Inheritance of Flowering Time in Apricot (Prunus armeniaca L.) and Analysis of Linked Quantitative Trait Loci (QTLs) using Simple Sequence Repeat (SSR) Markers
Inheritance of Flowering Time in Apricot (Prunus armeniaca L.) and Analysis of Linked Quantitative Trait Loci (QTLs) using Simple Sequence Repeat (SSR) Markers
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DOI：
10.1007/s11105-010-0242-9
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发表时间：
2011-06-01
影响因子：
2.1
通讯作者：
Martinez-Gomez, Pedro
中科院分区：
文献类型：
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作者：
Campoy, Jose Antonio;Ruiz, David;Martinez-Gomez, Pedro
在F1选择“Z506-07”（“橙子红“a欧千分率דCurrot”）和西班牙栽培品种“Currot”之间杂交的73株幼苗的BC 1杏后代中，研究了3年期间的开花时间。结果表明，杏开花时间的数量遗传与幼年和环境条件（寒冷积累）的影响，这一性状的评价和表达。利用46个杏和桃的SSR微卫星标记构建了杏和桃8条染色体的11个连锁群的遗传图谱，并进行了数量性状基因座（QTL）的定位。开花时间QTL分析在“Z506-07”的第5连锁群（G5）上发现了一个显著的QTL，解释了大部分的表型变异。发现两个微卫星位点（UDAp-423 r和AMPA-105）与这一重要农艺性状紧密连锁。最后，我们讨论了在3年的研究和有效的标记辅助选择策略应用于杏和其他李育种计划的发展中描述的QTL的稳定性。
Time of flowering was studied during 3 years in a BC1 apricot progeny of 73 seedlings derived from a cross between the F1 selection "Z506-07" ("Orange Red"aEuro parts per thousand x "Currot") and the Spanish cultivar "Currot". Results indicated a quantitative inheritance of flowering time in apricot with an influence of juvenility and environmental conditions (chill accumulation) on the evaluation and expression of this trait. Genetic maps consisting of 11 linkage groups for both parents representing the eight chromosomes of apricot were developed using 46 apricot and peach simple sequence repeat (SSR-microsatellites) markers and were used for the identification of quantitative trait loci (QTL). QTL analysis for flowering time allowed the identification of one significant QTL on the linkage group 5 (G5) of "Z506-07", and explaining most of the phenotypic variation. Two microsatellite loci (UDAp-423r and AMPA-105) were found to be tightly linked to this important agronomic trait. Finally, we discuss the stability of the QTL described during the 3 years of the study and the development of efficient marker-assisted selection strategies applied to apricot and other Prunus breeding programs.