THE INITIAL ANALYSIS OF THE ABILITY FOR THE GENERATIVE PROPAGATION AND THE LEVEL OF SELF-INCOMPATIBILITY OF INBRED LINES OF CHINESE CABBAGE (Brassica rapa ssp. pekinensis)

摘要

In the years of 2011 and 2013, seventeen inbred lines of Chinese cabbage were evaluated according to the ability for the generative propagation and the expression of self-incompatibility. Most of the lines pollinated in the greenhouse at the open flower stage were characterized by an intermediate level of self-incompatibility and formed less than one seed/silique; the other lines were highly self-incompatible or self-compatible. The lines pollinated at the green bud stage were highly diversified according to the ability for seed development in both years of propagation; however, most of the lines formed sufficient amount of seeds for use as parental components. The average effectiveness of generative propagation after pollination at the open flowerand green bud stages was higher in 2011 than in 2013, probably due to different weather conditions in these years influencing the seed development or inbreeding depression.