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Year 1970 , Volume 2, Issue 1
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S.No. |
Title |
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1 |
RESPONSE
OF TRIFOLIUM SUBTERRANEUM TO SODIUM CHLORIDE UNDER DIFFERENT NUTRIENT CONDITIONSS.Z. HYDER
RESPONSE
OF TRIFOLIUM SUBTERRANEUM TO SODIUM CHLORIDE UNDER DIFFERENT NUTRIENT CONDITIONS ABSTRACT: Salt tolerance and interaction of NaCl with nutrient ions of the growth medium was studied in Trifolium subterraneum (cv. Wenigup). Growth of this species was
reduced at 50 m-equiv/1 NaCl indicating
that it is a salt sensitive species. Such growth reduction was due to higher sodium and chloride uptake and lower potassium content of the plant tissues. Adverse effects of NaCl on growth of this species were more pronounced when the plants were grown in low than in high nutrient solution. In studying the interaction of NaCl at four different nutrient concentrations, the results
showed an improvement in growth linearly as the strength of nutrient concentration increased. It is concluded that NaCl at low nutrient reduces growth by ion unbalance which is mainly due to low calcium status of the nutrient medium.
| 1-8 |
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2 |
MYCORRHIZAL ASSOCIATIONS IN
GYMNOSPERMS OF WEST PAKISTANA. G. KHAN
MYCORRHIZAL ASSOCIATIONS IN
GYMNOSPERMS OF WEST PAKISTAN ABSTRACT: Mycorrhizal associations in gymnosperms collected from West Pakistan have been investigated. All the
gymnosperms examined are mycorrhizal.
fEctotrophic association is found only in the members of the family Pinaceae, whereas rest of the Coniferales, members of orders Ginkgoales, Taxales and Ephedrales, are found to have
endotrophic mycorrhizal associations. Endogone spores are present in the rhizospheres of endotrophic mycorrhizae. Detailed investigations regarding the types of spores and their
| 9-18 |
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3 |
EFFECT OF GAMMA-
IRRADIATION ON THE SEEDS
OF CORCHORUS CAPSULARIS L. AND C. OLJTORIUS L.M.S. RAHMAN AND M.M. MIA
EFFECT OF GAMMA-
IRRADIATION ON THE SEEDS
OF CORCHORUS CAPSULARIS L. AND C. OLJTORIUS L. ABSTRACT: Dry seeds of the variety D-154
of Corchorus capsularis and C.G. of C. olitorius were treated with different dosages of gamma-rays. Observations on germination, seedling height, survival of plants and pollen sterility of first
generation plants indicated that the C. olitorius was more sensitive to gamma- rays than C. capsularis. The frequency of various types of mutations increased with the increase in dosages of radiation in both the species. Around 80 Kr of
gamma-rays for C. olitorius and around 90
Kr for C. capsularis were found to be the optimum workable dose for mutation study in them.
| 19-24 |
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4 |
PALYNOLOGICAL INVESTIGATIONS OF SOME MEMBERS OF FAMILY LEGUMINOSAE FROM JAMSHORO (SIND), WEST
PAKISTAN - IK.M. KHAN AND H.R.A. MEMON
PALYNOLOGICAL INVESTIGATIONS OF SOME MEMBERS OF FAMILY LEGUMINOSAE FROM JAMSHORO (SIND), WEST
PAKISTAN - I ABSTRACT: The palynological study of 28 plants belonging to three subfamilies of Leguminosae from Sind University Campus, Jamshoro, West Pakistan was undertaken. Colpate, colp- orate and porate type of pollen grains were found. Colpate and colp-orate type of pollen grains were three aperturate; the colp-orate type being more frequent. Porate type pollen grains were found only in polyads.
| 25-35 |
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5 |
BIOCHEMICAL
STUDIES ON DEVELOPING ANDM.A.A. KHAN AND M. ANWARUL HAQUE
BIOCHEMICAL
STUDIES ON DEVELOPING AND ABSTRACT: The contents of auxin, N and phosphates were determined at various stages of development of Sagar Kala variety of
| 37-43 |
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6 |
ELUCIDATION OF
INTERSPECIFIC RELATIONSHIPS THROUGH CHROMATOGRAPHIC STUDIESR. MUGHAL, A.S. ISLAM AND
S.W. SHAH
ELUCIDATION OF
INTERSPECIFIC RELATIONSHIPS THROUGH CHROMATOGRAPHIC STUDIES ABSTRACT: Paper and thin layer chromatographic studies of the three species
of Corchorus, namely,
(a) C. hirtus L. of Argentina, (b) C. olitorius L. var. C.G. and (c) C.
trilocularis L. show that (a) and (c) share more common spots than (b) shares with (a) or (c). Although hirtus belongs to a continent different from Pakistani species of olitorius and trilocularis, morphologicall y it is similar
to trilocularis. Chromatographic studies lead one to the same conclusion that trilo- cularis is more closely related
to hirtus compared to olitorius.
| 45-51 |
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7 |
REPORT OF AN
IMPERFECT RUST OF WHEAT FROM EASTM. JALALUDDIN
REPORT OF AN
IMPERFECT RUST OF WHEAT FROM EAST ABSTRACT: The author collected wheat stems
having elongated rusty pustules from the experimental farm of Agricultural
| 53-54 |
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8 |
DETERMINATION OF
INTERNAL WATER BALANCE
IN EUCALYPTUS UNDE R FIELD CONDITIONSM. B. ZAMAN, ABDUL HAMID
KHAN AND ABDUL KHALIQUE
DETERMINATION OF
INTERNAL WATER BALANCE
IN EUCALYPTUS UNDE R FIELD CONDITIONS ABSTRACT: Method for the determination of internal water balance for Eucalyptus under field conditions was standardised. For relative turgidity determination cutting leaf-discs and floating on water in a covered Petri
dish for 6 hrs seems to be best for
measuring the degree of water balance in Eucalyptus.
| 55-62 |
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9 |
NEW REPORT
OF PUCCINI A LEVIS ON DIGIT ARIA SANGUINALISM. JALALUDDIN
NEW REPORT
OF PUCCINI A LEVIS ON DIGIT ARIA SANGUINALIS ABSTRACT: Some of the leaves of Digitaria sanguinalis (Linn.) Scop, were found suffering from leaf spot disease in the lawns of Ramna, Dacca, East Pakistan in
December, 1969. The spots were distinct,
black in colour and circular in outline. About 5-7 spots appeared on the dorsal surface of the infected leaves. On the average the spots measured about o. 1 cm in diameter.
| 63-64 |
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10 |
INVESTIGATION ON THE
MEIOSIS OF DIPLOID (M. ALBA L.)YU. M. AGAEV
AND H.E. FEDOROV A
INVESTIGATION ON THE
MEIOSIS OF DIPLOID (M. ALBA L.) ABSTRACT: In an attempt to trace out the origin of
22-ploid M. nigra, investigations on cytological behaviour of diploid M.
| 65-76 |
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11 |
RE-EXAMINATION OF
CHROMOSOME
NUMBER IN SENRA INCANA CAV.CH. REHMATULLAH
RE-EXAMINATION OF
CHROMOSOME
NUMBER IN SENRA INCANA CAV. ABSTRACT: e-examination of PMCs of Senra incatta showed 2n - 34 and not 36 as reported earlier. Its meiosis is characterised by the precocious
movements of an average no. of two
bivalents at A I.
| 77-79 |
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