HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (43) Citing Articles via Google Scholar Google Scholar Articles by Yang, J. Articles by Liu, L. Search for Related Content PubMed Articles by Yang, J. Articles by Liu, L. Agricola Articles by Yang, J. Articles by Liu, L. Related Collections Water Stress Crop Physiology & Metabolism Wheat

Water Deficit–Induced Senescence and Its Relationship to the Remobilization of Pre-Stored Carbon in Wheat during Grain Filling

Dep. of Biology, Hong Kong Baptist Univ., Kowloon Tong, Hong Kong, China

View larger version (28K): [in a new window]   Fig. 1 Changes of leaf water potentials of the semi-winter wheat cultivars Yangmai 158 (A) and Yangmai 931 (B) during the first week when soil drying was applied. NN and HN indicate normal and high levels of nitrogen application at heading time, respectively. WW, MD, and SD are well-watered, mildly dried, and severely dried treatments at grain filling, respectively (see details in the Materials and Methods section). Measurements were made on the flag leaves at midday (1200 h). Vertical bars represent ±SE of the mean where these exceed the size of the symbol

View larger version (38K): [in a new window]   Fig. 2 Changes of nitrogen and chlorophyll content in the flag leaves of the semi-winter wheat cultivars Yangmai 158 (A) and Yangmai 931 (B) after soil drying was applied. NN and HN indicate normal and high levels of nitrogen application at heading time, respectively. WW, MD, and SD are well-watered, mildly dried, and severely dried treatments at grain filling, respectively (see details in the Materials and Methods section). Arrows in the figures indicate the start of soil drying treatments. Vertical bars represent ±SE of the mean where these exceed the size of the symbol

View larger version (25K): [in a new window]   Fig. 3 Changes of lipid peroxidation, shown as malondialdehyde (MDA) content, in the flag leaves of the semi-winter wheat cultivars Yangmai 158 (A) and Yangmai 931 (B) after soil drying was applied. NN and HN indicate normal and high levels of nitrogen application at heading time, respectively. WW, MD, and SD are well-watered, mildly dried, and severely dried treatments at grain filling, respectively (see details in the Materials and Methods section). Arrows in the figures indicate the start of soil drying treatments. Vertical bars represent ±SE of the mean where these exceed the size of the symbol

View larger version (46K): [in a new window]   Fig. 4 Changes of 14C partitioning in the stem plus sheath and grains of the semi-winter wheat cultivars Yangmai 158 (A) and Yangmai 931 (B) after soil drying was applied. NN and HN indicate normal and high levels of nitrogen application at heading time, respectively. WW, MD, and SD are well-watered, mildly dried, and severely dried treatments at grain filling, respectively (see details in the Materials and Methods section). The 14CO2 was fed to the flag leaves at booting stage. Arrows in the figures indicate the start of soil drying treatments. Vertical bars represent ±SE of the mean where these exceed the size of the symbol

View larger version (41K): [in a new window]   Fig. 5 Changes of nonstructural carbohydrate and soluble sugars plus starch in the stem and sheath of the semi-winter wheat cultivars Yangmai 158 (A) and Yangmai 931 (B) after soil drying was applied. NN and HN indicate normal and high levels of nitrogen application at heading time, respectively. WW, MD, and SD are well-watered, mildly dried, and severely dried treatments at grain filling, respectively (see details in the Materials and Methods section). Arrows in the figures indicate the start of soil drying treatments. Vertical bars represent ±SE of the mean where these exceed the size of the symbol

View larger version (43K): [in a new window]   Fig. 6 Changes of abscisic acid (ABA) contents in the flag leaves and grains of the semi-winter wheat cultivars Yangmai 158 (A) and Yangmai 931 (B) after soil drying was applied. NN and HN indicate normal and high levels of nitrogen application at heading time, respectively. WW, MD, and SD are well-watered, mildly dried, and severely dried treatments at grain filling, respectively (see details in the Materials and Methods section). Soil drying treatments were started 9 d after anthesis. Vertical bars represent ±SE of the mean where these exceed the size of the symbol

View larger version (42K): [in a new window]   Fig. 7 Changes of activities of acid invertase (INV) and sucrose synthase (SS) in grains of the semi-winter wheat cultivars Yangmai 158 (A) and Yangmai 931 (B) after soil drying was applied. NN and HN indicate normal and high levels of nitrogen application at heading time, respectively. WW, MD, and SD are well-watered, mildly dried, and severely dried treatments at grain filling, respectively (see details in the Materials and Methods section). Arrows in the figures indicate the start of soil drying treatments. Vertical bars represent ±SE of the mean where these exceed the size of the symbol

View larger version (27K): [in a new window]   Fig. 8 Relationship of abscisic acid (ABA) in leaves and grains with the acid invertase (INV) and synthase sucrose (SS) activities during grain filling in the semi-winter wheat cultivars Yangmai 158 (•) and Yangmai 931 (). Data represent the peak values of each treatment during water withholding. Correlation coefficients (r) are calculated with stars indicating statistical significance at the P0.05 (*) or P0.01 (**) levels