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Articles by Abdul Jabbar
Total Records ( 12 ) for Abdul Jabbar
  Saeed Ahmad , Taj Muhammad , Abdul Karim , Abdul Jabbar and Ghayour Ahmad
  Four varieties of onion viz; Phulkara Dark Red, Desi and Rubina were evaluated to see the effect of pollinator and insecticides on seed setting. Reduced or limited visiting of pollinators caused substantial reduction in seed production of onion showing 50 to 61% seed setting with non significant difference among the varieties. However significant differences were observed among varieties for number of flowers per umbel, number of fertilized flowers per umbel, umbel weight and seed weight per umbel. This reduction in seed production could be due to pesticides application of side grown crops (sunflower, brassica and coriander etc.).
  Muhammad Irfaq , Tila Muhammad , Muhammad Amin and Abdul Jabbar
  Four wheat genotypes viz., CT-0231, CT-99187, Bakhtawar-92 and Saleem-2000 were planted at NIFA experimental field on four different planting dates in order to test their performance against heat stress. The influence of heat stress was studied on yield and some other agronomic characters viz., days to 50% emergence, days to 50% heading, days to 50% maturity, plant height (cm), Biological yield (kg ha-1) grain yield (g/plot), grain yield (kg ha-1), harvest index (%) and lodging percentage. A gradual decrease in all the parameters was observed as a result of the late planting dates except for number of days taken to 50% emergence which was increased for all the genotypes in correlation with late planting. However, increase in grain yield (g/plot), grain yield (kg ha-1) and harvest index was observed for all the four genotypes at planting date 2. Which was considered to be the optimum sowing date for the genotypes under consideration.
  Abdul Jabbar and N. AI-Shammari
  Fifty six Mycoplasma strains of avian, bovine, feline and human origins were screened for the presence of mycoplasmaviruses using filtrate method. Fouty nine strains were found to have viruses associated with them, in which filtrate of these strains were shown to shed viruses producing plaques either in lawns prepared from the host mycoplasma and the indicator strain (Acholeplasma laidlawii strain PG8) or only lawns prepared from indicator strains. Some of these viruses were isolated for the first time from strains belong to some species of mycoplasma, so that one of these species was chosen (Mycoplasma bovis) to study the morphological and chemical structure characteristics of the virus isolated from it, as well as the virus isolated from the indicaior strain using transmission electron microscope. It was found that the virus which was isolated from Mycoplasma bovis virus-I (MV-B 1) is rod DNA virus.
  M. Shafi Nazir , Abdul Jabbar , Tahir Raza Gardezi , Iftikhar Hussain Bhatti and Shah Nawaz
  The effect of bunch and flat plantation on the yield and fibre quality of a hirsutum cotton genotype NIAB-26 was determined. The treatments comprised 100 cm apart 100 x 100 cm pit plantation with a bunch of 5, 7 and 9 plants per pit, 60 x 60 cm hills with two plants per hill, 90 cm spaced double-row strips (30/90 cm) and 60 cm spaced single rows. The results revealed that although bunch plantation in 100 cm apart 10 x 100 cm pits improved the fruiting potential and boll size to a significant extent but did not compensate the yield loss due to lower plant population per unit area compared to flat plantation with a normal plant population The highest seed cotton yield of 3637 kg ha-1 was obtained from flat plantation in 90 cm spaced double-row strips (30/90 cm) against the lowest of 1675 kg ha-1 from pit plantation with a bunch of 5 plants per pit.
  Masood Akhtar , M. Mazhar Ayaz , C.S. Hayat , Abdul Jabbar , M. A. Hafeez , M. Ashfaque and I. Hussain
  The involvement of secretary immunoglobulin system in the protection of mucous surfaces by locally produced antibodies lead to the demonstration of IgA. IgA in the intestine of immune birds may limit coccidian replication. Enzyme linked immunospot (ELISPOT) assay was employed to detect the mucosal immune response (IgA antibody secreting splenic cells) in chicken vaccinated with egg adapted gametocytes antigen. Twenty to twenty-five % (200,000 to 250,000/106 cells) of chicken splenic cells stimulated with gametocytes antigen were detected as IgA secretors. Results of the ELISPOT revealed that spleen is one of the major source of cells producing IgA in chickens. Such a high number of IgA antibody secreting cells indicate protection in birds vaccinated with gametocytes antigen via oral route against coccidiosis. ELISPOT assay is found to be an advantageous alternative to conventional haemolytic plaque technique, being simpler and of equivalent or even greater sensitivity.
