tricarpellary, apocarpous condition. This character has been noticed and reported for the first time. The appearance of a rudimentary carpel ranges from 31% to 0% in the plants growing in the sim…
25 May 2024 - Articles
Trials on autumn silkworm rearing in Pakistan
Mian Mohammad Muslim
Autumn silkworm rearing of F-1 hybrid of Korean varieties: Jam x Jam 104 was conducted under local conditions during the months of August-September. 1975. The cocooning percentage (86) and cocoon shell ratio (20%) were found to be satisfactory
25 May 2024 - Articles
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25 May 2024 - Articles
Comparison of six poplar clones for growth and survival
Mahmood Iqbal Sheikh
In a study conducted to compare the rate of growth of sox different poplar clones over a period of 4 years, P. deltoids 1-63/51 gave the best performance. The rest of the clones in order of merit were: P. euramericana I-214 P. deltoids I-90/60, 1-72/51 I-69/55…
25 May 2024 - Articles
Chemical evaluation of Quercus ilex seed and oil
Fazli Wahid Khan, Pazir Gul, Abdul Ghaffar Marwat
Oil extracted from the seeds of Quercus ilex was analysed for its physicochemical constants and composition of fatty acids. The analytical data obtained were compared with those of oils from Q. incana, Q. ruba, and Q. palustris. It is concluded that the oil is…
25 May 2024 - Articles
Salt tolerance of forest tree species as determined by germination of seeds at different salinity levels
Sarfaraz Hussain Bangash
Salt tolerance studies were carried out on seeds and seedlings of six species: Acacia arabica, Albizzia lebbek. Parkinsonia aculeate, Prosopis spicigera, Robinia pseudoacacia, Zizphus jujube. The salt concentration was varied from 0.05% to 0.80% for all specie…
25 May 2024 - Articles
Population dynamics of Markhor in Chitral Gol
Abdul Aleem
Survey conducted to assess markhor population in Chitral Gol in January 1977 indicated the presence of 299 animals. As compared to 1975 estimation, an increase in male/female ratio was noticed whereas the number of young per female dropped to more than half. M…
25 May 2024 - Articles
Physical characteristics and utilization of Ak (Calotropis procera) fibres
Taj Ali Wazir, S. M. A. Shah
Two series of Ak samples, one collected at random from ten different sources at the flowering stage (July), and the other from Peshawar at various stages of maturity, were examined for a number of physical characteristics. A number of different methods of rett…
25 May 2024