Tubulin synthesis during spermatogenesis in the fern anema phyllitidis : demonstration with antitumulin
ABSTRACT:
The presence of tubulin in 10 days old reproductive prothalli of the frn anemia phyllitidis has been demonstrated with antitubulin antibodies. The immune-precipated protein migrates as a single band on SDS-polyacrylamide gel and has

Photostnthesis system of leptochloa fusca (L). kunth.
ABSTRACT:
Photosynthetic system of leptochloa fusca (L) kunth., was determined by observing its leaf anatomy, distribution of starch grains , measurement of CO2- compensation point and 13C/12C ratios. All diagnostic characters revealed that this grass has a C-4 pathway of photosynthesis.

Effect of phytotoxic air pollution on the amino acid content plants growing in Karachi area.
ABSTRACT:
The effect of air pollution on the amino acid content of plants growing in Karachi area was studied. Igh amino acid contents were observed in area javanica , alstonia scholaris, cassia holoserica , ficus benghalensis, F. religiosa, guaiacum officinale , mangifera indica, murraya paniculata, nerium oleander , polyalthia longifolia , prosopis juliflora, samanea saman and trachelospermum lucidum growing at gurumandir and cement factory area as compared to those growing at Karachi university campus. Eucalyptus sp. And prosopis glandulosa showed a minimum difference in amino acid content suggesting some mechanism of resistance against pollution.

The effect of sodium chloride and polyethylene glycol on
ABSTRACT:
Effect of NaCl and PEG, at iso- osmotic concenrations , on germination and water contents of two mungbean varieties was studied .

Effect of growth regulators on cotyledonary architecture of brassica juncea L.
ABSTRACT:
The major venation pattern in control as well as treated cotyledons of brassica juncea conforms to camptodromous type with festooned brochidodromous secondaries. The margibal ultimate venation is looped . the size of the areoles does not vary significantly . the cotyledonary area, size and number of trachields vary in different treatments ,. In MOR 25 ppm treated cotyledons, the density of trachields is maximum. The parenchymatous bundle sheath cells differentiated into trachieldal nodules are observed in GA 25 ppm. Miniature vessel elements without prominent secondary side wall thickening are observed in COL 25 ppm. The miniature vessel elements so far unreported at the vein endings are observed in DW , GA 50 ppm, MOR 25 ppm, 2,4-D 25 , 50 ppm, MH 25 ppm and COL 25 ppm. The occurrence of miniature vessel elements at the vein endings is an unusual feature. It is eident that MCR,

The embryology of richardia brasiliensis gomez. (syn . richardsonia pilosa H.B. AND K). (rubiaceae)-A reinvestigation
ABSTRACT:
Flowers of richardia brasiliensis gomez . are trimerous. Inferior ovary is tricarpellary and trilocular. Ovules are hemianatropous, unitegmic and tennuinucellate. The so-called strophiola is well developed. Development of anther wall layer is normal . the tapetal cells are uni- nucleate and glandular. Microspores are tetrahedral . mature pollen grains are shed at 3-nucleate stage. The nucellus is 1-3 celled . hypodermal archesporial cell functions as the megaspore mother cell. The chalazal megaspore of a tetrad is functional. Embryo sac development is polygonum type. Double fertilization is observed . the development of endosperm is nuclear type . the embryogeny conforms to the solanad type. Terminal cell of the suspensor appears to be haustorial. The seeds are albuminous.

Genetics of cyanogenesis , cyanoglucoside and linamarase
ABSTRACT:
The suggestion that lotus corniculatus plantsof stable phenotype for leaf cyanognesis were triplex or quadruplex whereas plants with

Phenotypic plasticity in spring oilseed
ABSTRACT:
Spring oilseed rape varieties bronowski and orpal differed ignificantly in all characters measured

Mutagenicity of argemone oil in field bean (dolichos lablab L.var. lignosus) I.A. comparative studt with DES
ABSTRACT:
Argemone oil is generally used as an adulterant of vegetable oil. In view of this , a comparative study was made with DES , based upon M1 biological effects and M2 chlorophyll mutations, which revealed argemone oil as a potent mutagen that may cause serious implications for the genetic hygiene of man.

