ORCID Profile
0000-0002-9734-7056
Current Organisation
University of Agriculture Faisalabad
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Publisher: Springer Science and Business Media LLC
Date: 21-05-2014
Publisher: Informa UK Limited
Date: 03-2011
Publisher: Canadian Science Publishing
Date: 09-2008
DOI: 10.1139/X08-085
Abstract: This study compared the performance of Eucalyptus camaldulensis Dehnh. planted at four spacings (2.0 m × 2.0 m, 2.5 m × 2.5 m, 3.0 m × 3.0 m, and 3.5 m × 3.5 m) at three experimental saline sites in Punjab province of Pakistan over 5 years and assessed the impact of these planting densities on soil salinity amelioration. Tree response was assessed by measuring survival, height, and diameter at breast height (DBH) of trees at 1, 2, and 5 years as well as wood volume after 5 years. Wood volume per hectare, height, and DBH were greater at sites I and II than at site III. The 3.0 m × 3.0 m spacing resulted in taller trees, but DBH and wood volume were greater with the 3.5 m × 3.5 m spacing. The study confirmed that initial tree spacing or density has a significant impact on the subsequent height, DBH, and wood volume of E. camaldulensis plants. The study also showed that broad spacing could be a better option in saline environments. There was a definite reduction in soil salinity (electrical conductivity, EC e ) at five soil depths after 5 years of tree growth at all sites and spacing treatments, with reductions varying from 46% to 47% at site I, 31% to 52% at site II, and 25% to 58% at site III. Soil EC e was generally higher in surface (0–15 cm) soils.
Publisher: Informa UK Limited
Date: 25-09-2015
Publisher: The Scientific and Technological Research Council of Turkey (TUBITAK-ULAKBIM) - DIGITAL COMMONS JOURNALS
Date: 2015
DOI: 10.3906/TAR-1410-26
Publisher: Informa UK Limited
Date: 15-11-2016
Publisher: Springer Science and Business Media LLC
Date: 18-11-2015
Publisher: Springer Science and Business Media LLC
Date: 22-09-2018
Publisher: CSIRO Publishing
Date: 2014
DOI: 10.1071/FP13158
Abstract: Ion accumulation and growth under salt stress was studied in two experiments in a rice mapping population derived from parents CO39 and Moroberekan with 4-fold differences in shoot Na+ accumulation. The 120 recombinant inbred lines (RILs) had differences up to 100-fold in Na+. Measurement of ‘salt tolerance’ (biomass production of the RILs in 100 mM NaCl relative to controls) after 42 days showed a 2-fold variation in ‘salt tolerance’ between parents, with five RILs being more tolerant than the more tolerant parent CO39. The reliability of various traits for selecting salt tolerance in large populations was explored by measuring Na+, K+ and K+/Na+ ratios in leaf blades and sheaths after 7 or 21 days of exposure to 100 mM NaCl, and their correlation with various growth components and with leaf injury. The highest correlations were found for Na+ in the leaf blade on day 21 with injury at day 42 in both experiments (r = 0.7). Earlier measurements of Na+ or of injury had lower correlations. The most sensitive growth components were tiller number plant–1 and shoot water content (g water g–1 dry weight), and these were correlated significantly with Na+ and, to a lesser extent, with K+/Na+. These studies showed that exposure for at least 42 days may be needed to clearly demonstrate the beneficial effect of the trait for Na+ exclusion on growth under salinity.
Publisher: Informa UK Limited
Date: 26-07-2016
No related grants have been discovered for Javaid Akhtar.