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首页> 外文期刊>Indian Journal of Entomology >Residual persistence of the HearNPV against Helicoverpa armigera (Hubner) on tomato as affected by two selected optical brighteners.
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Residual persistence of the HearNPV against Helicoverpa armigera (Hubner) on tomato as affected by two selected optical brighteners.

机译：受到两种选定的荧光增白剂影响的HearNPV对棉铃虫（Hubner）的残留持久性。

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摘要

The relative quantal sunshine protection extended to the Hear NPV (PAU-1 Strain), sprayed at 109 occlusion bodies (OBs)/ml, on tomato cv. Punjab Chhuhara foliage by 2 selected optical brighteners as ultraviolet (UV) protectants (Ranipal and Ujala, each at 1.0%), was assessed against Helicoverpa armigera larvae (1.35+or-0.13 cm) in laboratory bioassays through calculated lethal time (LT50) and original activity remaining (OARs) values following standard techniques. The LT50 of the sunshine exposed yet unprotected virus alone varied between 100.8 and 392 h for the various exposures tested. In contrast, the reduced LT50s of 80.0-286.4 and 92.8-368.8 h at 0-168 h sunshine exposures tested registered for mixing with the virus, Ranipal and Ujala protectants, respectively, indicated the sunshine protective fastness of the former over the latter protectant, for this virus on the tomato foliage. Based on the OARs, the virus in the presence of Ranipal and Ujala persisted with increased levels of 26.67 and 16.67% OAR intact values, respectively, in contrast to 10% OAR intact value observed for the exposed unprotected virus during the same exposure period (168 h). This represented 166.70 and 66.70% increase in field persistence efficacy of this virus against sunshine radiations, respectively, through the use of the Ranipal and Ujala sunshine protectants.
机译：相对定量的日照防护范围扩展到以109个咬合体（OBs）/ ml喷洒在番茄简历上的Hear NPV（PAU-1株）。在实验室生物测定中，通过计算的致死时间（LT50）和2种选定的荧光增白剂作为紫外线（UV）防护剂（Ranipal和Ujala，各自为1.0％），对旁遮普Chhuhara叶子的棉铃虫幼虫（1.35+或-0.13 cm）进行了评估遵循标准技术的原始活动剩余（OAR）值。对于各种测试暴露，单独暴露在阳光下但未受保护的病毒的LT50在100.8至392小时之间变化。相反，在0-168小时的阳光照射下，LT50降低了80.0-286.4和92.8-368.8 h，分别与病毒，Ranipal和Ujala防护剂混合，表明前者的耐日晒牢度高于后者。番茄叶上的这种病毒。基于OAR，该病毒在存在Ranipal和Ujala的情况下持续存在，分别具有26.67％和16.67％的OAR完整值升高水平，而在同一暴露时间段内，暴露的未保护病毒的OAR完整值分别为10％（168） H）。通过使用Ranipal和Ujala阳光防护剂，这分别代表该病毒对抗阳光辐射的野外持久力提高了166.70和66.70％。

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