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- Title
Effect of soil and plant water relations on rooting of Populus 2 euramericana stem cuttings.
- Authors
Puri, Sunil; Thompson, F.B.
- Abstract
Presents studies on Populus 2 euramericana (Dode) Guinier cv. ?Robusta? which were conducted to examine the rooting behaviour and changes in water potential during rooting, as influenced by the initial water potential of the cutting at two soil water potentials (m0.006 and m0.06 MPa). Differences in the initial water potential of the cuttings was achieved by three pretreatments i.e., fresh, soaked and dried. Initial f[subshoot] was m1.45, m0.10 and m2.10 MPa in fresh, soaked and dried cuttings, respectively. Soil moisture had a major effect on rooting. Water stressed cuttings took a longer time to root and had fewer roots. Pre-soaking of cuttings stimulated rooting particularly under the drier soil moisture conditions. Initially the water potential of cuttings decreased with time and with the formation of roots it stabilized in all the pretreatments. Resistance-to-flow measurements suggested the development of tyloses and the establishment of new xylem. No relationship was evident between stomatal resistance of leaves and water potential of cuttings. The starch content of the stem cuttings decreased significantly with time irrespective of treatment.
- Subjects
HYBRID black poplar; PLANT stems; MOISTURE; AGRICULTURE
- Publication
New Forests, 2003, Vol 25, Issue 2, p109
- ISSN
0169-4286
- Publication type
Article
- DOI
10.1023/A:1022698827214