Details

Autor(en) / Beteiligte

• Liu, Y L
• Wang, L H
• Li, J Q
• Zhan, Q W
• Zhang, Q
• Li, J F
• Fan, F F

Titel

QTL mapping of forage yield and forage yield component traits in Sorghum bicolor x S. sudanense

Ist Teil von

• Genetics and molecular research, 2015-04, Vol.14 (2), p.3854-3861

Ort / Verlag

Brazil

Erscheinungsjahr

2015

Quelle

Elektronische Zeitschriftenbibliothek - Freely accessible e-journals

Beschreibungen/Notizen

• The sorghum-sudangrass hybrid (Sorghum bicolor x S. sudanense) is an important forage crop. However, little is known about the genetic mechanisms related to forage yield and the 4 forage yield component traits in this forage crop. In this study, a linkage map was constructed with 124 assigned SSR markers using an F2 mapping population derived from the crossing of sorghum Tx623A and sudangrass Sa. Nine quantitative trait loci (QTLs) were detected for forage yield and the 4 forage yield component traits using inclusive composite interval mapping. Five fresh weight QTLs were identified and contributed >50% of the total phenotypic variance. Of these QTLs, all showed additive and dominant effects, but most exhibited mainly dominant effects. These results will provide useful information for improvements in sorghum-sudangrass hybrid breeding.