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 Bietz, J. A. Articles by Sharma, G. C. Search for Related Content PubMed Articles by Bietz, J. A. Articles by Sharma, G. C. Agricola Articles by Bietz, J. A. Articles by Sharma, G. C.

Differences in Endosperm Proteins Between Yellow Berry and Normal Triticales

Endosperm proteins involved in the expression of the yellow berry (YB) phenomena in triticale (x Triticosecale Wittmack) were investigated. The protein fractions isolated from single kernels of normal and YB triticales were characterized by electrophoresis combined with densitometry and by high-performance gel filtration chromatography. Electrophoresis of gliadins revealed significant qualitative differences between YB and normal types; in addition, multiple biotypes were apparent in some lines. Reduced glutenin subunits of normal and YB triticales had very similar molecular weight distributions, but subtle differences in amino acid composition and sequence were revealed by different detection methods. Results indicated that normal triticales contain more residue protein (unreduced high molecular weight glutenin) than YB kernels. Consequently, numerous subtle quantitative and qualitative differences in amounts of various protein types seem to influence interactions of proteins with each other and with starch. These interactions may lead to the differences in endosperm vitreosity and hardness between normal and YB kernels.

Key Words: X Triticosecale • Triticale • Electrophoresis • Chromatography • Gliadin • Glutenin

Received for publication August 14, 1981.