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Year 1975 , Volume  7, Issue 1
Move your mouse curser on the title to view the abstract of the paper
S.No. Title Authors Pages Download
1
Nuclei acids ion haploid and diploid cells of protomyces inundatus
M. salih ahmad , A. myers and J. G. Manners

Nuclei acids ion haploid and diploid cells of protomyces inundatus
ABSTRACT:
In both haploid diploid strains of protomyces inundates dangeard, grown in liquid culture, DNA content per cell remained conatant irrespective of age of culture. The RNA content were very high in the early stages of growth but declined to fairly constant value at later stages of growth, and at all stages the RNA content of diploids were around 25 percent higher then haploids, the behaviour of protein closely resembling that of RNA. The DNA after X-press extraction had a molecular weight of around 1 x 106 ; in both haploids and diploids . the GC content of Dna from all strains were percent. A melting transition profile analysis of the DNA from various strains showed that proportion of the total DNA contained in the two satellite peaks in diploids was nearly half that found in haploids. It is suggested that some DNA stretches in diploids , on which RNA is transcribed are detected.

1-11 Download
2
Population study of the sclerotia of macrophomina phaseolina in cotton fields
Abdul hakeem sheikh and abdul ghaffar

Population study of the sclerotia of macrophomina phaseolina in cotton fields
ABSTRACT:
A technique was developed for the isplation and enumeration of macrophomina phaseolina from soil. After wet sieving through 120 mesh screen the soil residue retained on 300 mesh screen was suspended in 0.5 % calcium hypochlorite solution and distributed on PDA containing penicillin ,

13-17 Download
3
Observation regarding phylogenetic position of dichotomosiphonales ( bryopsidophyseae)
Mustafa shameel

Observation regarding phylogenetic position of dichotomosiphonales ( bryopsidophyseae)
ABSTRACT:
Akinetogenesis and gametogenesis were stidied in dichotomosiphon tuberoses from hub river (Pakistan) . filaments were found to contain abundabce amyloplasts , akinetes were septate and arranged in chains with male gametes completely lacking flagella. Arguments are give in favour of keeping this monospecific genus in its own order, dichotomosiphonales the affinities of this order have been discussed with other siphonus algae. A diagrammatic scheme has been suggested to show the phylogenetic positions of dichotomosiphonales and to indicate its interrelationships with the other orders of bryopsidophyseae.

19-31 Download
4
Effect of pollen size, pollen viability and
Ali Nawaz channa, noor

Effect of pollen size, pollen viability and
ABSTRACT:
Percentage seed setting due to different time intervals after anthesis , of pollen

33-40 Download
5
Effect of plant spacings on yield and certain other characters of sunflower vas. HO-I
ALTAF HUSSAIN CHAUDHRY AND JAN MOHAMMAD SHEIKH

Effect of plant spacings on yield and certain other characters of sunflower vas. HO-I
ABSTRACT:
A spacing trial with row spacings 12”, 24” and 30” and plant spacings of 6”, 9” and 12” conducted with sunflower variety HO-I for four years showed that closer spacings generally resulted in higher seed yield. Head diameter and seed yield per plant were the most

41-49 Download
6
Cycological and morphological studies on allotetraploids of (G.arbpreum x G. stocksii) and (G. stocksii x G. arboretum)
M.anwar malik and A. latif sheikh

Cycological and morphological studies on allotetraploids of (G.arbpreum x G. stocksii) and (G. stocksii x G. arboretum)
ABSTRACT:
Allo-tetraploids of (G.arbpreum x G. stocksii) (A) and (G. stocksii x G. arboretum) (B) were obtained by colchicine treatments. Cylogical studies of the allotetraploids revealed 2.2 I, 24.6 II and 0.21 III with 88.35 pollen stainability percentage in (a) and 6/7 I, 20.6 II , 1.1 III AND 0.2 IV with 83.7 pollen stainability percentage in (B). morphological studies were also undertaken and comparing to diploid hybrids the allotetraploids were luxuritant in growth , resistant to pest and drought with increased pollen stainability and fertility ( fruit setting), indicating complete sterility of the diploid hybrids which was overcome by colchicine treatments.

51-55 Download
7
Effects of simazine , atrazine and 2,4-D on 14C 2-fixation and composition of 14C- assimilates in pinus nigra var. calabrica
S. shahid shaukat

Effects of simazine , atrazine and 2,4-D on 14C 2-fixation and composition of 14C- assimilates in pinus nigra var. calabrica
ABSTRACT:
The effects of root application of simazine , atrazine and and 2,4-D on 14C2- fixation and on the composition of 14C- assimilates . by young pinus migra var. calarica seeding were investigated. Simazine and 2,4-D at 5 ppm substantly

57-65 Download
8
Stem anatomy and nodal anatomy of the genus knema
M.rehan siddiqi and Thomas K. Wilson

Stem anatomy and nodal anatomy of the genus knema
ABSTRACT:
The anatomy of the young stem and nodal was investigated in ten species of the genus knema. The young stem is coverec by trichomes . secretory cells, canals, acicular crystals and druses are found in the parenchymatous tissue. The stem has a periderm of superficial origin, cortical sclerieds, plates of sclerieds in the pith and a pseudo-siphonostetic primary vascular system capped on the outside by groups of separate extraxylary fibers . the phloem is made up of primitive sleve tube elements with a large number of unspecialized sleve areas and oblique end-walls. All species show a unilacular three-trace node.

67-76 Download
9
Studies on seed germination of podophyllum emodi wall
M.A.R. bhatti

Studies on seed germination of podophyllum emodi wall
ABSTRACT:
Seed of podophyllum emodi showed enhanced germination between 18 to 21 degree C after exposure to 900 lux light for 12 ti 24 hours . pre-soaking of seed in water up to 120 hours and 48 hours

77-80 Download
10
The effects of air pollution on stomatal, clogging, carbohygrate and chlorophyll contents in certain road side plants
ZAHOOR AHMAD AND S.A. QADIR

The effects of air pollution on stomatal, clogging, carbohygrate and chlorophyll contents in certain road side plants
ABSTRACT:

81-84 Download
11
Colonization of macrophomina phaseolina on cotton roots in relation to sclerotial population in soil
TARIQ HUSAIN AND ABDUL GHAFFAR

Colonization of macrophomina phaseolina on cotton roots in relation to sclerotial population in soil
ABSTRACT:

85-87 Download
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