Effect of plant density on grain yield and yield components of different varieties and mutant strains of rice.
ABSTRACT:
The spacings of 15 x 15 cm , 20 x 20 cm and 25 x 25 cm between hills and rows were compared for their effect on grain yield and yield components of two standard varieties IR6 and IR8 , and two mutant strains IR6-18 and IR8-5 of rice. These varieties and mutant strains possessed similar yield potential , while the increased spacing

Performance of two wheat ultivars in 1:1 mixtures with respect to grain yield and yield components.
ABSTRACT:
Plant competition studies with respect to grain yield and yield components were made on two spring wheat cuktivars , highbury and sappo grown in monocultures and in 1:1 mixtures at a range of densities (237 to 920 plant per sq.meter) and in different planting patterns using systematic fan design. Number of spikes and spikelets per plant and number and weight of grains per plant varied with the density for both the cultivars. Number of spikes was the most plastic and individual grain weight, the least plastic of the characters affected by density . generally , sappo was more vigorous and aggressive. Its aggressivvity , measured for yield components , increased with increasing degree of mixing of the cultivars..planting arrangements significantly affected the performance of cultivars but the differences did not always follow the trend from maximum (1 x1 planting pattern) to

Classification of pollen surf ace patterns of fossil proteaceae , using scanning electron microscope.
ABSTRACT:
The scanning electron microscopic study of 41 austrailian fossil pollen soecies , attributed to the family proteaceae, has revealed 11 main surface pattern types , 9 of these patterns are common to the pollen of modern proteaceae; however , 2 surface patterns i.e. scabro-rugulo- foveo-gemmate and scalbro-gemmo- ornate are exclusively present in the fossil proteaceae. The surface patterns in the fossil proteaceae, appearing first in the upper cretaceous and extending to the pilocene, reach greatest diversification in the Eocene with a subsequent decline taking place from Oligocene to pilocene. A new species proteacidites bioporatus is also described.

Classification of pollen surf ace patterns of modern proteaceae , using scanning electron microscope
ABSTRACT:
The scanning electron microscopic study of pollen exine surface pattern of proteaceaereveal 22 main pattern types.this study has manifested that many modern genera including nearlt all those with large number of species were not pollen-morphologically homogeneous. Such genera often lack unique combinations of pollen characters that could distinguish them from other genera of the family.

Germination studies of certain desert plants.
ABSTRACT:
Ecological studies with seeds of some desert species viz, achyranthes aspera L., peristrophe bicalyculata (Retz). Cassia holosericea fresn . and prosopis juliflora Swartz are described. Seedling growth was directly proportional to the seed size. The seed weight distribution was homogeneous and concentrated around the mean with low variation which implied greater interaspecofic compettion in populations of these speciies. Smooth and black seed coat of P. bicalyculata and hard seed coat of C. holosericea and P. juliflora appeared to impose dormancy on seeds. A aspera seeds germinated readily within 24 h and showed no dormancy. The dormancy of P. bicalyculata disappeared y dry storage for ca. 3 months . chemical treatments to seeds of cassia and prosopis improved germination but not to the extent ac by mechanical scarfication . the impact of dense clustering of seeds on germination showed negative response to dense clustering of C. holosericea which suggested the possibility of leaching

Phyto sosiological studies in wastelands of quetta-pakistan districts, Baluchistan , Pakistan.
ABSTRACT:
Using tabular comparison technique six plant communities , viz., harmala- hordeum murinum –poa annua, salsola kali- alhagi maurorum , kochia stellaris , salsola kali, peganum harmala- hordeum murinum and gaillonia eriantha-suaeda sp. Were recognized in the wastelands of quetta-pishin area.. the composition of vegetation was found to vary from community to community . soil samples obtained from these communities have been analysed for physical and chemical characteristics. Te soil of the study area was calcareous with basic reaction . it showed marked variation in texture, amounts of soluble ions, salinity and solidicity levels.

Toxic effects of copper and lead on a tropical
ABSTRACT:
Toxic effects of copper and lead on oscillatoria thiebautii (gomont et gomont) geither were studied .

Observations on ulothrix shameelii faridi (chlorophyta)
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Commensalic algae from snail shells
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Percurrently proliferating phialides in coelomycetes
ABSTRACT:
The morphology of conidiogenous cells in four coelomycetes genera, mastigosporella hyaline, stegonsporium ovatum , sphaerellopis filum and macrodiplodiopsis desmazieresii is described. Conidiogenous cells are characterized as percurrently proliferating phialides .

A cse report of microsporum ferrugineum infection In karachi
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