Twenty-five trees selected in a large Blue pine stand in Burban Forest in Murree Forest Division were studied for xylem cell formation and seasonal variation in the amount of natural growth subs¬tanc...

Cells with wall ingrowths called transfer cells were observed in foot cells of sporophyte of Pteri- dium aquilinum L. Gametophytic cells contiguous with foot cells of sporophyte also possessed wall in...

Using Benzylaminopurine (2 mg/1) and NAA (0.8 mg/1) root callus of Rauwolfia...

Arachis hypogaea hypocotyl explants exhibited callus formation when inoculated on Murashige & Skoog (MS) medium supplemented with both an auxin and cytokinin. Although best callus resulted in 0.5 mg/1...

The effect of sodium chloride on the growth, phenolic, content and peroxidase activity of Tri ticum aestivum L. var. Chanab 70 was studied. High salt concentration retarded the root and shoot growth a...

Sand and gravel culture techniques were used to study the effect of irrigation with saline nutrient solution on dry matter yield and nutrient content of leaves and stems of cucumber, snake melon and p...

Effects of soil moisture tension on yield and biochemical composition of potato tubers cv. Cardinal were investigated. Under moisture tension of 60 and 80% AWR, normal tuber initiation was affected an...

A growth chamber study was conducted to...

The allelopathic potential of Fumaria indica (Hausskn.) Pugsley was tested in laboratory experi¬ments. The aqueous extracts from the plant parts significantly inhibited germination and growth of Trit...

Four plant communities were recognized in the Sabkha of Zuara. Sodium was the predominant cation in all sites yet on comparative basis following correlations are apparent: Limoniastrum – Salicornia ...

Three new leaf mutants, serrated leaf, unifoliate and narrow leaf were induced in mung bean, Vigna radiata (L) Wilczek, following seed treatments with different exposures of gamma irradiation. The ser...

The costata mutant in the pea is characterized by green veins and yellowish green interveinal areas. Eleven cases of induced mutation have been reported and possibly one spontaneous. Eight of these in...

Sixteen Lotus comiculatus populations growing at altitudes ranging from 1036 to 2209 m were sampled for leaf-cyanogenesis. The areas chosen for this purpose were the Murree Hills, the Jhelum and the S...

Comparative studies on the spontaneous mutation rate on eryr marker of wil& type cyanobac¬terium Anacystis nidulans and its UV sensitive (and UV resistant) mutants were carried out in order to determ...

The general morphology and structure of the seeds of 17 species of the Abutileae (Malvaceae) have been studied using light and scanning electron microscopy. Relevance of seed structure to the tribal d...

Cuscuta violaceus a new species of the family Cuscutaceae is described from Pakistan. During a review of the family Cuscutaceae in Pakistan, we examined all the herba¬rium specimens of genus Cuscuta ...

Fifty two species of algae belonging to Cyanophyceae (18 spp.), Chlorophyceae (10 spp.), Bacillariophyceae (21 spp.) and Euglenophyceae (3 spp.), found growing upon stones or submerged stones in fresh...

Coast of Pakistan is represented by 8 genera of the order Dicyotales viz., Dictyota Lamx., Dic- tyopteris Lamx., Dilophus J.Ag., Lobophora J. Ag., Padina Adanson, Spatoglossum Kiitz., Stoe- chospermum...

Toxic effects of copper and lead on a local diatom species Skeletonema costatum were studied using bioassay technique. Copper inhibited growth at a concentration of 10 Mg Cu I 1 and killed the cells a...

Out of 9 fungicides tested In Vitro Tecto-60...

The occurrence, distribution and relative abundance of fungi was examined in a trickling filter type sewage treatment plant of Karachi. At least 50 species of filamentous fungi belonging to 25 genera ...

Sixteen species of fungi were isolated and identified in the water samples of Yately Lake using hemp seeds as baits. Achlya americam, A. racemosa, Dictyuchus monosporus, Fusarium solani, Py- thium...

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