Identification and validation of QTLs controlling multiple traits in sorghum
| Autor: | Qiang Liu, Liu Bin, Guan Yan'an, Yang Yanbing, Rui-Heng Du, Wang Hailian, Zhang Huawen, Er-Ying Cheng, Chen Guiling, Qin Ling |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Brix Biomass Plant Science Biology Marker-assisted selection Quantitative trait locus Sorghum biology.organism_classification 01 natural sciences Crop 03 medical and health sciences Horticulture 030104 developmental biology Agronomy Plant breeding Agronomy and Crop Science Sweet sorghum 010606 plant biology & botany |
| Zdroj: | Crop and Pasture Science. 67:193 |
| ISSN: | 1836-0947 |
| DOI: | 10.1071/cp15239 |
| Popis: | Sweet sorghum (Sorghum bicolor L. Moench) is a promising crop for biofuel and forage production, having strong resilience to multiple stresses and being capable of thriving on marginal land. The main goals in sweet sorghum improvement are to increase biomass and sugar yield. We validated quantitative trait loci (QTLs) controlling plant height, biomass, juice weight and Brix with 181 recombinant inbred lines derived from a cross between Shihong137, a dwarf grain sorghum, and L-Tian, a tall sweet sorghum, under four environments. Seven QTLs for plant height, stem and leaf fresh weight, stem fresh weight and juice weight could be repeatedly identified across four environments. However, three of those major QTLs, qPH7-2, qSLFW9 and qSFW9, had strong epistatic effect. Many QTLs related to biomass production were co-localised with previously known height QTLs, suggesting that plant height is a major trait regulating biomass production. However, qSFW1-2, qSLFW6-1, and qSLFW6-2 were mapped to positions with no known height QTL. We also identified and validated stable qBrix2 across environments. This study provided a genetic basis for integrated approaches, including plant height, to improve sweet sorghum biomass and sugar production. |
| Databáze: | OpenAIRE |
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