Yazar "Azeem, A." seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim Yok
    Öğe
    IMPACTS OF SALT STRESS ON THE PHYSIOLOGY OF PLANTS AND OPPORTUNITY TO REWATER THE STRESSED PLANTS WITH DILUTED WATER: A REVIEW
    (Corvinus Univ Budapest, 2019) Javed, Q.; Azeem, A.; Sun, J.; Ullah, I; Jabran, K.; Anandkumar, A.; Prabakaran, K.
    Water scarcity on a global scale declines the availability of fresh water for agricultural usage. This situation demands the urgent need of utilizing saline water as an alternative resource for irrigation. Stressful environments characterized by adverse natural conditions such as drought, salinity and heat impact the normal molecular, biochemical and physiological processes in crops. Plant stress responses to adverse environmental conditions are reviewed with emphasis on growth, physiological and electrophysiological mechanisms of plant tolerance. This review may also help in interdisciplinary studies to evaluate the photosynthetic threshold levels for rewatering of plant with diluted saline water. Furthermore, considering the goal of high plant production, the best rewatering time was found when plants undergo threshold levels. Therefore, this review provides a new method for dilution of saline irrigation based on plant physiology, which has a huge practical and theoretical importance for saline irrigation research.
  • Küçük Resim Yok
    Öğe
    THE ENHANCED TOLERANCE OF INVASIVE ALTERNANTHERA PHILOXEROIDES OVER NATIVE SPECIES UNDER SALT-STRESS IN CHINA
    (Corvinus Univ Budapest, 2019) Javed, Q.; Sun, J.; Azeem, A.; Ullah, I; Huang, P.; Kama, R.; Jabran, K.
    Effects of environmental stress (e.g. salt stress) on the plant invasions are still relatively unknown. Therefore, we analyzed the physiological characteristics of Alternanthera philoxeroides (Mart.) Griseb. as an invasive plant and Alternanthera sessilis (L.) R.Br. ex DC. as a native plant under single and mixed planting, in green house, Jiangsu University, China Plants were subjected to four different levels of salt stress treatments i.e., control, low (0.8%), medium (1.6%) and high (2.4%) that were made with equal proportion of NaCl and CaCl2 followed by rewatering. The results showed, that different levels of salt stress affect the plant growth of both species differently. The net photosynthetic rate (Pn) for A. philoxeroides was higher from low to high stress of both single and mixed planting that of A. sessilis. Afterwards, during rewatering, the increments in Pn from low to high salt stress were also found higher in A. philoxeroides. In addition, the reduction in photosynthetic activity in A. sessilis under mixed planting during salt stress markedly affected the plant growth. After rewatering the comparative increments in plant growth parameter were also noted higher in A. philoxeroides than A. sessilis. Our results thus suggest that A. philoxeroides may possess a better adaptability to salt stress, which results in a successful competitive dominance.
  • Küçük Resim Yok
    Öğe
    Water deficiency with nitrogen enrichment makes Wedelia trilobata to become weak competitor under competition
    (Springer, 2022) Azeem, A.; Sun, J.; Javed, Q.; Jabran, K.; Saifullah, M.; Huang, Y.; Du, D.
    Global environmental changes are believed to promote the invasion of many invasive plant species, especially under nitrogen enrichment conditions. However, it is unclear, how invasive plant species respond to nitrogen enrichment along with water deficit. In this study, competition of invasive plant (Wedelia trilobata, W-T) was studied with its congener native (Wedelia chinensis, W-C) under three levels of nitrogen (control, additional and double additional), two levels of water (normal and deficit) and three types of culture (single, mono and mixed). The result showed that under control treatment and additional nitrogen, the growth of W-T was 30% higher than W-C in all cultures but under additional nitrogen along with water deficit the growth of W-T was 20% lower than W-C within single plant and monoculture. Under competition, biomass, specific leaf area, root-to-shoot ratio, leaf chlorophyll content and leaf nitrogen of W-T were 20-40% decreased as compared to W-C under water deficit along with nitrogen addition treatments. These results indicated that competitive interaction between W-T and W-C was altered by additional nitrogen together with water deficit. It provides exceptional evidence that vigorous invasive species become weak competitor under additional nitrogen along with water deficit.