Changes in the cellular morphology of bryopsis plumose (bryopsidophyceae) under high hydrostatic pressure and temperature.
ABSTRACT:
Influences of hydrostatic pressure (200- 800 atm ) and temperature )50-150C) applied for 5 hours were studied on the assimilating filaments of B. plumose (hunds) C.A.Ag; the after-effects were observed upto 3 weeks. The cell morphology of the filaments was found to be increasing Ly affected by the rising pressure. The physiological limits of tolerance of the alga were much lower than other observed seaweeds, it seems to be an extremely baophobic, pressure upto 400 atm produced reversible changes. But the higher ones rendered irreversible effects leading to the ultimate death of the thalli either immediately or after sometimes depending on the temperature . increasing temperature decreased the pressure effects.

Revision of some
ABSTRACT:
Six species and one variety of the genus

A phytocociological studt of gadap area. Southern sind.pakistan
ABSTRACT:
Twenty-two stands in gadap area southern sind were sampled quantitatively and soil samples were analysed physically and chemically . the leading dominant technique revealed the ecological affinities among the dominant species. Diversity analysis of leading dominant groups showed minimum diversity for cordia gharaf group and maximum for euphorbia caducifolia group. Species richness was mainly rresponsible for changes in general diversity whereas the equitability component was insignificant. Cover per acre (standing crop) and density per acre of perenntal species were found to be inversely related to diversity measures. Objective classification of vegetation disclosed three community types . community type l, confined to sandy plains, is dominated by pteropyrum olivieri, cordia gharaf and capparis decidua , and appears to be correlated with soils having moderate depth,

Role of dew in the survival and phenology of gossypium hirsutum L.CV. qalandri
ABSTRACT:
Twelve-week-old cotton plants (gossypium hirsutum L.CV. qalandri) were placed in a dew simulation chamber (12 h/night), after bringing the pot soil to permanent wilting percentage . defolation and concomitant shedding of flowers was noticed . subsequently , however , the plants repienished, reflowered and produced new leaves . the so-called negative transpiration was also recorded.

A relationship between competition and
ABSTRACT:
The phenomenon of competition among races od puccinia graminis tritici eriks and E.Henn., was studied . pairs of races

Vesicular- arbbusculart mycorrhizae in plants and endodonaceous spores in the soil of northen areas of Pakistan 1- hunza, nagar and gilgit
ABSTRACT:
The incidence of vesicular-arbuscular mycorrhizal in the roots and endodonaceous spores in rhizosphere of 128 plants belonging to 37 families collected from hunza. Nagar and gilgit states of Pakistan was investigated. Vesicular-arbuscular mycorrhizal were of general occurrence in all types of plants except few. VA mycorrhizal infection was also observed in 30 members of 10 families which were generally considered as non-mycorrhizal e.g. amaranthaceae( amaranthus hybriids ), chenopodiaceae ( chenopodium album , C. bitrys , C. foliosum, kochia indica), caryphyllaceae. (cerastium fontanum , stellaria media, silence vulgaris , arenaria, stercularia), cruciferae ( capsella bursapactoris, rorippa indica ), euphorbiaceae, (E. falcate. E prostrate), oxalidaceae ( axalis

Studies in the Turkish carob (ceratonia siliqual ). The level of gibberelling0like substances during fruit development
ABSTRACT:
Carob during its development , contained atleast two gibberellin-like substances . p2 and p4 with the former restricted to GA3 RF. Fruit exhibited active growth only after p2 had achieved its maximum level , so it was a cause and not its result. It exhibited a single peak. While p4 had two. One of the peak was during the dormant period of fruit growth and the other when the fruit had advanced well into its development. Gibberellins were not the main cause of fruit growth but complemented by auxins as well.

Effect of
ABSTRACT:
The effects of IAA and GA3 seperately

Revision of the family tamaricaceae from Pakistan . 1. The genera myricaria desv. And reaumuria linn
ABSTRACT:
The genera myricaria desv. And reaumuria linn. Are represented by five and four taxa, respectively in Pakistan. Mermania (L) desv.ssp. pakistanica qaiser is described here for the first time . R. panjgurica blatt. And halib. Is reduced to the subspective rank under R. alterifolia (labill) . britten (i.e. R.alterifolia (labill) . britten ssp. Panjgurica (blatt. And halib.) qaiser sts. Nov).

Some effects of density and fertilizer on the growth and competition of epilobium hirsutum and
ABSTRACT:
Seedlings of epilobium hirsutum and lythrum salicaria were grown 1,3,5,7,10 and 15 in apart in 30 square plots in the open sun and shade , separately and in mixture , on dry and wet sites. On the the dry site, E hirsutum did not survive at any density level both in the shade and in

Closterium in Peshawar valley
ABSTRACT:
Forty seven taxa of closterium have been described from Peshawar valley . all these taxa are new records for the country. The description is accompanied with a key for identification and camera lucida drawings.

Evaluation of general and specific combining ability from a four generation wheat diallel.
ABSTRACT:
The F1 , F2, backcross and selfed generations of a five parent complete diallel cross of common wheat (tritici aestivum L.) were used as materials in the study . the experimental data for two locations were analysed with respect to general and specific combining ability. The inter-location effects were assessed by factorial ANOVA and stability of five cultivars over two locations was evaluated through regression analysis. the Characters considered were : onset- of-heading . first heading heading-span, plant height, number of tillers per plant , number of spikellets per spike. Number of

Oedogonium in Peshawar valley
ABSTRACT:
Twenty two taxa of Oedogonium have been described from Peshawar valley of N.W.F.P. , Pakistan. A new species , O.ahmadii , and a subspecies , O.