Herlinda, Siti and Pujiastuti, Yulia and Pelawi, J. and Riyanta, Anung and Nurnawati, Elisa and Suwandi, Suwandi (2005) PATOGENISITAS ISOLAT-ISOLAT Beauveria bassiana (BALS.) VUILL. TERHADAP LARVA Plutella xylostella (L.) (LEPIDOPTERA: PLUTELLIDAE) DI RUMAH KACA. Inovasi, 2 (2). pp. 85-92.
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Abstract
The objective of this green house experiment was to determine the most virulent among 10 B. bassiana isolates against P. xylostella larvae. The tested isolates were originally obtained from several insects, i.e. Nilaparvata lugens, Plutella xylostella, Chrysodeixis chalcites, Hypothenemus hampei, Conopomorpha cramerella, Thrips tabaci. Conidia from slant culture of GYA added chitin from small mole criket diluted to get 101, 103, 105, and 107 conidia per ml. The third instar of P. xylostella were put on mustard leaves and then B. bassiana isolates were inoculated by spraying them on the leaves. This bioassay was carried out to determine median lethal time (LT50) of the isolates, and mortalities of larvae and pupae. Three lowest LT50 at 1 x 107 conidia per ml of C. chalcites (KBC), C. cramerella (S100), and C. chalcites (PD2) isolates were 17.1, 20.6, and 27.4 hours, respectively. At 1 x 1 x 107 conidia per ml, all isolates were able to kill more than 60% larval stages after 48 hour application.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Beauveria bassiana, Plutella xylostella, green house |
| Subjects: | S Agriculture > SB Plant culture > SB1-1110 Plant culture |
| Divisions: | 05-Faculty of Agriculture > 54295-Plant Protection (S1) |
| Depositing User: | Dr. Suwandi Suwandi |
| Date Deposited: | 12 Sep 2019 09:34 |
| Last Modified: | 12 Sep 2019 09:34 |
| URI: | http://repository.unsri.ac.id/id/eprint/7263 |
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