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Wyszukujesz frazę "Kheradmand, K." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Effect of different constant temperatures on biology of Schizaphis graminum (rondani) (Hemiptera: aphididae) on barley, Hordeum vulgare L. (poaceae) in Iran
Autorzy:
Tofangsazi, N.
Kheradmand, K.
Shahrokhi, S.
Talebi, A.A.
Powiązania:
https://bibliotekanauki.pl/articles/65026.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The temperature dependent biology of greenbug, Schizaphis graminum Rondani on Kavir barley cultivar was studied at seven constant temperatures including 10, 15, 19, 22, 26, 31, and 33±1°C, 70% relative humidity (RH), and a photoperiod of 16:8 (L:D) hours. The period of immature development ranged between 6.60 days at 26°C to 28.56 days at 10°C, respectively. All tested aphids failed to develop at 33°C. The calculated rm and λ values were significantly the highest at 26°C and lowest at 10°C, respectively. The mean generation time and doubling time of S. graminum decreased linearly by increasing the temperature from 10 to 26°C. Additionally, the total number of offsprings per female was extremely low at 10 and 31°C, contrary to the highest and lowest values of life expectancy at 10°C (41.73 days) and 31°C (7.66 days), respectively. The results of the present study revealed that temperature had great effects on biology of S. graminum, which was never previously studied on barley in Iran.
Źródło:
Journal of Plant Protection Research; 2012, 52, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of nitrogen fertilization on biology of Aphis gossypii (Hemiptera: Aphididae) reared on Chrysanthemum indicum (Asteraceae)
Autorzy:
Rostami, M.
Zamani, A.A.
Goldasteh, S.
Shoushtari, R.V.
Kheradmand, K.
Powiązania:
https://bibliotekanauki.pl/articles/66888.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The experiment studied the effect of different nitrogen levels on the biology and life table parameters of the cotton aphid, Aphis gossypii Glover reared on Chrysanthemum indicum Kitan. The fertilizer treatments were administered at 0, 25, 50, 100 and 150% of the agronomic recommended concentration. The aphids were collected from greenhouses in Mahalat and transported to pots. The different nitrogen fertilizer levels did not show a specific effect on the potassium and phosphorus content in leaves. The intrinsic rate of increase and net reproductive rate ranged from 0.173 to 0.225, and 15.47 to 28.28, respectively, at different tested fertilizer levels. The aphids showed the significantly lowest mean generation time and the highest finite rate of increase when fed on chrysanthemum fertilized at a 150% fertilizer level. The aphids fecundity and survival showed a positive correlation when the fertilizer concentration was increased. On the other hand, the highest life expectancy was obtained for the aphids fed on chrysanthemum with a 25% nitrogen level. The present data suggest that plant nitrogen content is an important factor contributing to the increase severity of the cotton aphid as a pest of chrysanthemum.
Źródło:
Journal of Plant Protection Research; 2012, 52, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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