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 Klassen, A. J. Articles by Larter, E. N. Search for Related Content PubMed Articles by Klassen, A. J. Articles by Larter, E. N. Agricola Articles by Klassen, A. J. Articles by Larter, E. N.

Alpha-amylase Activity and Carbohydrate Content as Related to Kernel Development in Triticale¹

Eight lines of triticale (Triticale hexaploide) selected for variation in degree of kernel shrivelling were analyzed during development and at maturity for -amylase activity, reducing sugars, and starch content. Alpha-amylase activity varied widely among the triticale lines and was inversely correlated with grain density, the index of shrivelling. Differences in -amylase activity in turn were reflected in the reducing sugar values. Starch content of mature grain ranged from 49.1 to 57.1% and was significantly correlated with grain density. Alpha-amylase developmental patterns were similar at early stages for 6A320, a line with better kernel type, and 6A190, a line with poor kernel development. However, at about 55% moisture, -amylase activity in 6A190 began to increase rapidly as compared to 6A320. Reducing sugar patterns were similar to those for -amylase. Patterns of starch development indicated a premature termination of starch deposition in triticale lines with poor kernel characteristics.

Key Words: Wheat-rye hybrids • Kernel shrivellings • Grain density • Starch • Reducing sugars

² Graduate Student, Associate Professor, and Professor, Department of Plant Science.

Received for publication September 12, 1970.