Author:
BIAŁCZYK JAN,LECHOWSKI ZBIGNIEW,LIBIK ANDRZEJ
Abstract
The synthesis and accumulation of tannins on tomato seedlings are regulated by environmental
factors. The variation in the content of tannins was sufficiently important to bring about the
occurrence of significant differences in the numbers of glasshouse whitefly on the seedlings. During
a 2-week experiment, the treatments included mechanical wounding (20 prickings per cm2), spraying
with kinetin solutions of 10−4 mol/dm3, plant growth regulators, and the atmosphere enrichment to
680 μmol CO2/mol air, the content of tannins being increased by c. 40, 70, 10–45 and 25% above the
values obtained in the control. These results were correlated with a decrease in the numbers of insects
occurring on the seedlings by c. 35, 45, 8–29 and 18%, respectively. Contrary to the above results the
spraying with solutions of abscisic acid, gibberellic acid, and the incubation of plants in an
atmosphere containing 170 μmol CO2/mol air, reduced the content of tannins by c. 69, 22 and 25%,
respectively. This was reflected in the respective increases by c. 70, 40 and 35% in the numbers of
insects occurring on the seedlings. The obtained results suggest that tannins seem to have a dosage-dependent effect on glasshouse whitefly. Decreasing the host plant quality by increasing tannin
content may act as an important selective agent limiting the losses brought about by glasshouse
whitefly in tomato cultivation.
Publisher
Cambridge University Press (CUP)
Subject
Genetics,Agronomy and Crop Science,Animal Science and Zoology
Cited by
12 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献