Issue No. 1

 

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  • ASSIGNMENT OF TAXONOMIC UNITS WITH PROBABILISTIC CHARACTERS TO GROUPS: A MONTE CARLO METHOD 
    S. SHAHID SHAUKAT; S. Z. HUSAIN (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    A Monte Carlo algorithm is proposed to assi on a new or unclassified operational taxonomic unit (O.T.U.), with variable characters, to the group it is closest to. The method involves a bootstrap resampling plan. The algorithm ...
  • THE POLLINATION BIOLOGY OF ARISTOLOCHIA BRACTEOLATA LAMK. (ARISTOLOCHIACEAE 
    MOMIN A.RAZZAK; TAHIR ALI; S.I ALI (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    Aristolochia bracteolata Lamk. is partially protoynous. The flower exibits fly-trapping mechanism. Only one pollinator, belonging to the genus Forciponzya (Diptera; Ceratopogonidae) is involved. The pollen germination takes ...
  • ESTABLISHMENT OF REGENERATING CALLI AND CELL SUSPENSION LINE OF BASMATI RICE (ORYZ4 SATIVA L. CV. B.370) 
    YUSUF ZAFAR; A. WAJID; KAUSER A. MALIK; OLUF L. GAMBORG (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    Methods were developea 101 cauus tnauction and efficient plant regeneration from mature embryos and immature inflorescences of basmati rice (Oyza sativa L. cv. Basmati-370). Callusing from seeds of rice was observed in MS ...
  • WATER RELATIONS AND DROUGHT TOLERANCE IN TWO WHEAT VARIETIES UNDER WATER STRESS 
    A.H. KHAN; M.Y. ASHRAF; R.M. ASLAM (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    A drought resistant variety of wheat (Pak-15800) was compared with a susceptible variety (Sarsabz) under water stress and the relationship between leaf water, osmotic, turgor potentials and relative water contents (RWC) ...
  • EVALUATION OF SELECTED GERMPLASM OF MUNGBEAN (VIGNA RADUTA( L) WILCZEK) 
    A. GHAFOOR; M. ZUBAIR; B.A. MALIK; S.M.IQBAL (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    One hundred and twelve mungbean genotypes selected from a broad based local as well as exotic germplasm during last three years, were evaluated for agronomic characters and incidence of yellow mosaic and leaf crinkle virus ...
  • IPOMOEA SINDICA STAPF, SCINDICUS STOCKS AND IPOMOEA ERIOCARPA R. BRO (CONVOLVULACEAE): A CLARIFICATION. 
    SURAYYA KHATOON; S.Z.HUSSAIN (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    Ipomoea sindica Stapf is reinstated as a species distinct from I. eriocarpa R. Bro on the basis of chemotaxonomical and micromorphok)gical evidences. Further, it is made clear that I. sindica Stapf is not based on Convolvulus ...
  • GENERIC LIMITS IN GENTIANA (GENTIANACEAE) AND RELATED GENERA IN PAKISTAN AND ADJOINING AREAS ALONGWITH A NEW GENUS KURRAMIANA 
    SAOOD OMER; M.QAISER (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    The genus Gentiana L. (s.l.) IS a heteromorphic assemblage. A synthetic approach is adopted to (reat Gentiana L. (s.l.) from Pakistan and adjoining areas by utilizing the data from palynology, seed morphology and chemistry. ...
  • MICROPROPAGATION IN DELONIX REGIA THROUGH IMMATURE EMBRYO DERIVED SHOOT TIPS 
    S.M. RAHMAN; M. HOSSAIN; A.K.M. RAFIUL ISLAM; O.I. JOARDER (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    A micropropagation method was developed from immature embryo-derived shoot tips of Delonix regia on Murashige and medium. Shoot multiplication occurred through proliferation of axillary leaf buds and the best multiplication ...
  • PROFILES OF SECONDARY METABOLITES IN FUSARIUM SOLANI 
    M.H. HASHMI; A. GHAFFAR (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    Cultures of Fusariunl solani extracted in toluene/ethyl acetate/90% fonnic acid (5/4/1, v/v) showed consistent profiles of secondary metabolites on thin layer chrolnatographic plates. These profiles, alongwith niacrolnorphological ...
  • SALINITY TOLERANCE IN TOMATO 
    S.M.E. SATTI; RAFIQ AHMAD (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    Growth and fruiting of five cultivars of tomato viz., Tropic, Pearson, Monte Carlo, ACE-SS and Strain B were studied at different salinity levels ranging between 34-272 mM NaCl. Reduction in growth at lower salinities (34 ...
  • TAXONOMICAL REVISION AND SOME BIOLOGICAL OBSERVATIONS ON SCYTOSIPHONALES (PHAEOPHYTA) OF KARACHI COAST 
    MUBINA BEGUM; NAUSHABA KHATOON (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    Taxonomy, morpho-anatomy and some biological notes of 4 genera with 6 species viz., Colpomenia sinuosa (Mertens ex Roth) Derbes & Solier; lgengaria stellata (Böerg.) Boergesen; Rosenvingia fastigiata (Zanardini) Boergesen, ...
  • PNEUMATOPHORE DENSITY AND SIZE IN MANGROVES OF KARACHI, PAKISTAN 
    S.M Saifullah; E.Elahi (Karachi: Pakistan Botanical Society, University of Karachi, 1992-06-20)
    Pneumatophore density of mangrove Avicennia Inarina from different locations of Karachi ranged from 56-520 nf with a mean value of 278m -2 ± 135 SD, their height ranged from 2-32 cm with a mean value of 11.8±3.2 SD and ...