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Year 1988 , Volume  20, Issue 1
Move your mouse curser on the title to view the abstract of the paper
S.No. Title Authors Pages Download
1
New combinatiins and taxa in the genus gentianodes ( gentianaceae) from pakistan
Saood omer , S.I. ali and M. qaiser

New combinatiins and taxa in the genus gentianodes ( gentianaceae) from pakistan
ABSTRACT:
The genus gentianodes love et love is recognized in Pakistan . two new species i.e. G. alii omer and qaiser and G. nasirii omer , Ali and qaiser and a new variety G. marginata (griseb). Omer, ali and qaiser var. harrissii omer , ali and qaiser are described. In addition , 15 new combinations and 2 new states are also proposed.

1-19 Download
2
The funvtional significance of pollen aggregates in angiosperms
S.I. ALI

The funvtional significance of pollen aggregates in angiosperms
ABSTRACT:
Functional significance of pollen aggregates in angiosperms is discussed with reference to the number of ovules per ovary, number of seeds per fruit, polyad stigma relationship and correlation with the pollen type. Information regarding the pollination and breeding systems is also presented . it is shown that pollen aggregates have repeatedly evolved in angiosperms.

21-44 Download
3
Occurrence of the genus bangia lyngbye (bangiales- rhodophyta) from chitral , north west of pakistan.
Mohammed nizamuddin

Occurrence of the genus bangia lyngbye (bangiales- rhodophyta) from chitral , north west of pakistan.
ABSTRACT:
A fresh wter red alga, bangia atro- purpurea (Roth) C. agardh has been reported for the first time from Pakistan which was found growing in soft water channels, arising from hot waterfalls in chitral dstrict, north of Pakistan.

45-48 Download
4
Fresh water blue green algae from satpuda ranges in uttar Maharashtra, india
Neelima mahajan and A.D. mahajan

Fresh water blue green algae from satpuda ranges in uttar Maharashtra, india
ABSTRACT:
During a survey of algal flora of satpuda ranges in utar Maharashtra , a total of 80 algal taxa, including 60 Cyanophyceae, 15 chlorophyceae and 5 bacillariophyceae were collected from three different localities viz, haripura, pal and langada

49-53 Download
5
Relationships between plant communities and soil conditions in nasirabad and sibi districts , baluchistan, pakistan
S.A. KAYANI , A.K. ACHAKZAI , T. AHMED AND S.A. QADIR

Relationships between plant communities and soil conditions in nasirabad and sibi districts , baluchistan, pakistan
ABSTRACT:
Twenty stand s f of vegetation were sampled in nasirabad and sibi districts . importance value of each species of three i.e. trees , shubs and herbs/grass layers was calculated. On the basis of similarity indices 9 plant communities associated with fine to coarse textured and moderate to strongly calcarious soils were recognized. These soils were generally very low in CO3 and HCO3. Salt free to strongly saline and sodium free to strongly sodic. Importance values of dominant plants and soil characteristics indicated that suaeda fruticosa , tamarix indica, cynodon dactylon and desmostachya bipinnata were positively correlated with ESP, Cl- and Ca+ Mg++ contents. C. dactylon was positively correlated with sand , D. bipinnata with electrical conductivity and panicum repens with amount of silt and negatively correlated with electrical conductivity.

55-62 Download
6
Effect of azolla and nitrogenous fertilizer on yield performance of
G.bari, ahmadunisa masood , G. Mustafa ,

Effect of azolla and nitrogenous fertilizer on yield performance of
ABSTRACT:
The effect azolla pinnata on rice yield was compared with the effect of nitrogenous fertilizer in the form of urea. Two commercial varieties of rice viz. IR6 and

63-68 Download
7
Effect of humic acid on root nodulation and nitrogenase activity of sesbania sesban )L.) merril.
Asghari bano , kauser A. malik and m. ashraf

Effect of humic acid on root nodulation and nitrogenase activity of sesbania sesban )L.) merril.
ABSTRACT:
Effect of different concentration of sodium humate applied to the root system of hydroponically grown seedling of sesbania sesban were studied on the seedling growth, root nodulation and nitrogenase actibvity. HA treatment at cotyledonary leaf stage at the time of inoculation increased the production of secondary laterals. Dry weight of root and shoot increased at 0.075 to 0.225 % HA. Rootnodules appeared 5-7d earlier and the number of nodules per plant and their fresh weight was significantly higher in HA treated seedlings . activity of nitrogenase increased following HA treatments . HA appeared to affect both the infection process as well as the formation and function of nodules in S.sesban.

