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QTL mapping of bio-energy related traits in Sorghum

文献类型： 外文期刊

作者： Guan, Yan-an 1 ; Wang, Hai-lian 1 ; Qin, Ling 2 ; Zhang, Hua-wen 2 ; Yang, Yan-bing 2 ; Gao, Feng-ju 3 ; Li, Ru-yu 2 ; Wa 1 ;

作者机构： 1.Shandong Agr Univ, Coll Agron, Tai An 271018, Shandong, Peoples R China

2.Shandong Acad Agr Sci, Crop Res Inst, Jinan 250100, Peoples R China

3.Dezhou Acad Agr Sci, Dezhou 253000, Peoples R China

关键词： Brix;Genetic linkage map;Juice weight;Plant height;Stem and leaf fresh weight;Sorghum bicolor

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

ISSN： 0014-2336

年卷期： 2011 年 182 卷 3 期

页码：

收录情况： SCI

摘要： Plant height (PHT), stem and leaf fresh weight (SLFW), juice weight (JW) and sugar content of stem (Brix) are important traits for biofuel production in sweet Sorghum. QTL analysis of PHT, SLFW, JW and Brix was conducted with composite interval mapping using F-2 and F-2:3 populations derived from the cross between grain Sorghum (Shihong137) x sweet Sorghum (L-Tian). Three QTLs controlling PHT were mapped on SBI-01, SBI-07 and SBI-09 under four different environments. These QTLs could explain 10.16 to 45.29% of the phenotypic variance. Two major effect QTLs on SBI-07 and SBI-09 were consistently detected under four environments. Eight QTLs controlling SLFW were mapped across three environments and accounted for 5.49-25.36% of the phenotypic variance. One major QTL on SBI-09 located between marker Sb5-206 and SbAGE03 was observed under three environments. Four QTLs controlling Brix were identified under two environments and accounted for 11.03-17.65% of the phenotypic variance. Six QTLs controlling JW were detected under two environments, and explained 6.63-23.56% of the phenotypic variance. QTLs for JW on SBI-07 and SBI-09 were consistent in two environments showing higher environmental stability. In addition, two chromosome regions on SBI-07 and SBI-09 were identified in our study having major effect on PHT, SFLW and JW. The results would be useful for the genetic improvement of sweet Sorghum to be used for biofuel production.

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