HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (7) Citing Articles via Google Scholar Google Scholar Articles by Wuebker, E. F. Articles by Koehler, K. Search for Related Content PubMed Articles by Wuebker, E. F. Articles by Koehler, K. Agricola Articles by Wuebker, E. F. Articles by Koehler, K. Related Collections Crop Growth and Development

SEED PHYSIOLOGY, PRODUCTION & TECHNOLOGY

Flooding and Temperature Effects on Soybean Germination

^a Dep. of Agronomy, Iowa State Univ., Ames, IA 50011
^b Dep. of Statistics, Iowa State Univ., Ames, IA 50011

* Corresponding author (eileen{at}iastate.edu)

During the germination phase of soybean [Glycine max (L.) Merr.] growth, uniform soybean emergence may be reduced when fields are periodically saturated with water from heavy rains and poor drainage. A laboratory study was conducted to determine the effects of timing and duration of flooding, germination temperature, and mechanical damage on the germination of soybean. There were little differences in germination percentage among the flooding duration treatments when flooding began 1 d after the start of imbibition. When seed were flooded 2 or 3 d after the start of imbibition, however, a significant drop in germination percentage occurred in seed flooded for 48 h. Flooding seed 3 d, compared with 1 d, after the start of imbibition was more detrimental, regardless of temperature. Seed injury was observed after only 1 h of flooding. Increasing the duration of flooding from 1 to 48 h at 15°C did not increase injury; however, at 25°C, more seed injury was observed as the duration of flooding increased up to 48 h. Overall, seed were more susceptible to flooding stress at 15°C than at 25°C. These results suggest that soybean seed are susceptible to flooding of 1 to 48 h during the early germination process and the response is influenced by germination stage.