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Search Results: 1 - 10 of 8638 matches for " Muhammad Faheem Malik "
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Life Table Studies of Trichogrammatoidea bactrae, Hymenoptera: Trichogrammatidae, an Effective Biological Agent of Pink Bollworm (Pectinophora Gossypiella Lepidoptera: Gelechidae) of Cotton (Gossypium spp.)
Muhammad Faheem Malik
Pakistan Journal of Biological Sciences , 2000,
Abstract: Selected laboratory life table studies of Trichgrammatoidea bactrea were made at New Maxico State University USA. Life history studies were run at 13, 18, 23 and 28 °C at a constant 55% relative humidity (RH) and a 11/13 (light/dark) photoperiod. Speed of development from egg to adult stage ranged from 50.31 to 8.72 days at temperature from 13 to 28 °C respectively. Immature mortality was highest (32.01%) at 28 °C and lowest (16.79%) 18 °C. More female than males were found at all temperatures. Female fecundity related directly to temperatures. There were 24 eggs per female at 28 °C and 12 eggs per female at 13 °C. Females lived longer than males at all temperatures. Net productive rate was maximum at 23 °C (10.629) and minimum at 13 °C (4.751). In trinsic rate of increase and finite rate were maximum at 28 °C (0.231 and 1.261 respectively) and minimum at 13 °C (0.029 and 1.030 respectively).
Field Release of Trichogrammatoidea bactrae, Hymenoptera: Trichogrammatidae an Effective Biological Agent of Pink Bollworm (Pectinophora gossypiella, Lepidoptera: Gelechiidae) of Cotton (Gossypium hirsutum L.)
Muhammad Faheem Malik
Journal of Biological Sciences , 2001,
Abstract: Trichogrammatoidea bactrae, Hymenoptera: Trichogrammatidae (about 72,000 adults) were released in long staple, Upland 1517-88 cotton (Gossypium hirsutum L.). Total parasitization in Pink Bollworm (Pectinophora gossypiella, Lepidoptera, Gelechiidae, PBW) eggs in two replications was 19.56 and 26.84% respectively.
Light and Low Temperature Effects on the Shelf Life of Different Development Stages of Trichogrammatoidea bactrae, Hymenoptera: Trichogrammatidae
Muhammad Faheem Malik
Journal of Biological Sciences , 2001,
Abstract: The experiment was conducted to determine the shelf life for 20, 40 & 60 days of different development stages of Trichogrammatoidea bactrae at three different temperatures (0,4,& 8 C) with two light/dark regimes (9/15 light/dark hours & complete darkness). It was observed that under the conditions of this test, the best shelf life (>57% adult emergence) was obtained when pupae were held at 8 C for any holding time tested. Among the environmental factors tested (temperature, holding time and photoperiod) temperature was the most important. T. bactrae might overwinter either in egg or pupal stage.
Biological Control of Pink Bollworm (Pectinophora gossypiella, Lepidoptera: Gelechiidae) by Trichogrammatoidea bactrae (Hymenoptera: Trichogrammatidae) in Cotton (Gossypium barbadense)
Muhammad Faheem Malik
Journal of Biological Sciences , 2001,
Abstract: More than 144,000 adult Trichogrammatoidea bactrae, (Hymenoptera: Trichogrammatidae) were released in short staple, Pima 5-6 cotton (Gossypium barbadense L.) in Sewer Farm (SF), New Mexico State, USA. Total parasitization in Pink bollworm (Pectinophora gossypiella S., Lepidoptera, Gelechiidae, PBW) eggs in two replications was 14.72% and 18.53% respectively.
Some Biological Attributes of Trichogrammatoidea bactrae, Hymenoptera: Trichogrammatidae, at High Temperatures in Pink Bollworm (Pectinophora gossypiella, Lepidoptera: Gelechiidae) Eggs
Muhammad Faheem Malik
Journal of Biological Sciences , 2001,
Abstract: The peed of development, (Egg to adult emergence) of Trichogrammatoidea bactrae ranged from 7.273 to 6.532 days between temperatures 30 to 40 C. Immature mortality was maximum (71.88%) at 40 C and minimum (39.77 %) at 30 C. More females than males were found at all tested temperatures. Fecundity was 31 per female at 30 C and 19 per female at 40 C. Females lived longer than males at all tested temperatures. The net reproductive rate (Ro), intrinsic rate of increase (rm) and finite rate of increase ( ) (16.98, 0.30 and 1.43 respectively ) were maximum at 30 C. From these results, 30 C is the best temperature for rearing T. bactrae in the laboratory with 45% RH and 14/10 photoperiod. At 30 C parasitoid can produced about 33 generations in a year. Upper threshold temperature for T. bactrae looks around 45 C.
