The Effects of Drought Stress on the Photosynthetic Parameters and Dry Leaf Yield of Stevia rebaudina Bertoni

Abstract:

The effects of drought stress on the photosynthesis and dry leaf yield in the different Stevia rebaudina Bertoni germplasms of: IS-1, QF-1, QTZ4, JD-1 and AL-4 was studied with the pot method in greenhouse. The results indicated that the net photosynthetic (Pn), transpiration rate (Tr) and dry leaf production of stevia showed different degree changes with the continuing of drought-stress time. There was no significant change in Pn, Tr and dry leaf production in short-term drought-stress treatment(Ta:5d), but as the time of drought-stress continuing, the Pn were on the declining trend: the Pn of various materials in T2 (without irrigation for 10d) showed maximum decrease, they decreased for 28.85%, 47.04%, 43.03%, 43.61% and 42.25% than that in T1 (without irrigation for 5d), respectively. The variation trend of Tr in various materials were the same to the Pn. And it indicated that there was no appreciable impact on the dry leaf yield in the mild drought (without water for 5d), but with the drought stress continuing, the dry leaf yield of per plant became less and less. The varying degrees decreases of dry leaf yield in different materials with the same drought stress showed that different materials with different tolerance to drought stress.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 4786-4789
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.4786
• Online since: May 2012
• Authors: Guang Xi Ren, Yan Shi
• Keywords: Drought Stress, Photosynthetic Parameters, Stevia Rebaudina Bertoni, Yield

References

[1] Akiko Soejima, Tetsukazu Yahara, and Kuniaki Watanabe: Thirteen new species and two new combinations of Stevia (Asteraceae: Eupatorieae) from Mexico.Brittonia,2001,53(30): 377-395.

DOI: 10.1007/bf02809793

[2] C.M. Ferreira and Walter Handro: Production, maintenance and Plant regeneration from cell suspension cultures of Stevia rebaudiana(Bert.) Bertoni. Plant Cell Reports 1988, 7:123-126.

DOI: 10.1007/bf00270120

[3] Zhao Yongliang,Han Xiao,Liu Jingbin, Xie Yinzhi: Research of Using Membrane Separation Technology to Extract and Separate Steviosides. Chemistry and Bioengineering,2010,27(1): 84-85. In Chinese.

[4] Ren Guangxi, Liu Xiangyang, Shi Yan: The Effects of Steviol Glycosides Blending Liquid on Seeding Growth and Development in Upland Rice. Journal of Plant Sciences, 2009, 4(2):43-48.

DOI: 10.3923/jps.2009.43.48

[5] Liu Xiangyang, Ren Guangxi, Shi Yan: Effect of foliar application steviol glycosides on yield and quality of tomato. Sugar Tech., 2010, 12(1):76-78.

DOI: 10.1007/s12355-010-0016-6

[6] J.E. Brandle,A.Richman A.K. Swanson and B.P. Chapman: Leaf ESTs from Stevia rebaudiana:a resource for gene discovery in diterpene synthesis. Plant Molecular Biology 2002, 50:613-622.

DOI: 10.1023/a:1019993221986

[7] Guo Shuqiao,Yang YUwen and Ni Wanchao: Cloning and Bioinformatic Analysis of Glucosyltransferase Gene UGT76G2 from Stevia Rebaudian. Genomics and Applied Biology, 2009, 28(3):422-428.

[8] Lei Ma, Guangxi Ren, Yan Shi: Effects of potassium fertilizer on diurnal change of photosynthesis in Stevia rebaudiana Bertoni. 2010 International Conference on Cellular, Molecular Biology, Biophysics and Bioengineering, published by IEEE, USA, 2010.12, Vol.Ⅱ, 219-221.

DOI: 10.4028/www.scientific.net/amr.343-344.1087

[9] Xiangyang LIU，Guangxi REN, Yan Shi: The effects of different potassium fertilizer on potassium accumulation amount and yield and quality in stevia rebaudiana bertoni.2010 International Conference on Cellular, Molecular Biology, Biophysics and Bioengineering, published by IEEE,USA,Vol.V, 239-242.