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Use of molecular marker diversity to increase forage yield in timothy (Phleum pratenseL.)

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Title: Use of molecular marker diversity to increase forage yield in timothy (Phleum pratenseL.)
Authors: Tanaka, Tsuneki Browse this author
Tamaki, Hiroyuki Browse this author
Ashikaga, Kazunori Browse this author
Fujii, Hiroki Browse this author
Yamada, Toshihiko Browse this author →KAKEN DB
Keywords: forage yield
genetic distance
Phleum pratense L
simple sequence repeat marker
Issue Date: Apr-2013
Publisher: Wiley-Blackwell
Journal Title: Plant Breeding
Volume: 132
Issue: 2
Start Page: 144
End Page: 148
Publisher DOI: 10.1111/pbr.12025
Abstract: Molecular marker technologies may provide a tool to overcome the forage yield plateau in timothy (Phleum pratense L.). Therefore, a study was designed to investigate the relationship between marker-based genetic distance (GD) estimates and yield. Genetic distances were estimated using Dice coefficients framed by 28 simple sequence repeat markers. In Experiment 1, parents with high general combining ability (GCA) from two contrasting first-generation synthetic strains (exhibiting high and low yields) were compared. Average GDs of each strain were 0.74 (high) and 0.68 (low). These differences indicated that GD may be partially the basis for contrasting yields. In Experiment 2, GDs among 40 parents of a polycross were used for calculating general genetic distance (GGD), which is indicative of their allelic complementation. Analyses revealed a significant (P < 0.01) moderate correlation (r) between GGD and GCA for yield (r = 0.45) and a significant (P < 0.01) residual mean square for the regression of yield on GGD, suggesting that considerable non-additive effects were associated with GCA. The results are indicative of the potential use of GD estimation for yield improvement in timothy.
Rights: This is the pre-peer-reviewed version of the following article: Plant Breeding 132(2) 144-148 April 2013, which has been published in final form at
Type: article (author version)
Appears in Collections:北方生物圏フィールド科学センター (Field Science Center for Northern Biosphere) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山田 敏彦

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