Kinetics and Spatial Distribution of Leaf Elongation of Wheat (Triticum aestivum L.) under Saline Soil Conditions

2000 ◽  
Vol 161 (4) ◽  
pp. 575-582 ◽  
Author(s):  
Yuncai Hu ◽  
Karl‐Heinz Camp ◽  
Urs Schmidhalter
Keyword(s):  
Triticum Aestivum ◽  
Spatial Distribution ◽  
Saline Soil ◽  
Triticum Aestivum L ◽  
Soil Conditions ◽  
Leaf Elongation

Spatial distributions of inorganic ions and sugars contributing to osmotic adjustment in the elongating wheat leaf under saline soil conditions

1998 ◽  
Vol 25 (5) ◽  
pp. 591 ◽  
Author(s):  
Yuncai Hu ◽  
Urs Schmidhalter
Keyword(s):  
Osmotic Adjustment ◽  
Saline Soil ◽  
Inorganic Ions ◽  
Triticum Aestivum L ◽  
Soil Conditions ◽  
Spatial Distributions ◽  
Elongation Zone ◽  
Leaf Base ◽  
Deposition Rates ◽  
Wheat Leaf

In this study, we quantified the spatial distributions of inorganic ions and sugars contributing to osmotic adjustment and their net deposition rates in the elongating and mature zones of leaf 4 of the main stem of spring wheat (Triticum aestivum L. cv. Lona) during its linear growth phase under saline soil conditions. Plants were grown in growth chambers in soil irrigated/treated with nutrient solution containing either no added or 120 mM NaCl. The sampling was conducted on the 3rd day after emergence of leaf 4 at 3 and 13 h into the 16 h photoperiod. The patterns of spatial distributions of total osmoticum, cation, anion and sugar contents (mmol kg-1 H2O) were distinct and were affected by salinity. The total osmoticum content in the region between 0 and 60 mm above the leaf base differed between the two harvests at 120 mM NaCl. Net deposition rates of total osmotica, cations, anions, and sugars (mmol kg-1 H2O h-1) in both treatments increased from the base of the leaf to the most actively elongating location and then decreased near the end of the elongation zone. Contributions of cations, anions, and sugars to osmotic adjustment varied with distance from the leaf base, and were about 21–30, 15–21, and 13%, respectively, in the elongation zone. We suggest that the accumulation of solutes under saline conditions occurs both by increasing the net deposition rate of osmotica and by reducing growth.

Uptake and translocation of triadime66fon by wheat (Triticum aestivum L.) grown in hydroponics and soil conditions

2021 ◽  
pp. 127011
Author(s):  
Yu Sumei ◽  
Li Xing ◽  
He Shuhong ◽  
Zhang Hongchao ◽  
Jin Maojun ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Triticum Aestivum L ◽  
Soil Conditions

Spatial distributions and net deposition rates of Fe, Mn and Zn in the elongating leaves of wheat under saline soil conditions

2000 ◽  
Vol 27 (1) ◽  
pp. 53 ◽  
Author(s):  
Yuncai Hu ◽  
Sabine von Tucher ◽  
Urs Schmidhalter
Keyword(s):  
Linear Growth ◽  
Saline Soil ◽  
Leaf Growth ◽  
Distribution Patterns ◽  
Triticum Aestivum L ◽  
Soil Conditions ◽  
Spatial Distributions ◽  
Elongation Zone ◽  
Deposition Rates ◽  
Silty Loam

In this study, we quantified the spatial distributions of Fe, Mn and Zn and their net deposition rates in the elongating and mature zones of leaf 4 on the main stem of spring wheat (Triticum aestivum L.) on a millimetre scale during its linear growth phase under saline soil conditions. Plants were grown in an illitic-chloritic silty loam with 0 and 120 mМ NaCl in growth chambers. The sampling was conducted on the 3rd day after leaf 4 emerged during the photoperiod. The patterns of spatial distributions of Fe, Mn and Zn concentrations (mmol kg–1 FW) in the growing leaves were distinct. Salinity affected the distri-bution pattern of Fe concentration on the FW basis, whereas it did not affect those of the Zn and Mn. The distribution patterns of Fe and Mn differed from those for N, P, K, Ca and Mg found in a previous study, whereas the distribution pattern of Zn was similar to those of Mg, P and N. The spatial distribution of the net deposition rates (mmol kg–1 FW h–1) in both treatments demonstrated the strongest sink for the micronutrients in the elongation zone, and their net deposition rates were enhanced by 120 mМ NaCl at the middle of the elongation zone. From the results, we conclude that the inhibition of leaf growth of wheat is probably not due to the effect of salinity on Fe, Mn and Zn in leaves.

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