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Year 1988 , Volume 20, Issue 1
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abstract of the paper
S.No. |
Title |
Authors |
Pages |
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1 |
New
combinatiins and taxa in the genus gentianodes ( gentianaceae) from pakistanSaood 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 |
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2 |
The funvtional
significance of pollen aggregates in angiospermsS.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 |
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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 |
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4 |
Fresh water blue
green algae from satpuda ranges in uttar Maharashtra, indiaNeelima
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 |
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5 |
Relationships between plant communities and soil conditions in nasirabad and sibi districts , baluchistan, pakistanS.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 |
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6 |
Effect of azolla
and nitrogenous fertilizer on yield performance ofG.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 |
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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 |
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8 |
Effects of Nalco
salinity on shoot growth , stomatal size and itsSafdar 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 |
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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 |
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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 |
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11 |
Genetic studies
on the mildewH. 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 |
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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 |
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13 |
Ecology of an
upland forest near nowshera , NWFP, PakistanS.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 |
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14 |
Multivariate
analyses of forests dominated by agathis australis salisb., in newzealandMoinuddin
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 |
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15 |
Problems
encountered in age estimation of forest treeMoinuddin
ahmed
Problems
encountered in age estimation of forest tree ABSTRACT:
| 143-145 |
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16 |
Nitrogen
efficiency of egyption clover ( trifolium alexandrianum L.)Azra shaheen
Nitrogen
efficiency of egyption clover ( trifolium alexandrianum L.) ABSTRACT:
| 147-149 |
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17 |
Additions to the
hosts of macrophomina phaseolinaSaleem
shahzad , A. sattar and A. ghaffar
Additions to the
hosts of macrophomina phaseolina ABSTRACT:
| 151-152 |
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