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- Title
A large replum-valve joint area is associated with increased resistance to pod shattering in rapeseed.
- Authors
Hu, Zhiyong; Yang, Hongli; Zhang, Liang; Wang, Xinfa; Liu, Guihua; Wang, Hanzhong; Hua, Wei
- Abstract
The structure of the replum was studied in 64 rapeseed lines and in an F population derived from a cross between a high pod shattering resistance line, zy72360, and a susceptible line, R1. The dimensions of the replum close to the pedicel in lines with high silique shattering resistance index (SSRI) were greater than those with low SSRI. The replum-valve joint area index (RJAI) was used to investigate the relationship between the replum size and pod shattering. In the 64 accessions, RJAI displayed wide variation (0.50-4.12 mm), with a variance coefficient of 45.4 %. There were highly significant positive correlations between SSRI and RJAI, with a correlation coefficient of 0.6140. Analysis of RJAI in 276 F individuals further validated the positive correlations between SSRI and RJAI. These results revealed that replum structure was highly associated with pod shattering, and that a thick replum structure could produce high pod shatter resistance. The replum-valve joint area offers a good method to screen high resistance materials beneficial for breeding.
- Subjects
RAPESEED; PLANT population measurement; PLANT anatomy; CELL lines; PLANT breeding
- Publication
Journal of Plant Research, 2015, Vol 128, Issue 5, p813
- ISSN
0918-9440
- Publication type
Article
- DOI
10.1007/s10265-015-0732-9