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

This Article Abstract 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 Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Brauer, D. Articles by Staley, T. Search for Related Content PubMed Articles by Brauer, D. Articles by Staley, T. Agricola Articles by Brauer, D. Articles by Staley, T. Related Collections Root Growth Plant Nutrition Root Development

Early Developmental Responses of White Clover Roothair Lengths to Calcium, Protons, and Aluminum in Solution and Soil Cultures

^a USDA-ARS, Dale Bumpers Small Farms Research Center, 6883 South Highway 23, Booneville, AR 72927
^b USDA-ARS, Appalachian Farming Systems Research Center, 1224 Airport Road, Beaver, WV 25813

View larger version (17K): [in a new window]   Fig. 1. Effects of bulk solution pH and Ca concentrations on roothair length. Roothairs were measured for seedlings incubated at 0.04 (•), 0.4 () and 4 () mM Ca at solution pH of 4.0, 4.5, 5, and 6. Standard errors for comparing different Ca by pH interaction means were 3.1 µm, a value smaller than the data symbols.

View larger version (13K): [in a new window]   Fig. 2. Effects of predicted root surface pH on roothair length. Values for root surface pH were calculated as described by Kinraide (1994) for the solution concentrations in Fig. 1. Data symbols are defined in the legend for Fig. 1.

View larger version (18K): [in a new window]   Fig. 3. Effects of solution Al concentration on roothair length. Roothair growth was measured for seedlings incubated at various concentrations of Al at 0.4 Ca mM and pH of 4.5. Standard errors for comparing means from different Al concentrations are represented by bars.