Stability and genetic control of morphological, biomass and biofuel traits under temperate maritime and continental conditions in sweet sorghum (Sorghum bicolour)
Stability and genetic control of morphological, biomass and biofuel traits under temperate maritime and continental conditions in sweet sorghum (Sorghum bicolour)
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温带海洋和大陆条件下甜高粱（双色高粱）形态、生物量和生物燃料性状的稳定性和遗传控制
DOI：
10.1007/s00122-015-2538-5
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发表时间：
2015-05
影响因子：
5.4
通讯作者：
Jing, Hai-Chun
中科院分区：
文献类型：
--
作者：
Shen, Xin;Zhang, Li-Min;Rasmussen, Soren K.;Jing, Hai-Chun
在丹麦和中国高粱中发现了8个具有高广义遗传力的形态性状、生物量性状和生物燃料性状，并发现了18个显著的QTL，其中包括一个控制高粱茎汁性状的QTL。甜高粱是一种天然的热带C4作物，具有植株高大、成熟快、茎秆锤度高等特点，在北方国家已成为一种生物能源作物。关于其适应高海拔气候条件的重要特征及其遗传控制知之甚少。利用甜高粱和粒用高粱杂交获得的重组自交系在丹麦和中国进行了5个田间试验，以确定连续3个夏季（短日照、低温和长日照）的形态、生物量和生物燃料性状的稳定性和遗传控制。15个性状中有8个具有较高的广义遗传力。株高与生物量性状呈极显著正相关，而锤度和果汁含量受不同的遗传控制。利用新开发的PAV（presence and absence variant）标记，共检测到53个QTL，其中18个为两国共有，包括一个控制茎汁的位点（LOD score = 20.5，r2 = 37.5%）。在丹麦，抽穗期与生物量和形态性状显著相关，在染色体SBI01和SBI02上检测到2个显著的成熟期QTL，与先前与早期耐冷性相关的QTL共定位，表明加速成熟可能是应对低温胁迫的一种手段。我们的研究结果表明，选择高和快速成熟的高粱植物结合高白利糖度含量代表了北方欧洲育种生物能源作物的高潜力。
Key messageEight morphological, biomass and biofuel traits were found with high broad-sense heritability and 18 significant QTLs discovered including one locus controlling the stem juice trait for sorghum grown in Denmark and China. Sweet sorghum with tall plant, fast maturation and high stem Brix content can be bred as a biofuel crop for Northern Europe.AbstractSweet sorghum (Sorghum bicolour), a native tropical C4crop, has attracted interest as a bioenergy crop in northern countries due to its juice-rich stem and high biomass production. Little is known about the traits important for its adaptation to high altitude climatic conditions and their genetic controls. Recombinant inbred lines derived from a cross between a sweet and a grainkaoliangsorghum were used in five field trials in Denmark and in China to identify the stability and genetic controls of morphological, biomass and biofuel traits during three consecutive summers with short duration, cool temperatures and long days. Eight out of 15 traits were found with high broad-sense heritability. Strong positive correlations between plant height and biomass traits were observed, while Brix and juice content were under different genetic controls. Using newly developed PAV (presence and absence variant) markers, 53 QTLs were detected, of which 18 were common for both countries, including a locus controlling stem juice (LOD score = 20.5,r2= 37.5 %). In Denmark, the heading stage correlated significantly with biomass and morphology traits, and two significant maturity QTLs detected on chromosomes SBI01 and SBI02 co-localised with QTLs previously associated with early-stage chilling tolerance, suggesting that accelerating maturation might be a means of coping with low-temperature stress. Our results suggest that selection for tall and fast maturating sorghum plants combined with high Brix content represents a high potential for breeding bioenergy crop for Northern Europe.
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影响因子：
--
作者：
DOWNES, RW
通讯作者：
DOWNES, RW
影响因子：
56.9
作者：
Elizabeth Pennisi
通讯作者：
Elizabeth Pennisi
影响因子：
3.1
作者：
Wenwei Xu;P. Subudhi;Oswald R. Crasta;D. Rosenow;John E. Mullet;Henry T. Nguyen
通讯作者：
Wenwei Xu;P. Subudhi;Oswald R. Crasta;D. Rosenow;John E. Mullet;Henry T. Nguyen
影响因子：
5.4
作者：
D. Parh;David Jordan;Elizabeth A. B. Aitken;E. Mace;P. Jun-ai;C. McIntyre;Ian D. Godwin
通讯作者：
D. Parh;David Jordan;Elizabeth A. B. Aitken;E. Mace;P. Jun-ai;C. McIntyre;Ian D. Godwin
影响因子：
5.4
作者：
L. R. Veldboom;Michael Lee;W. Woodman
通讯作者：
L. R. Veldboom;Michael Lee;W. Woodman