Articles
SCREENING METHOD FOR RESISTANCE TO TIPBURN IN CHINESE CABBAGE
Article number
637_22
Pages
189 – 193
Language
English
Abstract
Three Chinese cabbage (Brassica campestris L. ssp. pekinensis) cultivars and one breeding line were evaluated for resistance to tipburn at the seedling stage of growth when grown in perlite and watered with standard and modified Hoagland solution.
Tipburn was induced using Hoagland solution without calcium and with high-level nitrogen.
Symptoms developed quickly and became more serious with increased ammonium nitrate in the absence of calcium.
Furthermore, tipburn occurred earlier in solutions short of both calcium and trace elements, in which the seedlings were dwarfish and yellow.
The calcium content of young leaves in the calcium deficient treatment was 0.157% of dry leaf weight, which was 8.3% that of the check. Jing Spring King was resistant, and breeding line 99-481 was highly susceptible to tipburn.
The results of the seedling test were consistent with field results.
Tipburn was induced using Hoagland solution without calcium and with high-level nitrogen.
Symptoms developed quickly and became more serious with increased ammonium nitrate in the absence of calcium.
Furthermore, tipburn occurred earlier in solutions short of both calcium and trace elements, in which the seedlings were dwarfish and yellow.
The calcium content of young leaves in the calcium deficient treatment was 0.157% of dry leaf weight, which was 8.3% that of the check. Jing Spring King was resistant, and breeding line 99-481 was highly susceptible to tipburn.
The results of the seedling test were consistent with field results.
Authors
Y.J. Yu, X.Y. Zhao, J.B. Xu
Keywords
Brassica campestris, calcium deficiency
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