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[Effects of drought and waterlogging on flag leaf post-anthesis photosynthetic characteristics and assimilates translocation in winter wheat under high temperature].
Ying Yong Sheng Tai Xue Bao 2007; 18(2):333-8YY

Abstract

With winter wheat varieties Yangmai 9 and Yumai 34 as test materials, this paper studied post-anthesis photosynthetic characteristics in flag leaves, the translocation of assimilates and nitrogen stored in vegetative organs before and after anthesis and their relationships with grain yield and quality under different temperature and water conditions. The results showed that high temperature, drought, and waterlogging all had significant negative effects on photosynthetic rate and chlorophyll content (SPAD value) of flag leaves, and the effects of drought and waterlogging were greater under high temperature than under optimum temperature. The translocation amount and rate of assimilates and nitrogen stored in vegetative organs before anthesis declined in the order of drought > normal soil moisture content > waterlogging under optimum temperature, but normal soil moisture content > drought > waterlogging under high temperature. The amount of post-anthesis assimilates translocated into grain declined in the order of normal soil moisture content > waterlogging > drought under optimum temperature, but normal soil moisture content > drought > waterlogging under high temperature, while that of post-anthesis accumulated nitrogen declined in the order of normal soil moisture content > waterlogging > drought under both high and optimum temperature. The starch and protein contents in grains were the lowest under high temperature x waterlogging, but the highest under optimum temperature x normal soil moisture content. Overall, the decrease of grain mass and starch content under high temperature and water stresses was associated with the lower photosynthetic rate and less post-anthesis assimilates accumulation, while grain protein content was related to the translocation amount and rate of nitrogen stored before anthesis.

Authors+Show Affiliations

Key Laboratory of Crop Growth Regulation of Agricul- ture Ministry, Nanjing Agricultural University, Nanjing 210095, China. zhaoh@klia.cnNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

17450736

Citation

Zhao, Hui, et al. "[Effects of Drought and Waterlogging On Flag Leaf Post-anthesis Photosynthetic Characteristics and Assimilates Translocation in Winter Wheat Under High Temperature]." Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology, vol. 18, no. 2, 2007, pp. 333-8.
Zhao H, Dai TB, Jiang D, et al. [Effects of drought and waterlogging on flag leaf post-anthesis photosynthetic characteristics and assimilates translocation in winter wheat under high temperature]. Ying Yong Sheng Tai Xue Bao. 2007;18(2):333-8.
Zhao, H., Dai, T. B., Jiang, D., Jing, Q., & Cao, W. X. (2007). [Effects of drought and waterlogging on flag leaf post-anthesis photosynthetic characteristics and assimilates translocation in winter wheat under high temperature]. Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology, 18(2), pp. 333-8.
Zhao H, et al. [Effects of Drought and Waterlogging On Flag Leaf Post-anthesis Photosynthetic Characteristics and Assimilates Translocation in Winter Wheat Under High Temperature]. Ying Yong Sheng Tai Xue Bao. 2007;18(2):333-8. PubMed PMID: 17450736.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Effects of drought and waterlogging on flag leaf post-anthesis photosynthetic characteristics and assimilates translocation in winter wheat under high temperature]. AU - Zhao,Hui, AU - Dai,Ting-bo, AU - Jiang,Dong, AU - Jing,Qi, AU - Cao,Wei-xing, PY - 2007/4/25/pubmed PY - 2007/12/6/medline PY - 2007/4/25/entrez SP - 333 EP - 8 JF - Ying yong sheng tai xue bao = The journal of applied ecology JO - Ying Yong Sheng Tai Xue Bao VL - 18 IS - 2 N2 - With winter wheat varieties Yangmai 9 and Yumai 34 as test materials, this paper studied post-anthesis photosynthetic characteristics in flag leaves, the translocation of assimilates and nitrogen stored in vegetative organs before and after anthesis and their relationships with grain yield and quality under different temperature and water conditions. The results showed that high temperature, drought, and waterlogging all had significant negative effects on photosynthetic rate and chlorophyll content (SPAD value) of flag leaves, and the effects of drought and waterlogging were greater under high temperature than under optimum temperature. The translocation amount and rate of assimilates and nitrogen stored in vegetative organs before anthesis declined in the order of drought > normal soil moisture content > waterlogging under optimum temperature, but normal soil moisture content > drought > waterlogging under high temperature. The amount of post-anthesis assimilates translocated into grain declined in the order of normal soil moisture content > waterlogging > drought under optimum temperature, but normal soil moisture content > drought > waterlogging under high temperature, while that of post-anthesis accumulated nitrogen declined in the order of normal soil moisture content > waterlogging > drought under both high and optimum temperature. The starch and protein contents in grains were the lowest under high temperature x waterlogging, but the highest under optimum temperature x normal soil moisture content. Overall, the decrease of grain mass and starch content under high temperature and water stresses was associated with the lower photosynthetic rate and less post-anthesis assimilates accumulation, while grain protein content was related to the translocation amount and rate of nitrogen stored before anthesis. SN - 1001-9332 UR - https://www.unboundmedicine.com/medline/citation/17450736/[Effects_of_drought_and_waterlogging_on_flag_leaf_post_anthesis_photosynthetic_characteristics_and_assimilates_translocation_in_winter_wheat_under_high_temperature]_ DB - PRIME DP - Unbound Medicine ER -