  Saeed Ahmad , Abdul Karim , Abdul Jabbar , Mahmood-ul-Hassan , Taj Muhammad and Muhammad Iqbal
  A wide range of average performance and genetic variability was estimated for F1 crosses of nine commercial varieties of cotton viz., CIM443, MNH147, FH-682, N. Krishma, SLS-1, CIM-446, CIM448, FVH-53 and MNH552 for bolls and seed cotton yield per plant, boll weight, staple length, ginning out turn (%) and virus infestation (%). The highest genotypic variability was recorded for virus infestation (94.61%) followed by bolls per plant (29.84%). The highest estimates of heritability associated with highest genetic advance for bolls per plant (97.8 and 60.78), virus infestation % (95.0 and 189.9) and boll weight (97.39 and 10.99) suggested selection for improvement of these traits due to presence of sufficient genotypic variability. However, low estimates of these parameters for staple length showed slow progress through selection.
  Saeed Ahmad , Taj Muhammad , Abdul Karim , Abdul Jabbar and Ghayour Ahmad
  Four varieties of Onion viz., Phulkara, Dark Red, Desi and Rubina were evaluated to see the effect of pollinator on seed setting. Reduced or limited visiting of pollinators caused substantial reduction in seed production of onion showing 50 to 61% seed setting with non significant differences among the varieties. However, significant differences were observed among varieties for number of flowers, fertilized flowers, seed weight per umbel and umbel weight. This reduction in seed production could be due to pesticides application or attraction of side grown crops (Sunflower, Brassica and Coriander etc.)
  Saghir Ahmad , Muhammad Zaffar Iqbal , Altaf Hussain , Muhammad Attique Sadiq and Abdul Jabbar
  Mode of gene action and heritability were estimated for ginning out-turn, staple length, fibre maturity, fibre fineness, fibre strength and yield of cotton. Six genotypes B-557, Culture 728-4, MNH156, B-1850 (ne), Culture-604-4 and MNH147 were crossed in all possible combinations in diallel fashion. The results from scaling tests for the adequacy of additive-dominance model indicated that ginning out-turn, fibre fineness and fibre strength were found full adequate, whereas staple length, fibre maturity and seed cotton yield were partially adequate for further genetic analysis. Ginning out-turn, fibre fineness, fibre strength and yield were controlled by additive genes, whereas over-dominance was prevalent in staple length and fibre maturity. High narrow sense heritability for ginning out-turn and fibre strength suggested that these parameters could effectively be improved through selection in the early segregating generations, whereas chances of improvement for fibre fineness and seed cotton yield would be moderate as heritability estimates for these parameters were medium (h2 NS = 0.608 and 0.702%, respectively but poor for staple length.
  Muhammad Iqbal , Muhammad Ali Chang , Abdul Jabbar , Muhammad Zafar Iqbal , Muhammad-ul-Hassan and Noor-ul-Islam
  Certain features of gross morphology of the cotton plant furnish clues to earliness of crop production. Node of first fruiting branch (NFB), number of monopodial branch per plant (NMB), days taken to first flower, days taken to open first boll were used a morphological measures of earliness in the studies reported here. The estimation of component of variation for these characters suggested that the additive component was significant in all the traits and were greater than dominant components of variation except for seed cotton yield per plant, where the dominant components were higher in magnitude than additive. The ratio of H2/4H1 indicated asymmetry of positive and negative genes in parents for seed cotton yield and percent first pick, whereas symmetrical distribution of positive and negative genes in the parents was observed for node of first fruiting branch, number of monopodial branches per plant, days taken to first flower and days taken to open first boll. All of these traits were significantly correlated but because of its higher heritability and lower variability, node of first fruiting branch is considered the most reliable and the most practical one of these. NFB and NMB were significantly correlated phenotypically with percent first pick (earliness). From the estimates of heritability value (broad and narrow) sense it was concluded that cross Reshmi x NIAB-78, NIAB-78 x MNH-93 and S-14 x NIAB-78 are valuable crosses for improvement of early maturing traits (node of first fruiting branch, days taken to first flower, days taken to open first boll and percent first pick) with seed cotton yield.
