Influence of soil drought stress on photosynthesis, carbohydrates and the nitrogen and phophorus absorb in different section of leaves and stem of Fugi/M.9EML, a young apple seedling

  • Zhang Jie
  • Yao Yuncong
  • John G Streeter
  • David C Ferree

Abstract

Drought is the most significant limiting factor for plant cultivation. Greenhouse-grown 1-year-old potted M.9EMLA apple trees (Malus domestica Borkh.) (after growing for 6 weeks) were subjected to drought stress by withholding water for an additional six-week period. The photosynthesis, carbohydrates and the nitrogen (N), phosphorus (P) absorb in the upper, middle and lower leaves of the seedlings were determined. The results revealed that drought stress obviously decreased the photosynthesis and carbohydrates contents in the leaves at all sections of shoot compared with the control. Sorbitol and glucose concentrations increased over time and was kept at a higher level during the drought stress period whereas sucrose concentration declined. N content in the leaves kept a flat trend and was higher than that of the control while P concentration decreased compared with the control. These results demonstrated that drought stress prevented N and P absorbtion and decreased RWC of apple leaves, which caused the decline of photosynthesis and transpiration. Thus, the direct phenotype was the slowed growth which was specifically expressed in decreased plant height, number of leaves, average leaf area and stem diameter.

Keywords: Malus domestica Borkh, sorbitol, water deficit, transpiration

African Journal of Biotechnology Vol. 9(33), pp. 5320-5325, 16 August, 2010

Author Biographies

Zhang Jie
Department of plant science and technology, Beijing University of Agriculture, Beijing, 102206 China
Yao Yuncong
Department of plant science and technology, Beijing University of Agriculture, Beijing, 102206 China
John G Streeter
Department of Horticulture and Crop Science, Ohio State University and OARDC,1680 Madison Avenue, Wooster, Ohio 44691 USA
David C Ferree
Department of Horticulture and Crop Science, Ohio State University and OARDC,1680 Madison Avenue, Wooster, Ohio 44691 USA
Published
2013-08-09
Section
Articles

Journal Identifiers


eISSN: 1684-5315