Pollen morphology of 22 species of the genus convolvulus L. from S.W. asia and Arabian peninsula was carried out . pollen grains are mostly trizonocolpate , occasionally tetra or hexazonocolpate, pr...

With in nepeta sibthorpii-complex of the section pynonepeta bentham , two newly describes endemic species from yugosalvia viz., N. rtanjensis diklic and milojevic and N. ernesti-mayeri diklic and n...

Seed morphology of 78 species , belonging to 62 genera , distributed in 28 families have been studied . these investigations involve the study of shape , colour, surface and position of hilum and len...

Thirty one meiotic counts are reported for 13 species of papilionaceae from Pakistan. Counts for 2 species viz., rhynchosia capitata)heyme ex roth)DC., and vigna trilobata (L) verde , are new to flor...

Heherosis , heritability estimates , genetic advance and dominance estimates were calculated in 7 crosses of mungbean (vigna radiate(l.) WILCZEK) involving 7 parents of which 5 were local and 2 exoti...

The broad sense heritability , expected genetic advance and dominance estimates for days to 50 % flowering , plant, primary branches , pods per palnt, seeds per plant, 100 seed weight and grain yield...

The heterosis in horticulture traits was studied in four varieties viz., long white , red long, red round and sparkler of raphanus sativus L. generally all F1 hybrids exhibited heterosis over mind par...

Potassium naphthenate affected germination of zea mays seeds more adversely than seeding growth . coleoptile length was independent of IAA absorption but directly related to its translocation....

The effect of foliar sprays of naphthaleneacetic acid (-NAA) . 5.10. 15. 20 and 25 ppm at the time of 50% flowering on T-10, summer giant and Roma VF tomato varieties was investigated . the yields in...

The effect of withania somnifera , A indicum , A leptopus and P. glandulosa residues on germination and seedling growth of wheat cultivars was examined . there was no inhibitory effect of plant resi...

Effect of ibdole-3-acetic acid and kinetin were studied on the germination seedling growth and some biochemical constituents of chick-pea seeds irradiated with 0.2 and 0.7 kgy gamma rays . exposure ...

Growth and mineral distribution of a local strain of sugar (cyamopsis tetragonoloba (L.) taub.) were investigated in relation to salinity. Growth in terms of height and dry matter of different pla...

Seed-borne mycoflora of capsicum from 30 countries was examined . seed samples from Pakistan, turkey, india, Nigeria and Ghana showed maximum infection of fungi viz., alternaria alternate , colletotr...

Using ISTA techniques , 198 seed samples of rice collected from various localities of Pakistan were tested. Important pathogens isolated were drechslera oryzae , fusarium monoliforme , pyricularia or...

The didtribution of puccinia striiformis tritici virulences prevalent in nature in the stripe rust zones of the Punjab, north western frontier and Baluchistan during the period 1986-88 is described ...

The effect of various cropping pattern on the population and viability of sclerotia of sclerotium oryzae was examined. Reduction in population and viability of sclerotia was observed in soil cropped ...

The efficiency of double antibody sandwitch (DAS) form of ELISA and the differences in transmission behavior of two closely related persistant phloem restricted circulatively aphid transmitted viruses...

Potato virus X (PVX) was purified In substancial quantities and used for the production od antiserum with a homologous titre of 1:256 in double immunodiffusion test. Immunoglobulins (IgG) were separat...

Naturally growing blue-green lagal samples collected from multan were cultured in nitrogen free medium and of...

Four green sea weds , caulerpa faridii nizamuddin , C. racemosa (forsskal) J. agardh , C. scalpelliformis(R.brown) C. agardh and C. taxifolia (Vahl) C. agardh , collected from buleji near Karachi wer...

Dendrochronological methods wee applied to three abies pindrow stands in northern Pakistan, and dated chronologies with maximum period from 1750 to 1987 AD were obtained. Sample and chronology stati...