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首页> 外文期刊>Journal of Experimental Zoology India >AGE-SPECIFIC SURVIVORSHIP, LIFE-FERTILITY TABLE STUDIES OF SPODOPTERA LITURA (FABRICIUS) ON BT-I AND BT-H COTTON HYBRIDSUNDER LABORATORY CONDITIONS
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AGE-SPECIFIC SURVIVORSHIP, LIFE-FERTILITY TABLE STUDIES OF SPODOPTERA LITURA (FABRICIUS) ON BT-I AND BT-H COTTON HYBRIDSUNDER LABORATORY CONDITIONS

机译：年龄特异性生存，Spodoptera Litura（Fabricius）的生命生育率表研究在BT-1和BT-H棉杂交地区实验室条件下

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摘要

To study the response of Spodoptera titura, on Bt cotton hybrids, constructed life tables in controlled conditions (24±1°C, 70±5% R.H.), The age specific life-table of S. litura on Bt-! I hybrids showed maximum mortality compared to larvae fed on Bt-I hybrids. The life parameter of the S.liaira was negatively affected by Bt-II hybrids. Net reproductive rate (R_o) on Bt-II hybrids recorded was least i.e., 31.04 to 81.84, compared to Bt-I hybrids. Mean generation time was higher on Bt-II hybrids 57.86 days in RCH-2 Bt-II and lowest was recorded on Bt-I hybrids. Lowest intrinsic rate of increase (r_m) was recorded in Bt-II hybrids and highest (r_m) on Bt-I hybrids. Insect could double its numbers around 6 days in Bt-I and around 8 days in Bt-II hybrids. Lowest weekly multiplication rate (VVMR) of 1.51 times was recorded in RCH-134 Bt-II. The Stable age distribution revealed that 90 per cent of immature stages contributed for crop damage. The life expectancy revealed that the expected days of larvaefed Bt-II hybrids was decreased during early days compared to Bt-I fed larvae. Among the 12 hybrids tested, the negative effect of Cry toxins on the pest was highest in RCH-134 Bt-II. The Bt-II hybrids demonstrated significantly negative effect on 51 litura during early stages of crop, i.e. during 60-90 DAS of crop, as the crop matured the Cry toxin content decreased.
机译：为研究Spodoptera Tinura的响应，在BT棉杂种上，在受控条件下构建的寿命表（24±1°C，70±5％R.），BT-Litura的年龄特异性生命表！与在BT-I杂交种喂养的幼虫相比，I杂种显示出最大的死亡率。 S.Liaira的生命参数受到BT-II杂种的负面影响。与BT-I杂交种相比，BT-II杂交种的净生殖率（R_O）记录的BT-II杂交种是最少的，即31.04至81.84。在RCH-2 BT-II中的BT-II杂种57.86天内，平均一代时间较高，并在BT-I杂交物上记录最低。在BT-II杂种和最高（R_M）上记录最低内在的增加率（R_M），并在BT-I杂交种上记录最高（R_M）。昆虫在BT-II杂交种中的BT-I和8天大约8天内将其数量加倍。在RCH-134 BT-II中记录了1.51次的最低每周倍增率（VVMR）。稳定的年龄分布显示，90％的未成熟阶段促成了作物损害。预期寿命透露，与BT-I喂养幼虫相比，幼虫BT-II杂交种的预期日期下降。在测试的12个杂种中，RCH-134 BT-II中鼠标毒素对害虫的负面影响最高。 BT-II杂交种在作物早期51次Litura显着负面影响，即在作物的60-90 das期间，随着作物成熟的毒毒素含量下降。

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