  Muhammad Saeed , Ata Ullah , Riaz Ahmad and Abdul Jabbar
  Bioeconomic efficiency of different rice-based intercropping systems under different patterns of strip plantation was determined at Faisalabad during the year 1997. Strip plantation of rice comprised 45-cm spaced 2-row strips, 75-cm spaced 4-row strips and 105-cm spaced 6-row strips while intercrops were maize, cowpea, sesbania and ricebean. All intercrops were utilized as green fodder crops. Although all intercrops caused substantial reduction in both plant biomass and paddy yield ha -1 of the associated rice yet additional fodder yield from each intercrop not only compensated the reduction in plant biomass and paddy yield of rice but also increased farm net income by 19.69 to 125.33 per cent. Thus both legume (cowpea, sesbania, ricebean) and non-legume (maize) fodder crops can be intercropped in the upland rice seeded on a well prepared seedbed in 75-cm spaced 4-row strips in order to increase farm income per unit area. Maize intercropping gives the maximum net income. Besides neither planting pattern nor intercropping affect the qualitative traits such as proportion of normal, fertile, sterile, abortive and opaque spikelets in a panicle of rice.
  Saeed Ahmed , Mohammad Ashraf , Abdul Jabbar , Khalid Hussain Janbaz , M. Shafiq Khan , Nisar-ur-Rahman and Munawar Hussain
  The present research demonstrates the biological activity of Dipterygium glaucum since extensive literature survey has shown no documented biological activity of this plant. Ethanol (80%) extract (A) of the plant was subfractioned by hexane (B), ethyl acetate (C) and butanol (D). These fractions (1 mg mL-1) of D. glaucum showed 45 to 100% phytotoxicity as determined by the inhibition of Lemna minor plant growth but showed no cytotoxicity by brine shrimp lethality assay. DPPH radical scavenging activity of fraction `A` was 87% whilst other fractions had antioxidant activity below 35%. When fraction `A` was tested for antispasmodic activity, spontaneous contractions were recorded at 0.1-3.0 mg mL-1 concentration in isolated rabbit jejunum preparations. It also inhibited K+ induced contractions to 60% at 1-3 mg mL-1 level, suggesting a calcium channel blockade activity. The n-hexane (B), ethyl acetate (C) and n-butanol (D) fractions exhibited no or little antibacterial, antifungal, antileishmanial and insecticidal activities as compared with their respective controls. This is the first report on the biological activity of D. glaucum.
  M. Shafi Nazir , Abdul Jabbar , Zubair Waheed , Abdul Ghaffar and M. Aslam
  The seeding rates were 100 and 150 kg ha–1 while the nitrogen levels comprised 100, 150 and 200 kg ha–1 with five split application treatments viz. full at sowing, full with first irrigation, half at sowing and half with first irrigation, two third at sowing+one third with first irrigation and one third at sowing+One third with first irrigation+one third with second irrigation along with a basic dose of 100 kg ha–1 each of P and K applied at sowing. The crop was planted on December 19. The highest grain yield of 3585 kg ha–1 was obtained from plots given nitrogen full at sowing at 150 kg ha–1 followed by 3334 kg ha–1 in plots given nitrogen in two splits i.e., two third at sowing and one third with first irrigation. However, higher seeding rate (150 kg ha–1 ) tended to increase grain yield ha–1 with a nitrogen rate of 150 kg ha–1. By contrast, grain protein contents were the highest (12.26%) in crop fertilized with 150 kg ha–1 full at sowing and seeded at 100 kg ha–1.
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