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 Related articles in Crop Science Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (10) Citing Articles via Google Scholar Google Scholar Articles by Morrison, L. A. Articles by Mallory-Smith, C. A. Search for Related Content PubMed Articles by Morrison, L. A. Articles by Mallory-Smith, C. A. Agricola Articles by Morrison, L. A. Articles by Mallory-Smith, C. A. Related Collections Weed Management Ecological Risk Assessment Crop Ecology

Jointed Goatgrass (Aegilops cylindrica Host) x Wheat (Triticum aestivum L.) Hybrids

Hybridization Dynamics in Oregon Wheat Fields

^a Herbarium, Dep. of Botany and Plant Pathology, Oregon State Univ., Corvallis, OR 97331-2902
^b Dep. of Crop and Soil Science, Oregon St. Univ., Corvallis, OR 97331-3002

View larger version (32K): [in a new window]   Fig. 1. Eastern Oregon counties (shaded) comprising the primary area of jointed goatgrass infestation. Dots indicate areas for sites where hybrids were collected.

View larger version (95K): [in a new window]   Fig. 2. (a) Spikes of F1 hybrid and parents. From left to right: wheat, F1 (jointed goatgrass = female parent), F1 (wheat = female parent), and jointed goatgrass. (b) Roots of F1 plants with maternal jointed goatgrass spikelet attached at the crown (left) and maternal wheat seed attached at planting depth (right). (c) Spikes of hybrids grown from Oregon backcross seed showing range of variation from jointed goatgrass-like (left) to wheat-like (right). (d) Spike examples illustrating potential steps of introgression from F1 hybrid (first and second to right) via a jointed goatgrass-like backcross hybrid (center) toward jointed goatgrass (left).

View larger version (11K): [in a new window]   Fig. 3. Glu-A1, Glu-B1, and Glu-D1 HMW glutenin subunits found in soft-white wheat cultivars grown in Oregon with Payne number assignments and their respective subunit coding for the male parentage analysis.

View larger version (15K): [in a new window]   Fig. 4. (a) Coding for HMW glutenin parental patterns for jointed goatgrass (cyl) and wheat (aes) and their F1 hybrid (F1). Occasional presence of the By subunit band is indicated by "---". (b) SDS-PAGE gel of HMW glutenin patterns of jointed goatgrass (1), Madsen (2), Madsen x jointed goatgrass F1 synthetic hybrid (3,4), and molecular weight marker (M) in kilo Daltons.

View larger version (59K): [in a new window]   Fig. 5. (a) Coding for HMW glutenin patterns in backcross hybrid seed: F1-like pattern F1-1; wheat-like pattern aes-1; jointed goatgrass like patterns cyl-1 and cyl-2. When the By subunit band as indicated by "---" is absent, the F1-like and wheat-like patterns are designated F1-1 and aes-1, respectively; when it is present, the patterns are designated F1-2 and aes-2, respectively. (b) composite SDS-PAGE gel of HMW glutenin patterns of jointed goatgrass (1); Chinese Spring (5); F1-1 (4,8); aes-1 (6); aes-2 (7); cyl-1 (3); cyl-2 (2).

View larger version (50K): [in a new window]   Fig. 6. SDS-PAGE gel of HMW glutenin patterns for Oregon material from site 113b: jointed goatgrass (3); F1cyl hybrid seed (1,2); Chinese Spring (4).

View larger version (23K): [in a new window]   Fig. 7. HMW glutenin pattern distributions for backcross hybrid seed (a) by year for all seed; (b) by collection for all seed – SP (single-plant collection), Bulk (bulk plant collection); (c) by F1 female parentage—aes (wheat) or cyl (jointed goatgrass) seed-spikelet; (d) by site for the seed-spikelet subsample.