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

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Werner, B. K. Articles by Housley, T. L. Search for Related Content PubMed Articles by Werner, B. K. Articles by Housley, T. L. Agricola Articles by Werner, B. K. Articles by Housley, T. L.

Inheritance of an Ethyl Methanesulfonate-Induced Dwarf in Soybean and Analysis of Leaf Cell Size¹

A dwarf soybean [Glycine max (L.) Merr.] mutant designated MS2060 was found after treatment of seeds of C1421, a backcross-derived strain of ‘Adelphia’, with ethyl methanesulfonate (EMS). Dwarf plants were much smaller than C1421 plants in all measured characteristics and the leaves were somewhat lighter green in color. The MS2060 line was crossed with C1421 and the resulting F₁ plants were intermediate in height between the parents, indicating that the controlling gene showed no dominance. The gene in MS2060 was shown to be nonallelic to the ‘Lincoln’ dwarf (df2), ‘Adams’ dwarf (df3), ‘Hark’ dwarf (df4), and T263 (df5) genes, and was independently inherited with respect to each. The designation, dr6, is assigned to this gene. The gene is maintained as line T286 in the USDA Soybean Genetic Type Collection at Urbana, IL. Mean leaf area of both MS2060 and C1421 plants was compared as was the mean area of leaf epidermal cells from the lower surfaces of these leaves. Cells of MS2060 were 76% smaller than C1421 cells, while MS2060 leaves were 80% smaller than C1421 leaves. The number of epidermal cells per leaf was not significantly different for the two strains, indicating that the difference in leaf size was primarily due to a difference in cell size.

Key Words: Glycine max (L.) Merr. • Discriminant analysis • Allelism tests • Reciprocal crosses • Mutations

² Graduate research assistant, Dep. of Agronomy; supervisory research geneticist, UDSA-ARS, and professor, Dep. of Agronomy; and associate professor, Dep. of Agronomy, Purdue Univ., West Lafayette, IN 47907.

Received for publication October 24, 1986.