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Year 1986 , Volume 18, Issue 1
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S.No. |
Title |
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1 |
NATURAL GROWTH
SUBSTANCES AND WOOD DIFFERENTIATION IN BLUE PINE (PINUS WALLICHIANA, A.B. JACKS.).T.M. Khattak and A.
Mahmood
NATURAL GROWTH
SUBSTANCES AND WOOD DIFFERENTIATION IN BLUE PINE (PINUS WALLICHIANA, A.B. JACKS.). ABSTRACT: Twenty-five trees selected in a large Blue pine stand in Burban Forest in Murree Forest
Division were studied for xylem cell formation
and seasonal variation in the amount of natural growth subs¬tances. Auxin extracted
during different periods of the season
showed significant correlation with the radial diameter of tracheid, but no significant correlation was found between the rate and duration of the radial enlargement of differentiating tracheid and the auxin level. There was no significant correla¬tion in seasonal changes in natural auxin and cell wall thickness of tracheid. Significant correlation was found between cell wall thickness of tracheid and the duration of phase of maturation. Water soluble inhibitors showed significant correlation with the duration of phase of maturation.
| 1-7 |
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2 |
OCCURRENCE OF TRANSFER CELLS IN
THE SPOROPHYTE OF PTERIDIUM AQUIUNUM
L.KHALIDA KHATOON
OCCURRENCE OF TRANSFER CELLS IN
THE SPOROPHYTE OF PTERIDIUM AQUIUNUM
L. ABSTRACT: Cells with wall ingrowths called transfer cells were observed in foot cells of sporophyte of
Pteri- dium aquilinum L. Gametophytic cells contiguous with foot cells of sporophyte also
possessed wall in¬growths. Cell walls of foot cells of sporophyte immediately adjacent to the gametophyte, had wall ingrowths on both
sides. Wall ingrowths or projections, irrespective of their distribution were always
delimited by plasmalemma. The distribution of cell organelles in transfer cells and their
possible role in transport of nutrients is discussed.
| 9-13 |
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3 |
PLANTLET FORMATION IN ROOT CALLUS OFMEHMOOD AKRAM AND
PLANTLET FORMATION IN ROOT CALLUS OF ABSTRACT: Using Benzylaminopurine (2 mg/1) and NAA (0.8 mg/1) root callus of Rauwolfia
| 15-19 |
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4 |
STUDIES ON IN VITRO CULTURE OF ARACHIS HYPOGAEA
HYPOCOTYL EXPLANTSIHSAN ILAHI AND SHAUKAT AMEEN
STUDIES ON IN VITRO CULTURE OF ARACHIS HYPOGAEA
HYPOCOTYL EXPLANTS ABSTRACT: Arachis hypogaea hypocotyl explants exhibited callus formation when inoculated on Murashige & Skoog (MS) medium supplemented with both an auxin and
cytokinin. Although best callus resulted in 0.5 mg/1 of 2, 4-D and 1.0 mg/1 of K but it did
not support further callus proliferation. 2, 4-D
@1.0 mg/1 and K @ 4.0 mg/1 supported callus growth. Browning of callus tissues in
subcultures for long duration was overcome
by the addition of coconut milk (CM) and sodium diethyl dithio carbo¬nate (SDDC).
| 21-27 |
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5 |
EFFECTS OF NaCl- SALINITY ON GROWTH AND PEROXIDASE
ACTIVITY IN TRITICUM AESTIVUM L. VAR.
CHANAB 70KAMAL AKHTAR MALIK AND S. SHAHID SHAUKAT
EFFECTS OF NaCl- SALINITY ON GROWTH AND PEROXIDASE
ACTIVITY IN TRITICUM AESTIVUM L. VAR.
CHANAB 70 ABSTRACT: The effect of sodium chloride on the growth, phenolic, content and peroxidase activity of Tri ticum aestivum L. var. Chanab 70 was studied. High salt concentration retarded the root and shoot growth after 4 days of treatment, suppression of root growth was more than that of shoot presumably due to accumulation of ions. Decrease in peroxidase activity at -2 and -4 bar NaCl
was coupled with the increase in total phenol level in the root tissues. Electrophoretic
separation revealed that the peroxidases
were markedly inhibited by increasing salt concentration after 2 days of treatment. Appearance of two new iso-enzymes after 4 days of treatment with -4 bar NaCl suggest
| 29-35 |
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6 |
EFFECT OF SALINITY ON GROWTH AND MINERAL COMPOSITION
OF CUCUMBER, SNAKE MELON AND PEANUTS. M. ALAM, S, AHMED AND S.S. M. NAQVI
EFFECT OF SALINITY ON GROWTH AND MINERAL COMPOSITION
OF CUCUMBER, SNAKE MELON AND PEANUT ABSTRACT: Sand and gravel culture techniques were used to study the effect of irrigation with saline nutrient solution on dry matter yield and nutrient content of leaves and stems of cucumber, snake melon and peanut. Dry matter yield of cucumber and snake melon decreased at high salinity level. There was
no effect of salinity upto 4000 ppm on the dry weight of peanut. Maximum fruit yield of
snake melon was recorded at 2000 ppm
salinity level while reproductive growth of cucumber and peanut was severely affected. Salinity caused accumulation of Na in leaf and stem of test plants where K, Ca, Mg,Fe and Mn significantly decreased with increasing salinity levels in all plant parts.
