Chin J Plan Ecolo ›› 2010, Vol. 34 ›› Issue (9): 1075-1083.doi: 10.3773/j.issn.1005-264x.2010.09.008

• Research Articles • Previous Articles     Next Articles

Clonal integration enhances performance of Cynodon dactylon subjected to submergence

ZHANG Xiang-Ying1,2; FAN Da-Yong1; XIE Zong-Qiang1*; XIONG Gao-Ming1; and LI Zhao-Jia1,2   

  1. 1State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;

    2Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-05-24 Online:2010-10-08 Published:2010-09-01
  • Contact: XIE Zong-Qiang

Abstract: Aims Despite extensive studies on effects of clonal integration in the past three decades, little is known about the effects of clonal integration on the performance of waterlogged clonal plants. Our objective was to test the hypothesis that clonal integration could improve performance of Cynodon dactylon, a stoloniferous clonal herb commonly found in riparian areas of reservoirs, under waterlogging stress. Methods Relatively young apical ramets of C. dactylon clonal fragments were submerged in water at depths of 0 (control), 5 and 15 cm, and their connections to the relatively old basal ramets of the fragments under normal conditions were either severed (preventing clonal integration) or not (allowing integration). Performances of apical ramets, basal ramets and whole fragments were investigated after one month of treatment. Meanwhile, chlorophyll fluorescence parameters (Fv/Fm, maximum quantum yield of PSII; Yield, effective quantum yield of PSII) were measured. Important findings Severing the stolon connection significantly decreased the growth of apical ramets under submergence in terms of biomass, total stolon length and number of ramets. Submergence also significantly decreased the growth of apical ramets, but had little effects on basal ramets. Performance of both basal ramets and clonal fragments was enhanced if the basal ramets were connected with the apical ramets subjected to 5 cm depth of submergence. However, stolon severing treatment had little effects on chlorophyll fluorescence parameters of both apical ramets and basal ramets. Results indicate that clonal integration increased performance of waterlogged ramets and the growth of non-waterlogged connected ramets. Clonal integration could help C. dactylon resist submergence stress.

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[1] CHENG Hong-Yan SONG Song-Quan. Advances in Nitric Oxide Biology of Plants[J]. Chin Bull Bot, 2005, 22(06): 723 -737 .
[2] LI Yuan-Li JIANG Yuan-Qing ZHAO Wu-Ling YEN Lung-Fei. Cloning and Sequence Analysis of Actin Gene from Millet (Setaria italica)[J]. Chin Bull Bot, 2002, 19(03): 310 -316 .
[3] Huang Jian-qin Zhou Jian Fan Ru-wen. The Observation of Cell phytomorphology of the Double Fertilization and Embryogenesis in Liriodendron Chinense( Hemsl) Sary[J]. Chin Bull Bot, 1995, 12(03): 45 -47 .
[4] XIE Qing-Hua WU Yi-Xin SANG Lin XIE Shi-Qing. Tissue Culture and Rapid Propagation of Nicotiana tabacum ‘K326’[J]. Chin Bull Bot, 2005, 22(01): 50 -53 .
[5] HUANG Guo-Cun;ZHU Sheng-Wei;DONG Yue-Mei and SUN Jing-San. Green Fluorescent Protein and Its Application in Plant Research[J]. Chin Bull Bot, 1998, 15(05): 24 -30 .
[6] . [J]. Chin Bull Bot, 1999, 16(增刊): 66 .
[7] Guan Kang-lin. A Studies on Light Germination in Paulownia and Casuarina[J]. Chin Bull Bot, 1985, 3(02): 19 -20 .
[8] Hao Sui and zheng Guo-chang. [J]. Chin Bull Bot, 1983, 1(01): 63 -64 .
[9] Leqin Zhang. Carbon Storage of Forest Vegetation in Chizhou of Anhui Province[J]. Chin Bull Bot, 2011, 46(5): 544 -551 .
[10] LIANG Yu and YAO Dun-Yi. About the Totipotency of Somatic Cells[J]. Chin Bull Bot, 1998, 15(04): 41 -44 .