The genus alotis rafin . is recognized from Pakistan . six new combinations are proposed : A. falconeri (Clarke) omer. Qaiser and ali ; A. maddeni (Clarke) omer , qaiser and ali ; A. moorcroftiana (...

A palynological study of 64 species belonging to 40 genera of the family gramineae from Karachi was conducted . the family is stenopalynous and the pollen are spheroidal , usually monoporate, ratel...

Chromosome counts are reported for 32 species belonging to 23 genera (in 8 tribes) of the family compositae from Pakistan . of these, counts for 4 taxa viz, lactuca remotiflora DC, pluchea arguta bois...

Chromosome numbers are reported for 12 species of abutilon mill, from Pakistan of which four species are cytologically investigated for the first time viz., A. alii S. abedin (n=21), A. figarianum w...

The stability analysis in 14 genotypes for seed yield of chickpea was response of G X E interaction was evaluated . the linear component of interaction was more important than non linear component....

Aqueous extracts ant leachates from senesced anthers of bombax ceiba L., was tested for its effect on seed germination and seedling growth of lettuce . the inhibitors isolated from anthers were w...

Allelopathic effect of Silybum marianum gaertn , was studied in laboratory and field experiments . the aqueous extracts from different plant parts sognificantlt inhibited seed germination and radicl...

Shoot tips excised from apical and axillary buds of date palm varieties dhakki, khudrawi and zahidi showed shoot proliferation on MS medium supplemented with GA3 where complete plantlets were obta...

Seedlings of 18 winter wheat cvarieties produced at 2 distinctly locations, were compared for physiological differences during germination . varities were significantly different (P=0.01) from each...

Seed samples of trigonella foenum- graecum (fenugreek) obtained from 7 countries were analyzed for seed-borne mycoflora . of the 23 samples examined , the samples from Pakistan showed maximum infect...

Using ISTA techniques , 27 species of fungi were isolated from 6 varieties of sorghum seed. Deep freezing method was found superior to the standard blotter and agar plate methods for the detection ...

Viability of sclerotia of macrophomina phaseolina was examined in field under paddy cultivation for two consecutive years. After 12 weeks sampling, number of sclerotia were eliminated from surface ...

Conidia of penicillium expansum did not germinate in natural soil but remained viable (68%) for upto at least one year . in autoclaved soil, however, conidia germinated to develop and form conidia...

Leaf decoctions of 16 phanerogams were tested against leaf rust of wheat. Decoctions of acacia nilotica, calatropis procera, datura stramonium , dodonaea viscosa and rhazya stricta effectively contr...

Aqueous extract of betel leaf was tested for the induction of mitotic gene conversion, mitotic crossing over and reverse mutation in diploid strains of saccharomyces cerevisiae . tests performed with ...

Treatments of chlorella vulgaris with carbetamide (-1-(ethylcarbamyol) ethyl phenyl carbamate) induced changes in pigment content , 5 ppm showed considerable increase in pigment content , when 25 and...

A dense greem bloom of platymonas intermedia nasr was observed in coastal waters of Jeddah , Saudi Arabia in close vicinity to the point of discharge of city’s sewage with cell counts as hih as 38 ...

During taxonomical and ecological survey of phaeophyta from the coast of Karachi, 17 genera and 48 species including 10 genera and 29 species as new records were found in Ectocarpales , dictyotales ...

Unicellular , colonial and filamentous forms of algae represented by cephalia globate, coelastrum cambricum , dinogymnium acuminatum , pinnularia denticulate . sp. Nov., stichococcus bacillaris, myxo...