Coincidence of flowering time and the productivity and quality of cauliflower hybrid seeds

Scientia Agricola

Marcelo Fontanetti Verdial¹  Antonio Ismael Inácio Cardoso¹  Márcio Santos De Lima¹  Francisco Célio Maia Chaves¹ 

[1],UNESP FCA Depto. de Produção VegetalBotucatu SP

关键词: Brassica oleracea;    seed;    hybrid;    self-incompatibility;    Brassica oleracea;    semente;    híbrido;    auto-incompatibilidade;   

DOI  :  10.1590/S0103-90162001000300015

来源: SciELO

【 摘 要 】

The missing of flowering synchronization between the self-incompatible lines in a crop field of cauliflower hybrid seeds besides making the seed production smaller can compromise the genetic purity of them. The coincidence of the flowering time between two cauliflower lines was examined to study its effect on the productivity and quality of hybrid seeds. The treatments consisted of six different sowing dates, every fifteen days, using a self-incompatible tropical line pollinated by a winter line which does not present self-incompatibility. The following characteristics were evaluated: leaf average area and number of flowers per plant, number of siliques per plant, number and weight of seeds per plant, weight of thousand seeds and average number of seeds per silique. The germination standard test and genetic seed purity were determined for each treatment. The coincident flowering season between cauliflower lines affects directly the productivity and the genetic quality of the produced hybrid seeds. The closer the flowering time coincidence between the lines, the greater the number of seeds per silique and the smaller the percentage of non-hybrid seedlings. However, the coincidence of the flowering season between lines was found to influence physiological seed quality.

【 授权许可】

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