Mapping of QTL for kernel abortion caused by in vivo haploid induction in maize (Zea mays L.)

被引：9
|
作者：
Qu, Yanzhi [1 ]
Wu, Penghao [2 ,3 ]
Ren, Jiaojiao [2 ,3 ]
Liu, Zonghua [1 ]
Tang, Jihua [1 ]
Lubberstedt, Thomas [4 ]
Li, Haochuan [1 ,2 ]
Chen, Shaojiang [2 ]
机构：
[1] Henan Agr Univ, Coll Agron, Collaborat Innovat Ctr Henan Grain Crops, Natl Key Lab Wheat & Maize Crop Sci, Zhengzhou, Peoples R China
[2] China Agr Univ, Natl Maize Improvement Ctr, Beijing, Peoples R China
[3] Xinjiang Agr Univ, Coll Agron, Urumqi, Peoples R China
[4] Iowa State Univ, Dept Agron, Ames, IA USA
来源：
PLOS ONE | 2020年 / 15卷 / 02期
基金：
中国国家自然科学基金;
关键词：
CHROMOSOME ELIMINATION; MATERNAL HAPLOIDS; SEED DEVELOPMENT; GENE; ENCODES; PHOSPHOLIPASE; ENDOSPERM; PROTEIN; CELL; GYNOGENESIS;
D O I：
10.1371/journal.pone.0228411
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Kernel abortion is common phenomenon in vivo haploid induction and closely linked with haploid induction rate, but little information of kernel abortion is available and its genetic basis still unclear. We used two mapping populations including 186 and 263 F-2.3 family lines to analyze the different degree of kernel abortion and identify quantitative trait loci (QTL) responsible for kernel abortion during haploid induction. In total 62 putative QTL, accounting for 3.27-14.70% of the phenotypic variation in kernel abortion traits, were detected across all 10 chromosomes. Ten QTL with over 10% contribution to phenotypic variation were affecting the fifth level of endosperm abortion (EnA5th), endosperm abortion (EnA) and total abortion (TA). Co-localization among kernel abortion traits QTL was observed in both populations and among different kernel abortion types. Five overlaps were indentified in the QTL for kernel abortion traits and HIR traits. Maize chromosome bins 3.01-3.02, 3.04-3.06, 4.05-4.06, 5.03-5.04, 8.06 were QTL hotspots for three or four traits related to the kernel abortion during haploid induction. Total kernel abortion rate (TAR) and HIR showed highly significant positive correlation. These findings may help to reveal haploid induction mechanisms and improve haploid production efficiency.
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页数：16
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