Viability of Trichogrammatoidea bactrae Pupae at Different Temperatures
Muhammad Faheem Malik
Journal of Biological Sciences , 2001,
Abstract: The experiment was performed to determine the viability of the Trichogrammatoidea bactrae (Trichogrammatidae: Hymenoptera) pupae, after being held, at three different temperatures (10, 12 & 14 C) for 80, 100 and 120 days in complete darkness with 45% relative humidity. Temperature 10 C with 80 days holding time is the best combination for the storage of the pupae of the parasitoid. Under the said environmental conditions >53% adult emergence was obtained when the stored pupae were exposed to normal physical conditions (28 C, 55% relative humidity and 11/13 light/dark photoperiod).
Effect of Host Age and Photoperiod on the Parasitism by Trichogrammatoidea bactrae
Muhammad Faheem Malik
Journal of Biological Sciences , 2001,
Abstract: The experiment was conducted to determine the effect of host age and photoperiod on the parasitism of Trichogrammatoidea bactrae (Hymenoptera: Trichogrammatidae). Pink Bollworm (PBW, Pectinophora gossypiella (Lepidoptera: Gelechiidae) eggs were used as host. The host eggs of different ages (1, 2, 3, 4 and 5 days old) were exposed to two pairs of the parasitoid (T. bactrae) at two light/dark regimes (complete light & complete darkness) with constant 75% relative humidity and 28 C temperature. It was observed that under the conditions of this test, maximum parasitization, > 90% by T. bactrae, was obtained when 1 or 2 days old host (PBW) eggs were held in complete light
Monitoring and Control of Codling Moth (Cydia pomonella, Lepidoptera: Tortricidae) by Pheromone Traps in Quetta, Pakistan
Muhammad Faheem Malik,Liaquat Ali
Asian Journal of Plant Sciences , 2002,
Abstract: Codling moth (Cydia pomonella, Lepidoptera: Tortricidae) was monitored and controlled in the valley of Quetta, Balochistan, Pakistan, in an apple orchard by pheromone traps. The moth got climax at 19.50 and 18.85 during Ist and 29.30 and 27.90°C during 2nd generation, 1998, 99 respectively. A total average of 267 and 273 moths were captured during the entire seasons in the said years respectively. Comparing to the chemical control, the results are not attractive, but the study reveals that the technique could be used, for monitoring/forecasting, in addition to the control of the said pest in the field.
Inter and Intra Row Spacing Effect on Thrips (Thrips spp.) Population in Onion (Allium cepa)-I
Muhammad Faheem Malik,Muhammad Nawaz,Zahid Hafeez
Asian Journal of Plant Sciences , 2003,
Abstract: To evaluate the effect of row-to-row distance of onion plants on thrips population, an experiment was conducted in Quetta, Pakistan. Five line spacing (20, 25, 30, 35 and 40 cm) with constant 20 cm plant-to-plant distance were tested. An inverse relation was found between increased line spacing and thrips population. Maximum mean number of thrips (162.4 plant-1) was observed on the plants cultivated in 20 cm apart rows with minimum yield (20310 kg ha-1). Minimum mean number of thrips (96.20 and 98.55 plant-1) was recorded from T5 (40 cm RxR distance) and T4 (35 cm RxR distance) with 20380 and 21250 kg ha-1 yield, respectively. Optimum number of thrips (114.3 plant-1) was recorded on plant cultivated in 30 cm apart lines with maximum yield (28250 kg ha-1). 30 cm row-to-row distance with 20 cm plant-to-plant distance in onion is recommended as an Integrated Pest Management (IPM) tool to culturally control thrips in the crop.
Homeobox leucine zipper proteins and cotton improvement  [PDF]
Muzna Zahur, Muhammad Ahsan Asif, Nadia Zeeshan, Sajid Mehmood, Muhammad Faheem Malik, Abdul R. Asif
Advances in Bioscience and Biotechnology (ABB) , 2013, DOI: 10.4236/abb.2013.410A3003
Abstract:

Transcription factors play key roles in plant development and stress responses through their interaction with cis-elements and/or other transcription factors. Homeodomain associated leucine zipper proteins (HD-Zip) constitute a family of transcription factors that are characterized by the presence of a DNA-binding domain closely linked with leucine zipper motif functioning in dimer formation. This type of association is unique to plants and considered as an excellent candidate to activate developmental responses to altering environmental conditions. Cotton is the most important fiber plant with a lot of local and commercial uses in the world. HD-Zip proteins not only have key roles in different stages of vascular and inter-fascicular fiber differentiation of cotton but also are suggested to have an important role against abiotic stress that is one of the key factors limiting cotton productivity. Plants have developed various strategies to manage stress conditions through a combination of metabolic, physiological and morphological adaptations. These adaptive changes rely largely on alterations in gene expression. Therefore, transcriptional regulators play a crucial role in stress tolerance. Being a transcription factor HD-Zip might be a useful target for genetic engineering to generate multiple stress tolerance in susceptible plants. In the following chapter, we discussed how the HD-Zip proteins would play a useful role for cotton development both in fiber production and stress adaptation.

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