Factors affecting population dynamic and preference of Acyrthosiphon pisum Harris in winter pea lines
Population dynamics and preference of Acyrthosiphon pisum Harris on six winter pea lines in field conditions were studied. Aphid number was recorded on marked plants by counting. The impact of several factors on the population growth and pea aphid choice during the period 2016–2018 was tracked. W...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Plovdiv University Press
2019-07-01
|
| Series: | Journal of BioScience and Biotechnology |
| Subjects: | |
| Online Access: | https://editorial.uni-plovdiv.bg/index.php/JBB/article/view/242/222 |
| Summary: | Population dynamics and preference of Acyrthosiphon pisum Harris on six winter pea
lines in field conditions were studied. Aphid number was recorded on marked plants
by counting. The impact of several factors on the population growth and pea aphid
choice during the period 2016–2018 was tracked. Weather condition strongly affected
on the population dynamics of the pea aphid. The highest positive and significant
effect on pea aphid infestation had the temperature (r = 6.748) followed by humidity
(r =1.992). It was found that a peak in the aphid population density was reached in the
sensitive stage of pod formation, as well as at flowering under a favorable weather
condition. Among winter pea lines, lines 6 and 12A stood out with a significantly
lower aphid density, nitrogen concentration and shorter generative period. They were
much less preferred by aphids and defined as tolerant. Also, the interaction between
aphid density and generative period as well as total nitrogen was positive and
significant. |
|---|---|
| ISSN: | 1314-6238 1314-6246 |