Loading…
Quantity of glucosinolates in 10 cabbage genotypes and their impact on the feeding of Mamestra brassicae caterpillars
In 2011, we studied the glucosinolate content in 5 cultivars and 5 cabbage hybrids grown outdoors in order to study their influence on the feeding of cabbage moth caterpillars (Mamestra brassicae). The selected genotypes were categorized into three groups, early (the growth period from 55 to 70 days...
Saved in:
Published in: | Archives of biological sciences 2014, Vol.66 (2), p.867-876 |
---|---|
Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | In 2011, we studied the glucosinolate content in 5 cultivars and 5 cabbage
hybrids grown outdoors in order to study their influence on the feeding of
cabbage moth caterpillars (Mamestra brassicae). The selected genotypes were
categorized into three groups, early (the growth period from 55 to 70 days),
mid-early (80-90 days) and mid-late (110-140 days), while the samples of
cabbage for glucosinolate analysis were taken at five intervals, during which
we also assessed genotypes for the extent of damage caused by caterpillars.
We found that the feeding of caterpillars affected primarily the mid-early
and mid-late genotypes of cabbage, and that the glucosinolate content among
the different cabbage genotypes varies. The highest content of the analyzed
glucosinolates was established in mid-late genotypes. Glucobrassicin was the
only glucosinolate found in all cabbage genotypes, yet its antixenotic effect
(r=0.20) was very low. We found that sinalbin negatively affects the feeding
of cabbage moth caterpillars in mid-early cabbage genotypes (r=-0.34), while
the same effect of sinigrin on the extent of damage can be observed in
mid-late genotypes (r=-0.27). We have established a strong or moderate
correlation between the gluconapin (r=0.87) and progoitrin (r=0.66) contents
in mid-late genotypes and the extent of damage caused by caterpillars. Our
research proves that different cabbage genotypes are responsible for
different susceptibilities to damage by the cabbage moth, and that one of the
factors of natural resistance of cabbage are also glucosinolates. Despite
this, due to their variability in cabbage we cannot precisely determine the
set of genotypes that would ensure a higher cabbage yield as a result of less
damage caused by the cabbage moth. Thus, we need to identify in more detail
the reasons for the time and quantum variability of glucosinolates in
Brassicaceae.
nema |
---|---|
ISSN: | 0354-4664 1821-4339 |
DOI: | 10.2298/ABS1402867B |