69-73 Download
8
Effects of Nalco salinity on shoot growth , stomatal size and its
Safdar ali kayani and mujeeb-ur- rahman

Effects of Nalco salinity on shoot growth , stomatal size and its
ABSTRACT:
The effect of Nalco induced salinity on shoot growth , stomatal size and its distribution In zea mays c.v. sunahry were studied in nutrient solution. Shoot growth

75-81 Download
9
Abscisic acid stimulated intercellular fluxes of potassium in excised roots of maize,
A.N. CHANNA AND J.C. COLLINS

Abscisic acid stimulated intercellular fluxes of potassium in excised roots of maize,
ABSTRACT:
Compartmental analysis were carried out to determine the influence of ABA on the intercellular fluxes of K in excised roots of zea mays L. the rate of influx was sensitive to ambient temperature and the tissus take about 24 hours to reach an eqyulibrium . ABA stimulated K influx rate at 15-250C, but did not alter the pattern of influx . the cytoplasmic content ‘Qc’ and the efflux at both the plasmalemma and tonoplast membrance were also increased by ABA , the net tracer uptake, however was little affected by ABA . In excised maize root , K was actively transported inwards. It is concluded that extermal ly applied ABA promotes intercellular fluxes of K and that interacts with energy-linked K pump. A model based on these results id described.

83-95 Download
10
Locus identity test for 11 curled mutant lines in pisum sativum L.
CH.R. ARAIN

Locus identity test for 11 curled mutant lines in pisum sativum L.
ABSTRACT:
Identity/ allelism tests for 11 curled mutant lines of pea revealed that line 5142 and 5954 are mutations In the locus curl representative line 5855, while rest lines for the time being have been considered to be the mutations in the locus curl < a representative line 5846.

97-103 Download
11
Genetic studies on the mildew
H. sethar and A.S. larik

Genetic studies on the mildew
ABSTRACT:
A six-rowed winter type nepali barley genotype B5A/l possesses one resistance

105-107 Download
12
Comparison of methods of inoculating xanthomonas campestris PV. Translucens in wheat cultivars.
M.A. AKHTAR AND M. ASLAM

Comparison of methods of inoculating xanthomonas campestris PV. Translucens in wheat cultivars.
ABSTRACT:
Bacterial suspension containing 2 x 107 colony forming units of xanthomonas campestris pv. Translucens per ml, was used for inoculating 19 long duration , 5 medium duration and 3 short duration commercial cultivars of wheat under green house conditions . hypodermic inoculation method was better as compared to han rubbing, brush or spray methods in the development of disease symptoms.

109-112 Download
13
Ecology of an upland forest near nowshera , NWFP, Pakistan
S.M. CHAGHTAI , H.R. KHATTAK , S.Z. SHAH AND J. SHAH

Ecology of an upland forest near nowshera , NWFP, Pakistan
ABSTRACT:
The lower valley slopes were dominated by arboreal vegetation , the middle by tall shrub and the top exposed slopes by grasses . the vegetation comprises of olea ferruginea , monotheca buxifolia , acacia modesta , dodonaea viscosa and cymbopogon jwarancuso, the first time 3 species constituting the tree layer and the last 2 the field layer. O. ferruginea and M.buxifolia occupied the deep soil, . a modesta in habted the hot eroded sites, D. viscosa was rather uniformly distributed except the top slopes but was more adapted to exposed and warm habitats

113-124 Download
14
Multivariate analyses of forests dominated by agathis australis salisb., in newzealand
Moinuddin ahmed

Multivariate analyses of forests dominated by agathis australis salisb., in newzealand
ABSTRACT:
Multivariate analyses of 25 mature agathis australis (kauri) stands extending from te paki to katikati are presented . four groups of kauri-nothofagus truncate, kauri- beilschmiedia tarairi, dyoxylum spectabile , kauri-ixerba brexioides , ackama rosaefolia and kauri-oleria rani, phyllocladus trichomanoides may be recognized. In most stands however, the overlapping species distribution indicated the relative homogenous nature of the various kauri forests . imilarities between canopy and understory classification/ordination imply that canopy and understory species are correlatd in their occurrence. Stand groupings obtained by multivariate analyses showed distinct relationships to soils group . higher values (basal are and density) of kauri were recorded on soils derived from predominantly igneous rocks. The relationship between multivariate results and overall community and topographically attributes were assessed . density values and slope showed a significant correlation with ordination axes.

125-142 Download
15
Problems encountered in age estimation of forest tree
Moinuddin ahmed

Problems encountered in age estimation of forest tree
ABSTRACT:

143-145 Download
16
Nitrogen efficiency of egyption clover ( trifolium alexandrianum L.)
Azra shaheen

Nitrogen efficiency of egyption clover ( trifolium alexandrianum L.)
ABSTRACT:

147-149 Download
17
Additions to the hosts of macrophomina phaseolina
Saleem shahzad , A. sattar and A. ghaffar

Additions to the hosts of macrophomina phaseolina
ABSTRACT:

151-152 Download
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