Fitness of the Small Brown Planthopper （Laodelphax striatellus） on Different Plants
QIAO Hui 1,2， LIU Fang 2， LUO Ju 1， LAI Fengxiang 1， FU Qiang 1,*， WANG Hua di 3, DAI De jiang 3
1 China National Rice Research Institute， Hangzhou 310006， China； 2 College of Horticulture and Plant Protection, Yangzhou University， Yangzhou 225009， China； 3 Bureau of Plant Protection and Quarantine， Hangzhou 310020， China； *Corresponding author， E-mail： email@example.com
The development and reproduction of the small brown planthopper (SBPH) on 57 plants including Oryza sativa, Zea mays, Sorghum vulgare and Echinochloa crusgalli were studied by the caging method in laboratory. The results indicated that nymphal development duration, emergence rate, adult weight, adult longevity and fecundity of SBPH on different plants were significantly different. According to principal component analysis and population trend index analysis, five plants (Echinochloa crusgalli etc.) were the most suitable host plants, with the emergence rates of SBPH on these plants ranging from 59.4% to 86.9%, and the population trend indexes above 27.8. Nine plants (Lolium perenne etc.) were also suitable for the small brown planthopper, 27.0%-64.5% individuals could emerge on those plants with the population trend indexes above 10. Five plants such as Eleusine indica were scarcely suitable for the survival of SBPH, with 13.0%-35.6% emergence rate, and 1-10 population trend index. Thirteen plants (Bromus inermi etc.) were unfit for SBPH’s survival, less than 10% individuals could emerge on them, with the population trend indexes below 1. Nymphs of SBPH on other twentyfive plants such as Zea mays could not emerge. Lolium maloiforam, Beckmannia syzigachne, Polypogon fugax, Poa acroleuca, Avena fatua and Capsella bursapastoris were the newlyconfirmed host plants.