Abstract:

The morphological and physiological responses of two Welsh onion cultivars, e.g. Dongjingxiahei and Tongguangyibentai, to different degree of shading, were studied. The results showed that the plant height, water content, chlorophyll content and Vc content were increased after the two shading treatment, respectively. However the content of soluble sugar was declined. The stem diameter responded differently to different degree of shading.