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[Responses of wheat seedlings root growth and leaf photosynthesis to drought stress].
Ying Yong Sheng Tai Xue Bao 2012; 23(3):724-30YY

Abstract

Taking drought-sensitive wheat cultivar Wangshuibai and drought-tolerance cultivar Luohan 7 as test materials, a hydroponic experiment was conducted to study the effects of drought stress on root system morphology, physiological characteristics and leaf photosynthesis of wheat seedlings, aimed to elucidate the adaptation mechanisms to drought stress. Under drought stress, the root vitality of the cultivars increased markedly, but the root number and root surface area decreased. Drought stress decreased relative water content and increased the ratio of bound water to free water in leaves of Wangshuibai, but had less effects on Luohan 7. Drought stress decreased, the leaf chlorophyll content, Pn g(s), Ci, and transpiration rate of the two cultivars, but had no significant effects on leaf chlorophyll content and Pn of Luohan 7. Drought stress decreased the leaf area of the two cultivars and the root biomass, shoot biomass, and plant biomass of Wangshuibai, but had no significant effects on Luohan 7. The results indicated that under drought stress, drought-tolerant wheat cultivar was able to compensate decreased root absorption area and retain higher root water uptake capability via enhancing root vitality and maintaining higher root biomass, and further, to keep higher leaf photosynthetic area and Pn to mitigate the inhibition of drought on wheat seedlings growth.

Authors+Show Affiliations

Nanjing Agricultural University, Nanjing 210095. mafuju1234@163.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

chi

PubMed ID

22720617

Citation

Ma, Fu-Ju, et al. "[Responses of Wheat Seedlings Root Growth and Leaf Photosynthesis to Drought Stress]." Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology, vol. 23, no. 3, 2012, pp. 724-30.
Ma FJ, Li DD, Cai J, et al. [Responses of wheat seedlings root growth and leaf photosynthesis to drought stress]. Ying Yong Sheng Tai Xue Bao. 2012;23(3):724-30.
Ma, F. J., Li, D. D., Cai, J., Jiang, D., Cao, W. X., & Dai, T. B. (2012). [Responses of wheat seedlings root growth and leaf photosynthesis to drought stress]. Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology, 23(3), pp. 724-30.
Ma FJ, et al. [Responses of Wheat Seedlings Root Growth and Leaf Photosynthesis to Drought Stress]. Ying Yong Sheng Tai Xue Bao. 2012;23(3):724-30. PubMed PMID: 22720617.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Responses of wheat seedlings root growth and leaf photosynthesis to drought stress]. AU - Ma,Fu-Ju, AU - Li,Dan-Dan, AU - Cai,Jian, AU - Jiang,Dong, AU - Cao,Wei-Xing, AU - Dai,Ting-Bo, PY - 2012/6/23/entrez PY - 2012/6/23/pubmed PY - 2013/9/13/medline SP - 724 EP - 30 JF - Ying yong sheng tai xue bao = The journal of applied ecology JO - Ying Yong Sheng Tai Xue Bao VL - 23 IS - 3 N2 - Taking drought-sensitive wheat cultivar Wangshuibai and drought-tolerance cultivar Luohan 7 as test materials, a hydroponic experiment was conducted to study the effects of drought stress on root system morphology, physiological characteristics and leaf photosynthesis of wheat seedlings, aimed to elucidate the adaptation mechanisms to drought stress. Under drought stress, the root vitality of the cultivars increased markedly, but the root number and root surface area decreased. Drought stress decreased relative water content and increased the ratio of bound water to free water in leaves of Wangshuibai, but had less effects on Luohan 7. Drought stress decreased, the leaf chlorophyll content, Pn g(s), Ci, and transpiration rate of the two cultivars, but had no significant effects on leaf chlorophyll content and Pn of Luohan 7. Drought stress decreased the leaf area of the two cultivars and the root biomass, shoot biomass, and plant biomass of Wangshuibai, but had no significant effects on Luohan 7. The results indicated that under drought stress, drought-tolerant wheat cultivar was able to compensate decreased root absorption area and retain higher root water uptake capability via enhancing root vitality and maintaining higher root biomass, and further, to keep higher leaf photosynthetic area and Pn to mitigate the inhibition of drought on wheat seedlings growth. SN - 1001-9332 UR - https://www.unboundmedicine.com/medline/citation/22720617/[Responses_of_wheat_seedlings_root_growth_and_leaf_photosynthesis_to_drought_stress]_ DB - PRIME DP - Unbound Medicine ER -