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An APETALA1 ortholog affects plant architecture and seed yield component in oilseed rape (Brassica napus L.)

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Increasing the productivity of rapeseed as one of the widely cultivated oil crops in the world is of upmost importance. As flowering time and plant architecture play a key role in the regulation of rapeseed yield, understanding the genetic mechanism underlying these traits can boost the rapeseed breeding | An APETALA1 ortholog affects plant architecture and seed yield component in oilseed rape Brassica napus L. .den color inherit .ttnd ol .ttnd ul .ttnd dl padding 0 0px 0 20px .ttnd hr margin 10px 0px .ttnd a href javascript void 0 .ttnd a href color inherit dtextscript p text-align left dtextscript img vertical-align middle Shah et al. BMC Plant Biology 2018 18 380 lt br gt https doi.org 10.1186 s12870-018-1606-9 lt br gt lt br gt lt br gt lt br gt lt br gt RESEARCH ARTICLE Open Access lt br gt lt br gt An APETALA1 ortholog affects plant lt br gt architecture and seed yield component lt br gt in oilseed rape Brassica napus L. lt br gt Smit Shah Nirosha L. Karunarathna Christian Jung and Nazgol Emrani lt br gt lt br gt lt br gt Abstract lt br gt Background Increasing the productivity of rapeseed as one of the widely cultivated oil crops in the world is of lt br gt upmost importance. As flowering time and plant architecture play a key role in the regulation of rapeseed yield lt br gt understanding the genetic mechanism underlying these traits can boost the rapeseed breeding. Meristem identity lt br gt genes are known to have pleiotropic effects on plant architecture and seed yield in various crops. To understand lt br gt the function of one of the meristem identity genes APETALA1 AP1 in rapeseed we performed phenotypic analysis lt br gt of TILLING mutants under greenhouse conditions. Three stop codon mutant families carrying a mutation in Bna. lt br gt AP1.A02 paralog were analyzed for different plant architecture and seed yield-related traits. lt br gt Results It was evident that stop codon mutation in the K domain of Bna.AP1.A02 paralog caused significant lt br gt changes in flower morphology as well as plant architecture related traits like plant height branch height and lt br gt branch number. Furthermore yield-related traits like seed yield per plant and number of seeds per plants were also lt br gt significantly altered in the same mutant family. Apart from .