Features of bird-cherry that inhibits the breeding of the population Rhopalosiphum padi (L.) (Hemiptera: Sternorrhyncha: Aphididae)
Laen...
Kuupäev
2021
Kättesaadav alates
Autorid
Gandrabur, E.S.
Vereschagina, A.B.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Long-term studies (2012–2018) of the formation of the Rhopalosiphum padi (L.)
heteroecious population (number of remigrants, oviparae and eggs in autumn, number of perished
eggs, fundatrices larvae, timing of flight of emigrants in spring) on the two samples of primary
host Padus avium Mill. and P. avium x P. virginiana (L.) characterized by various morphophysiological features have been carried out. By the methods of mathematical statistics, it has
been proved that this formation occurs under the significant influence of the year conditions (A),
host plant characteristics (B) and these factors interaction (AB). The most visible was their highly
significant impact on the number of wintering aphid eggs (A = 200.42; B = 142.6; AB = 25.612).
Plant characteristics such as significantly larger leaf area from the middle part of the shoot on
P. avium x P. virginiana, than on P. avium (t = 8.37; р0.01 = 2.85) was important for attracting
remigrants and the prone buds on P. avium x P. virginiana - for oviposition and survival of eggs.
Correlation between the period of leaf fall and number of aphid eggs on both bird-cherry samples
is presented. The effect of weather conditions on R. padi and primary hosts relationships is
discussed. Correlation (r = 0.76; p = 0.0048) between average temperature of October and eggs
number on P. avium is given. R. fundatrices.
Kirjeldus
Received: August 18th, 2020 ; Accepted: November 12th, 2020 ; Published: January 05th, 2021 ; Correspondence: helenagandrabur@gmail.com
Märksõnad
gynoparae, oviparae, eggs, fundatrices, emigrants, buds, host-plant, defoliation, year conditions, articles