Skip to Main Content
Root desiccation and drought stress responses of bareroot Quercus rubra seedlings treated with a hydrophilic polymer root dipAuthor(s): Kent G. Apostol; Douglass F. Jacobs; R. Kasten Dumroese
Source: Plant and Soil. 315: 229-240.
Publication Series: Miscellaneous Publication
PDF: Download Publication (255 B)
DescriptionRoot hydrogel, a hydrophilic polymer, has been used to improve transplanting success of bareroot conifer seedlings through effects on water holding capacity. We examined mechanisms by which Terra-sorb Fine Hydrogel reduces damage that occurs when roots of 1-year old, dormant northern red oak (Quercus rubra L.) were subjected to shortterm (1, 3, and 5 h) pre-transplanting desiccation and long-term (45 days) drought stress following transplanting in a controlled environment chamber or greenhouse conditions. Hydrogel-treated seedlings had 80% greater root moisture content than non-root dipped control seedlings following the pre-transplanting desiccation period. Hydrogel reduced root membrane leakiness by 31% 5 h after the desiccation exposure. Hydrogel-treated seedlings did not show greater differences in shoot length, plant dry mass, root volume, net photosynthesis, and stomatal conductance compared with control seedlings following the 45-day drought stress exposure. A reduction in mean number of days to bud break in hydrogel-treated seedlings, combined with delayed tissuemoisture loss (linked to higher stem water potential), suggests that hydrogel may have provided stress protection to aid survival under short-term desiccation, which may be beneficial toward alleviating initial transplanting stress.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationApostol, Kent G.; Jacobs, Douglass F.; Dumroese, R. Kasten. 2009. Root desiccation and drought stress responses of bareroot Quercus rubra seedlings treated with a hydrophilic polymer root dip. Plant and Soil. 315: 229-240.
Keywordsdesiccation, electrolyte leakage, gas exchange, hydrogel, moisture content, northern red oak, stem water potential
- Survival and Growth of Northern Red Oak Seedlings Following a Prescribed Burn
- Using X-Ray Image Analysis to Assess the Viability of Northern Red Oak Acorns: Implications for Seed Handlers
- Effects of Seedling Quality and Family on Performance of Northern Red Oak Seedlings on a Xeric Upland Site
XML: View XML