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 Hare, R. A. Search for Related Content PubMed Articles by Hare, R. A. Agricola Articles by Hare, R. A.

Anatomical Location and Inheritance of Variegated Red Seed Coat Color in Hexaploid Wheat

NSW Agriculture. Agric. Res. Ctr, RMB 944, Calala Lane, Tamworth NSW 2340

^* Corresponding author.

Inherited somatic variegations in seed coat in a number of species, including maize (Zea mays L.), have been the subject of considerable study and have led to an expanded understanding of gene expression and control; however, there are no reports of such studies in hexaploid wheat (Triticum aestivum L. emend. Thell.). The anatomical location and inheritance of variegated red seed coat color in a hexaploid wheat line, 10859, was investigated. Line 10859 was crossed to ‘Sundor’ (white kernel), ‘Selkirk’ (three-gene red kernel) and a purple pericarp line, 42502 (complementary two-gene purple kernel). Color variegation or sectoring was located in the seed coat tissue of the pericarp by microscopic dissection. Kernel color and seed coat color variegation were scored on kernels from F₂ plants from the above crosses. The data indicated that recessive alleles at the variegation locus regulate the expression of red seed coat pigment, which is controlled by dominant alleles at one of three R loci. The identity of this R locus is unknown. Data suggests that the variegation and R loci are not linked. This system, although rare in wheat, provides some interesting and potentially valuable avenues for cell and genetic research.

Received for publication April 1, 1991.