| 37-43 |
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7 |
BIOCHEMICAL
RESPONSE OF POTATO TO VARIOUS LEVELS
OF SOIL MOISTURE
TENSIONR. AHMAD, P. AKHTAR AND D.
KHAN
BIOCHEMICAL
RESPONSE OF POTATO TO VARIOUS LEVELS
OF SOIL MOISTURE
TENSION ABSTRACT: Effects of soil moisture tension on yield and biochemical composition of potato tubers cv.
Cardinal were investigated. Under moisture
tension of 60 and 80% AWR, normal tuber initiation was affected and yield declined.
Individual weight of tubers, increased under
stressed conditions. Increase in water stress appeared to promote foliar concentration of chlorophyll-b associated with increase in specific gravity of the tubers. The reducing sugar content, however, behaved irregularly. There was decline in protein content, and rise in Total Glycoalkaloids (TGA) of the tubers. TGA under 80% AWR irrigation was found to cross the permissible limit deteriorating the quality of the tubers.
| 45-50 |
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8 |
EFFECT OFC. IKECHUKWU
EFFECT OF ABSTRACT: A growth chamber study was conducted to
| 51-58 |
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9 |
PHYTOTOXICITY OF
FUMARIA INDICA ON WHEATS.M. CHAGHTAI, ABDUS SADIQ
AND MOHAMMAD
IBRAR
PHYTOTOXICITY OF
FUMARIA INDICA ON WHEAT ABSTRACT: The allelopathic potential of Fumaria indica
(Hausskn.) Pugsley was tested in laboratory experi¬ments. The aqueous extracts from the plant parts significantly inhibited germination and growth of Triticum aestivum L. var. Blue Silvar. The toxicity varied from part to part and also depended upon the amount of the plant material used, the soaking period and the freshness of the material assayed. Dry leaves were found to be highly toxic.
| 59-64 |
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10 |
PHYTOSOCIOLOGY OF
THE SUBKHA OF ZUARAS. A. QADIR AND A. H. FAWARIS
PHYTOSOCIOLOGY OF
THE SUBKHA OF ZUARA ABSTRACT: Four plant communities were recognized in the
Sabkha of Zuara. Sodium was the predominant cation in all sites yet on comparative basis following correlations are apparent: Limoniastrum – Salicornia community , high SAR and ESP; Salicornia –Arthrocnemum Community, high sodium, nitrates and high water table; Arthrocnemum-Limoniastrum Community, high Calcium , SAR and ESP, Limoniastrum –
Salicornia-Zygophyllum Community, high potassium, total salinity and chlorinity. Arthrocnemum glaucum and Salicornia fruticosa were found to be reproducing well therefore they are likely to predominate the ‘’Sabkha’’ of Zyara in future.
| 65-74 |
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11 |
GENETIC CHARACTERISATION
OF GAMMA IRRADIATION INDUCED LEAF MUTATIONS IN
MUNG BEAN (VIGNA RADI A TA (L) WILCZEK)ILYAS A. MALIK, G. SARWAR AND
Y. ALI
GENETIC CHARACTERISATION
OF GAMMA IRRADIATION INDUCED LEAF MUTATIONS IN
MUNG BEAN (VIGNA RADI A TA (L) WILCZEK) ABSTRACT: Three new leaf mutants, serrated leaf, unifoliate and narrow leaf were induced in
mung bean, Vigna radiata (L) Wilczek, following seed treatments with different exposures of gamma irradiation. The
serrated leaf mutant was obtained in cultivar
Fak 32 at 60 KR whereas unifoliate and narrow leaf mutants were obtained in cultivar
6601 at 30 KR and 60 KR doses,
respectively, in the M2 generation. The serrated leaf mutant had relatively large thick
leaflets with conspicuous deep serration of
the margins as compared to the entire leaflets of the parent. The pollen fertility in the mutant lines ranged from 42-95%. The mutant behaved as monogenic recessive to normal. The gene symbols Sl/sl are proposed for this allelic pair. The unifoliate mutant was characterised by simple leaves instead of trifoliates whereas the narrow leaf
| 75-81 |
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12 |
THE COSTATA MUTANT
IN THE PEA CAUSED BY MUTATION IN THE LOCA lum-1, lum-2, lum-3, lum-
4, and lum-5.CH. R. ARAIN
THE COSTATA MUTANT
IN THE PEA CAUSED BY MUTATION IN THE LOCA lum-1, lum-2, lum-3, lum-
4, and lum-5. ABSTRACT: The costata mutant in the pea is characterized by green veins and yellowish
green interveinal areas. Eleven cases of
induced mutation have been reported and possibly one spontaneous. Eight of these
induced cases was found to be due to
mutation in the newly assigned gene lum-2, type- line assigned 5160, one to mutation in a previously investigated gene lum, here
reassigned lum-1. Three mutants were found to be due to mutation in three different loca,
different also from lum-1 and lum-2. These were assigned the symbols lum - 3, type-line
5443, lum - 4, type-line 5609, and lum-5,
type-line 5937. Two further mutants probably belong to two further different loca but gene symbolization is pending further investigations.
