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Articles by Muhammad Tariq
Total Records ( 5 ) for Muhammad Tariq
  Gowher Ali , Fazal Hadi , Zahir Ali , Muhammad Tariq and Muhammad Ali Khan
  In the present study, regeneration conditions for two-cultivars-of-tobacco (Nicotiana tabacum L.) were optimized. At different concentrations the effects of 1-naphthalene acetic acid (auxin)-and-6-benzylaminopurine (cytokinin)-on-callus-induction-and-subsequent-plant regeneration in K-399 and SPTG-172 using Murashige and Skoog (MS) media were studied. The seeds were germinated on simple MS media, while MS media with auxine and cytokinin was used for callus induction and regeneration of shoots. In tobacco, callus was successfully induced from leaf explants using a high ratio of auxin: Cytokinin. The over all callus induction frequency in SPTG-172 was greater than K-399 indicating a difference in the genetic background of two cultivars. Both cultivars also showed best response to different hormonal concentrations. The resultant calli were stimulated to form shoots by increasing the cytokinin concentration and decreasing auxin content of culture media. There were clear differences between the two cultivars in their ability to produce regenerated plants. The maximum number of calli were regenerated in SPTG-172 whereas the mean number of shoots produced per callus at all concentrations was higher in K-399 indicating that’s shoot regeneration is markedly affected by the genotype. The roots developed well on hormones free MS media in both cultivars irrespectively of the varietal difference. The well-rooted plants were then transferred to green house for acclimatization-to-the in vitro environment.
  Khair Mohammad Kakar , Muhammad Tariq , M. Raza Tareen and Wasi Ullah
  The effect of boron and iron was studied on wheat subjected to moisture stress. All possible combinations of 0, 2, and 4kg ha-1 of B and 0, 10 and 20 kg ha-1 of Fe were studied in the experiment on Barani-70 variety of wheat which was subjected to early stress by delaying the first irrigation to 20 days after sowing instead of 10 to 15 days after sowing. Logistic function was fitted to shoot mass recorded at 15 days interval and useful biological constants were calculated. Logistic function fitted the data well. B @ 2kg ha-1 and Fe @ 10kg ha-1 and their combination increased AGR and the maximum biomass but their combination at the highest levels decreased the maximum biomass. RGR maximum which occur at initial stage of the crop growth was only increased by iron application @ 20kg ha-1 and by combination of B and Fe at their highest levels.
  Khair Mohammad Kakar , Muhammad Tariq , Fazal Hayat Taj and Khalid Nawab
  To study the effect of inoculation and phosphorus application on soybean nutrition, an experiment was conducted at two locations in the North West Frontier Province (NWFP) of Pakistan. Four levels of P viz., 0, 40, 60, and 80 kg ha-1 of P2O5, and two levels of inoculation, no inoculation and inoculation with Bradyrhizobium japonicum were studied. Data were recorded on biological yield, seed yield, and P concentration in biological yield, and P uptake efficiency (PUPE), P utilization efficiency (PUTE), P use efficiency (PUE), fertilizer P uptake efficiency (FPUPE), fertilizer P utilization efficiency (FPUTE), fertilizer P use efficiency (FPUE) were calculated. Phosphosrus application slightly increased PUPE but decreased PUTE and PUE. Increase in P application increased FPUPE, FPUTE and FPUE. Inoculation increased PUPE, PUE and FPUPE at both locations but increased PUTE, FPUTE and FPUE at NWFP-AU only. Due to increase in yield and improvement in nutritive quality of the soybean seed and shoot, inoculation and P application is necessary for higher protein and oil yields from soybean seeds as well as for higher forage protein yields from soybean planted for forage.
  Muhammad Umar , Waseem Akram , Baboo Ali , Muhammad Tariq and Nazar Ali Shah
  Thripidae with three genera including Scirtothrips, Megaleurothrips Taeniothrips with their species reported from Azad Jammu and Kashmir. The keys are provided for separation of genera. The collected specimens have been identified and described in detail with keys and characters for identification along with illustration.
  Tariq Hussain , Jehanzeb , Muhammad Tariq and Badar Naseem Siddiqui
  An experiment to study the effect of different irrigation levels on the yield of cotton (Gossypium hirsutum) under two sowing methods was conducted at the Agronomic Research Area, University of Agriculture Faisalabad. The treatments were consist of (A) two sowing methods viz. (I) flat sowing, (ii) ridge sowing and (B) six irrigation levels viz., irrigation during vegetative growth (1 irrigation; missing last 5 irrigations), irrigation during vegetative growth and flowering (3 irrigations; missing last 3 irrigations), irrigation up-to boll formation (4 irrigations; missing last 2 irrigations), irrigation from flowering till maturity (5 irrigations; missing first 1 irrigation), irrigation from boll formation till maturity (3 irrigations; missing first 3 irrigations), irrigation at all stages (Normal 6 irrigations). The experiment was laid out according to RCBD in split plot arrangement with three replications and net plot size was 2.25x6 m. Data on yield characteristics of the crop were collected using standard procedures and analyzed statistically by using Fisher`s analysis of variance technique. Least significance difference (LSD) test at 0.05 levels was applied to compare the differences among significant treatment means. I6 produced maximum (2406 kg ha-1) seed cotton yield, which was significantly higher than all treatments. In treatment I4 seed cotton yield (2217 kg ha-1) was significantly higher than I3 (2098 kg ha‑1) and I5 1362 kg ha-1. The minimum yield (887 kg ha-1) was recorded in I1.
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