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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (10): 122-126.doi: 10.11924/j.issn.1000-6850.casb2024-0445

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Effects of Rubber Tree Varieties on Development and Reproduction of Parasaissetia nigra

ZHANG Fangping1(), ZHU Junhong2, YE Zhengpei1, CHEN Junyu1, ZHENG Lijiu1, SHI Xia1   

  1. 1 Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences/ Key Laboratory of Integrated Pest Management for Tropical Crops, Ministry of Agriculture and Rural Affairs/ Hainan Provincial Engineering Research Center for the Breeding and Industrialization of Natural Enemies/ Hainan Provincial Key Laboratory for Monitoring and Control of Harmful Organisms in Tropical Agriculture, Haikou 571101
    2 College of Plant Protection, Hainan University, Haikou 570228
  • Received:2024-07-09 Revised:2025-02-24 Online:2025-04-05 Published:2025-04-03

Abstract:

To clarify the effects of rubber varieties on the development and reproduction of Parasaissetia nigra, the developmental duration, survival rate, and fecundity of P. nigra were investigated on seven rubber tree varieties (‘IAN873’, ‘Reyan 7-33-97’, ‘PR107’, ‘Reyan 7-20-59’, ‘Yunyan 77-4’, ‘GT1’ and ‘RRIM600’) in a cage experiment under field condition. Additionally, population life tables of P. nigra on these rubber tree varieties were constructed, respectively. The results showed that developmental duration of P. nigra was the longest on ‘RRIM600’ (99.1 d) and the shortest on ‘PR107’ (74.3 d). Notable mortalities of first-instar nymphs were found in all seven rubber tree varieties, with the survival rates ranging from 27.9% to 59.0%. For a whole generation of P. nigra, the survival rates on seven rubber tree varieties in decreasing order were ‘PR107’> ‘Yunyan 77-4’> ‘Reyan 7-33-97’> ‘Reyan 7-20-59’> ‘IAN873’> ‘RRIM600’> ‘GT1’. The longest oviposition period (64.4 d) and adult longevity (94.4 d) of P. nigra were observed on rubber tree variety ‘Reyan 7-33-97’. The highest fecundity was recorded also on ‘Reyan 7-33-97’ (727.0 eggs), followed by ‘PR107’ (526.2 eggs), whereas the lowest fecundity was found on ‘RRIM600’ (303.5 eggs). The population trend index of P. nigra on seven rubber tree varieties in decreasing order were ‘PR107’> ‘Reyan 7-33-97’> ‘Yunyan 77-4’> ‘GT1’> ‘Reyan 7-20-59’> ‘IAN873’> ‘RRIM600’. Therefore, ‘PR107’ and ‘Reyan 7-33-97’ were identified as the suitable hosts for P. nigra, whereas ‘GT1’ and ‘RRIM600’ were considered as unsuitable hosts.

Key words: Parasaissetia nigra, rubber tree, variety, life table, development, survival rate, reproduction