Folia Horticulturae

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Yield and quality of spring Chinese cabbage as affected by different temperature conditions during seedling production

Andrzej Kalisz, Piotr Siwek

Department of Vegetable Crops
Faculty of Horticulture, Agricultural University in Kraków
29 Listopada 54, 31-425 Kraków, Poland
e-mail: akalisz@poczta.onet.pl

The objective of the two-year studies was to estimate the effect of differentiated temperature conditions during seedling production on the yield and content of certain compounds in Chinese cabbage grown in the field for spring harvest. A part of the seedlings subjected to natural low non-freezing temperature for the last 16 days before planting, while the remaining plants grew in optimal conditions (control). The marketable yield increased by 6.37-9.33 t ha-1 as a consequence of low temperature stress during period of seedling raising. Despite of the fact that some plants formed external flower stalks (3.1%) in one year of the experiment, the share of Chinese cabbage heads suitable for trading in the total yield was also higher (by 1.2-5.2%) compared to control plants. However, all plants from seedlings raised at low temperatures formed internal bolts, while there were no flower stalks inside the heads of control cabbage. Seedling treatment had no distinct effect on the accumulation of dry matter, soluble sugar and L-ascorbic acid in Chinese cabbage heads. There was only a slight and not statistically confirmed tendency to the decrease in chlorophyll and carotenoids content in Chinese cabbage grown from seedlings of low temperature. The level of thiocyanates and crude fiber was the highest in control plants, differences amounted to 4.82-5.60 μg KSCN g-1 f.m. and 2.09-2.43% d.m., respectively. Results obtained in this study indicated that either temperature during raising seedlings or weather conditions influenced the Chinese cabbage yield and chemical composition of the heads.

Kalisz A., Siwek P., 2006. Yield and quality of spring Chinese cabbage as affected by different temperature conditions during seedling production. Folia Horticulturae 18/2: 3-15.