Genetic analysis of recombinant inbred lines for Sorghum bicolor × Sorghum propinquum.
Genetic analysis of recombinant inbred lines for Sorghum bicolor × Sorghum propinquum.
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DOI：
10.1534/g3.112.004499
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发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
Paterson AH
中科院分区：
文献类型：
--
作者：
Kong W;Jin H;Franks CD;Kim C;Bandopadhyay R;Rana MK;Auckland SA;Goff VH;Rainville LK;Burow GB;Woodfin C;Burke JJ;Paterson AH
我们描述了一个重组自交系（RIL）群体的161 F5基因型的最广泛的整倍体杂交，可以作出栽培高粱（Sorghum bicolor）使用常规技术，S。bicolor × Sorpinquum，分离了许多与植物结构、生长发育、繁殖和生活史相关的性状。遗传图谱的构建。bicolor × S. propinquumRILs包含141个位点，分布在10个连锁群上，总长度为773.1cM。虽然遗传图谱的DNA标记密度非常适合于数量性状基因座作图和样本的基因组，我们以前的观察，高粱近着丝粒异染色质是不稳定的重组是突出的发现，在高粱中的重组的绝大多数是集中在常染色质的小区域，是最远的染色体。RIL群体在S. bicolor parent was well adapted（indeed breed for）but the S.例如，propinquum亲本没有在很大程度上消除短日照开花的等位基因，该等位基因混淆了许多其他性状，使我们能够绘制以前无法检测的开花的新数量性状基因座。在该RIL群体的发育中积累的额外重组也可能提高了杂合子过量的顶点的分辨率，这是F5代中杂合子过量的丰度大于F2代的原因。色葡萄bicolor × S. propinquum RIL群体提供了优于早代群体的优势，这将为调节植物生长和发育的遗传、环境和生理/生化因素提供新的线索。
We describe a recombinant inbred line (RIL) population of 161 F5 genotypes for the widest euploid cross that can be made to cultivated sorghum (Sorghum bicolor) using conventional techniques, S. bicolor × Sorghum propinquum, that segregates for many traits related to plant architecture, growth and development, reproduction, and life history. The genetic map of the S. bicolor × S. propinquum RILs contains 141 loci on 10 linkage groups collectively spanning 773.1 cM. Although the genetic map has DNA marker density well-suited to quantitative trait loci mapping and samples most of the genome, our previous observations that sorghum pericentromeric heterochromatin is recalcitrant to recombination is highlighted by the finding that the vast majority of recombination in sorghum is concentrated in small regions of euchromatin that are distal to most chromosomes. The advancement of the RIL population in an environment to which the S. bicolor parent was well adapted (indeed bred for) but the S. propinquum parent was not largely eliminated an allele for short-day flowering that confounded many other traits, for example, permitting us to map new quantitative trait loci for flowering that previously eluded detection. Additional recombination that has accrued in the development of this RIL population also may have improved resolution of apices of heterozygote excess, accounting for their greater abundance in the F5 than the F2 generation. The S. bicolor × S. propinquum RIL population offers advantages over early-generation populations that will shed new light on genetic, environmental, and physiological/biochemical factors that regulate plant growth and development.
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影响因子：
3.8
作者：
Jang, C. S.;Kamps, T. L.;Paterson, A. H.
通讯作者：
Paterson, A. H.
影响因子：
56.9
作者：
PATERSON, AH;LIN, YR;IRVINE, JE
通讯作者：
IRVINE, JE
影响因子：
7
作者：
Ming, R;Liu, SC;Paterson, AH
通讯作者：
Paterson, AH
影响因子：
3.1
作者：
Lin, YR;Zhu, LH;Paterson, AH
通讯作者：
Paterson, AH
影响因子：
5.4
作者：
Kim, Changsoo;Zhang, Dong;Paterson, Andrew H.
通讯作者：
Paterson, Andrew H.