| 83-89 |
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13 |
DISTRIBUTION OF THE CYANOGENIC
PHENOTYPE OF LOTUS CORNICULATUS L. IN THE MURREE HILLS,
THE JHELUM AND THE SWAT VALLEYS OF
NORTHERN PAKISTANA.D. RAMNANI, G.S. MARKHAND,
N.M. BHATTI AND A.R. MALIK
DISTRIBUTION OF THE CYANOGENIC
PHENOTYPE OF LOTUS CORNICULATUS L. IN THE MURREE HILLS,
THE JHELUM AND THE SWAT VALLEYS OF
NORTHERN PAKISTAN ABSTRACT: Sixteen Lotus comiculatus populations growing at altitudes ranging from 1036 to
2209 m were sampled for leaf-cyanogenesis. The areas chosen for this purpose were the Murree Hills, the Jhelum and the Swat
valleys in the north of Pakistan. No evidence was obtained to suggest that there was any
association between the distribution of the cyanogenic phenotype and altitude and hence cold temperature. All the populations
sampled seemed to be monomorphic for the
| 91-96 |
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14 |
SPONTANEOUS
MUTAGENESIS IN WILD TYPE AND RADIATION DEFECTIVE MUTANTS OF CYANOBACTERIUM ANACYSTIS NIDULANSS.A. RASOOL, L.E. KARBISHEVA*
AND V.D.
ZHEVNER*
SPONTANEOUS
MUTAGENESIS IN WILD TYPE AND RADIATION DEFECTIVE MUTANTS OF CYANOBACTERIUM ANACYSTIS NIDULANS ABSTRACT: Comparative studies on the spontaneous mutation rate on eryr marker of wil& type
cyanobac¬terium Anacystis nidulans and its
UV sensitive (and UV resistant) mutants were carried out in order to determine the
effect of repair processes affecting
mutations. Some of the UVS and XRS mutations decreased the rate of spontaneous mutations while other similar mutations did
not affect the level of spontaneous mutagenesis compared with the increased
level of UV induced mutations. The process of spontaneous mutagenesis in cyanobacterium A. nidulans is controlled by
complicated genetical systems that are responsible for radiation sensitivity of the
cells. Moreover, the rate of spontaneous and induced mutagenesis was correlated in majority of the strains tested.
| 97-102 |
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15 |
SEED STRUCTURE IN RELATION TO THE
TAXONOMY OF THE ABUTILEAE (ABUTILON,
ANODA, MODIOLA, SIDA, SPHAERALCEA
AND UROCARPIDIUM)M.T. KHUSHK AND J.G.
VAUGHAN
SEED STRUCTURE IN RELATION TO THE
TAXONOMY OF THE ABUTILEAE (ABUTILON,
ANODA, MODIOLA, SIDA, SPHAERALCEA
AND UROCARPIDIUM) ABSTRACT: The general morphology and structure of the seeds of 17 species of the Abutileae
(Malvaceae) have been studied using light and scanning electron microscopy.
