Sensitivity of Brassica oleracea seed germination to hypoxia: A QTL analysis
UNSPECIFIED. (2005) Sensitivity of Brassica oleracea seed germination to hypoxia: A QTL analysis. PLANT SCIENCE, 169 (4). pp. 753-759. ISSN 0168-9452Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.plantsci.2005.05.026
Reduced oxygen availability can have a major impact on germination and seedling emergence in the field. The effects of oxygen availability on the germination of Brassica oleracea seeds and their sensitivity to hypoxia were investigated to determine whether they have a genetic basis and to identify loci involved in the determination of the trait. Seeds were produced, under the same environmental conditions, from 95 doubled haploid progeny lines of a mapping population from a cross between a rapid cycling Chinese kale (Al2DHd) and a calabrese (GDDH33) parent. The sensitivity of the parent lines to oxygen deprivation was characterised at a range of oxygen tensions. Seeds from all lines were then screened for their ability to germinate at 5% oxygen and data were subjected to quantitative trait loci (QTL) mapping analysis. Seed germination from the GDDH33 parent was greater than from the Al2DHd parent and sensitivity to reduced oxygen availability segregated in the population in a continuous distribution. Significant QTL were identified on linkage groups 02 and the presence of others on 08 and 09 was suggested. The data indicate that this trait is under genetic control and that the QTL on 08 may be a general stress QTL influencing the rate of germination, whereas that on 02 may be oxygen stress specific and influencing a threshold that determines the number of seeds capable of germination. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry
S Agriculture > SB Plant culture
|Journal or Publication Title:||PLANT SCIENCE|
|Publisher:||ELSEVIER IRELAND LTD|
|Official Date:||October 2005|
|Number of Pages:||7|
|Page Range:||pp. 753-759|
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