Publication details

Influence of high temperatures on seed development of Brassica napus cultivars



Year of publication 2018
Type Conference abstract
MU Faculty or unit

Central European Institute of Technology

Description Crop production is dramatically affected by environmental conditions. In past decades, the average annual temperatures have arisen worldwide and current climate models predict temperature increase of 0,2 °C per decade. In crops such as maize and rice high temperatures might cause a decline by 5 to 17% of average grain yield for every 1oC temperature rise. High temperatures affect not only overall morphology of plant but also development and viability of both female and male gametes, which partly results in heat-induced sterility. Our research aims to understand how high temperatures would affect seed development in Brassica napus (rapeseed), an oilseed crop widely cultivated in Europe. Our study includes an analysis of the morphological changes in yield traits such as silique length, seed number, embryo development and number of branches in three Brassica napus cultivars (DH12075, Westar, Topas DH4079) in three different day temperatures (22 °C, 28 °C, 34 °C). Alterations of seed size and embryo morphology was analyzed daily over a period of 14 days after pollination. Most importantly yield traits (number of seeds, weight of 1000 seeds, flowering time, number of siliques on the main stem) was evaluated.In response to high temperatures plants adapt their developmental program, notably by altering their hormone levels and signaling. And further analyses are in progress to identify changes in the hormonal response to high temperatures during early seed development in Brassica napus.
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