Relevance of seed structure to the tribal divisions of the family is discussed.
| 103-114 |
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16 |
CUSCUTA VIOLACEUS (CUSCUTACEAE), A
NEW SPECIES FROM PAKISTANM.T. M. RAJPUT AND SALEHA
TAHIR SYEDA
CUSCUTA VIOLACEUS (CUSCUTACEAE), A
NEW SPECIES FROM PAKISTAN ABSTRACT: Cuscuta violaceus a new species of the family Cuscutaceae is described from
Pakistan. During a review of the family
Cuscutaceae in Pakistan, we examined all the herba¬rium specimens of genus Cuscuta
present in Pakistani herbaria and the
collection of this genus from Pakistan present in overseas herbaria. Rajput &
| 115-117 |
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17 |
EPIUTHIC ALGAE FROM BALUCHISTANGHAZLA ANJUM, FARRUKH
HUSSAIN AND SAJAD-UR- RAHMAN
CHAGHTAI
EPIUTHIC ALGAE FROM BALUCHISTAN ABSTRACT: Fifty two species of algae belonging to
Cyanophyceae (18 spp.), Chlorophyceae (10 spp.), Bacillariophyceae (21 spp.) and
Euglenophyceae (3 spp.), found growing
upon stones or submerged stones in fresh water are reported from Baluchistan.
| 119-122 |
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18 |
TAXONOMIC STUDIES
ON SOME MEMBERS OF DICTYOTALES (PHAEOPHYTA) FROM THE COAST OF PAKISTANMOHAMMED NIZAMUDDIN*
AND SURAIYA
PERVEEN
TAXONOMIC STUDIES
ON SOME MEMBERS OF DICTYOTALES (PHAEOPHYTA) FROM THE COAST OF PAKISTAN ABSTRACT: Coast of Pakistan is represented by 8 genera of the order Dicyotales viz., Dictyota Lamx.,
Dic- tyopteris Lamx., Dilophus J.Ag.,
Lobophora J. Ag., Padina Adanson, Spatoglossum Kiitz., Stoe- chospermum Kiitz. and Stypopodium Kiitz. A key of the genera is given and the taxonomy and ana¬tomy of Lobophora, Spatoglossum, Stoechospermum and Stypopodium has been provided.
| 123-135 |
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19 |
BIOASSAY STUDIES OF PHYTOPLANKTON OF COASTAL WATERS OF
KARACHI IN RELATION TO HEAVY METAL
POLLUTION: I. EFFECT OF COPPER AND LEAD ON SKELETONEMA
COST ATI]MSHAUKAT HAY AT KHAN1 AND S.M. SAIFULLAH2
BIOASSAY STUDIES OF PHYTOPLANKTON OF COASTAL WATERS OF
KARACHI IN RELATION TO HEAVY METAL
POLLUTION: I. EFFECT OF COPPER AND LEAD ON SKELETONEMA
COST ATI]M ABSTRACT: Toxic effects of copper and lead on a local diatom species Skeletonema costatum were studied using bioassay technique. Copper inhibited growth at a concentration of 10 Mg Cu I 1 and killed the cells at and above 30
Mg Cu l"1. Lead inhibited growth, the lowest tolerance limit being 50 Mg Pb l"1. The effect of both metals increased with age of culture and a significant inverse rela¬tionship
existed between their concentrations and growth of the spccies. The combined effect
of copper and lead on the species was
synergistic.
| 137-145 |
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20 |
EVALUATION OFM. BASHIR* AND
EVALUATION OF ABSTRACT: Out of 9 fungicides tested In Vitro Tecto-60
| 147-151 |
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21 |
ECOLOGICAL STUDIES
OF FUNGI IN A TRICKLING FILTER TYPE SEWAGE PLANT OF KARACHIYASMEEN AKHTAR AND A.
GHAFFAR
ECOLOGICAL STUDIES
OF FUNGI IN A TRICKLING FILTER TYPE SEWAGE PLANT OF KARACHI ABSTRACT: The occurrence, distribution and relative abundance of fungi was examined in a
trickling filter type sewage treatment plant of
Karachi. At least 50 species of filamentous fungi belonging to 25 genera were isolated
from samples of waste water of Karachi
using the dilution plate technique. Species dominance and diversity indices were used to determine the structure and organization of fungal communities. In the system examined, the dominance was high and the general diversity was of a low magnitude. Furthermore, dominance was inversely
related with diversity and its two components
- richness and equitability. These components were positively correlated with
each other, however, equitability was relatively more important in governing the
overall diversity of fungal communities.
| 153-167 |
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22 |
OCCURRENCE AND
PERIODICITY OF SAPROLEGNIACEAE IN YATELY LAKEF.S. MEHDI*
OCCURRENCE AND
PERIODICITY OF SAPROLEGNIACEAE IN YATELY LAKE ABSTRACT: Sixteen species of fungi were isolated and identified in the water samples of Yately Lake
using hemp seeds as baits. Achlya
americam, A. racemosa, Dictyuchus monosporus, Fusarium solani, Py- thium
| 169-173 |
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23 |
SECONDARY CONIDIAL
PRODUCTION IN ARTICULOSPORA TETRACLADIA INGOLDMUZAFFER AHMED KHAN
SECONDARY CONIDIAL
PRODUCTION IN ARTICULOSPORA TETRACLADIA INGOLD ABSTRACT: No Abstract
| 175-177 |
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