首页|TRANSGENIC BT COTTON EFFECTS LARVAL DURATION, PUPATION AND ADULT EMERGENCE OF SPODOPTERA LITURA (FABRICIUS)
TRANSGENIC BT COTTON EFFECTS LARVAL DURATION, PUPATION AND ADULT EMERGENCE OF SPODOPTERA LITURA (FABRICIUS)
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NSTL
Studies on the 3rd instar larvae of Spodoptera litura regarding pupation, pupal survival, adult emergence and estimation of Cry toxin were undertaken on 150 and 165 days old plants of six cotton cultivars i.e. Yuvraj and JKCH 1050 (BG I), NCS 855, Ankur 3028 and MRC 7017 (BG II) and non Bt cultivar, LH 2076.Estimation of CrylAc was done from the leaves of above mentioned BG I and BG II cultivars with ELISA kit of ENVIROLOGIX 500.The results revealed significantly longer larval and pupal period (days), lower pupation (%), pupal weight (mg), pupal survival (%) and adult emergence (%) of S. litura on BG II hybrids as compared to BG I and non Bt cultivars. Among different plant stages, significantly longer larval and pupal period, lower pupal weight, pupation, pupal survival and adult emergence was recorded on 150 day old plants as compared to 165 days old plants. The expression of Cry toxin (CrylAc and Cry2Ab) was also higher among BG II cultivars as compared to BG I and also higher toxin was presentin younger plants of 150 days as compared to 165 days old plants.
NSTL
