Papers by Tarannum Khudsar
Journal of Plant Biology, 2000
... Tarannum Khudsar 1, Mahmooduzzafar 1, Woong Young Soh 2, and Muhammad Iqbal 1. 1Department of... more ... Tarannum Khudsar 1, Mahmooduzzafar 1, Woong Young Soh 2, and Muhammad Iqbal 1. 1Department of Botany, Hamdard University, Hamdard Nagar, New Delhi ... Root dry mass (g) Pre-flowering 0.56 + 0.32 0.40 - 0.07 (28.57) Ns Flowering 1.09 • 0.25 0.51 • 0.19 (53.21)** Post ...
Journal of Plant Nutrition, 2008
Application of zinc (Zn) [50, 100, 200, 300, and 400 µg zinc sulfate (ZnSO 4)/g of soil] reduced ... more Application of zinc (Zn) [50, 100, 200, 300, and 400 µg zinc sulfate (ZnSO 4)/g of soil] reduced the foliage and the total growth of pigeon pea [Cajanus cajan (Linn.) Huth]. The root-shoot length ratio, varying little with age, was relatively low in the treated plants. Decrease in dry weights of stem and root was more pronounced in the late stages of plant development. The root-shoot dry weight ratio, maximum in the flowering stage, was lower in treated plants than in the control. Number of pods per plant declined, showing a positive correlation with Zn concentration. Net photosynthetic rate, declining with plant age, was significantly low in the treated plants. Density and size of stomata and trichomes, stomatal conductance, intercellular carbon dioxide concentration, quantity of green pigments, nitrate reductase activity, and the nitrate and protein contents in the leaves also declined significantly. Proportion of vascular tissues both in stems and roots increased with plant age with a concomitant reduction of pith and cortex. Under zinc stress, the relative proportion of tissues varied inconsistently. Dimensions of vessel elements and fibers in stems and roots, increasing with the plant age, were always smaller in the treated plants. The vulnerability factor and mesomorphic ratio of treated plants declined, suggesting induction of water stress due to zinc treatments. Accumulation of Zn 2+ in different plant parts was considerably high at each developmental stage of the treated plants, and showed a positive correlation with Zn in the soil.
Biologia plantarum, 2004
Responses of Artemisia annua to different concentrations of zinc [50, 100, 200, 300 and 400 µg g-... more Responses of Artemisia annua to different concentrations of zinc [50, 100, 200, 300 and 400 µg g-1 (soil dry mass)] were studied during plant ontogeny. Total leaf area, dry mass of leaves, length and dry mass of shoots and roots increased with the age of the plant but the magnitude of increase declined significantly under the influence of Zn treatment. Net photosynthetic rate, intercellular carbon dioxide concentration and stomatal conductance were highest at flowering stage in control and treated plants and decreased at post flowering stage. Contents of chlorophyll a, chlorophyll b, carotenoids, proteins and nitrate reductase activity in leaves increased from pre-flowering to maximum level at flowering stage and decreased thereafter in both control and treated plants. Presence of Zn in the soil drastically decreased/inhibited all the parameters, and the magnitude of decline increased with increasing Zn concentration.
Uploads
Papers by Tarannum Khudsar