Effects of methidathion resistance obtaining on developmental duration and reproductive capacity of the predacious mite Amblyseius womersleyi Schicha (Acari:Phytoseiidae);

Under constant temperature and humidity conditions,fecundity,developmental duration and survival rate were compared between Trichogramma dendrolimi infected and uninfected with Wolbachia using the staining method by Safranin in egg of Antheraea pernyi.

The female developmental duration of Tianjin population was significantly greater than other populations,and there were not .

The results showed that the developmental stage of floral receptacle affected the differentiation of callus,and the best effect was floral receptacle of inflorescence which diameter was below 0.

The anatomical structure of the ovules at different developmental stages of Pinus tabulaeformis in Beijing was observed by microscopy to determina the ovule development of P.

The hyperspectral reflectances of the canopy, the first and the third unfolding leaf from the top and panicles of two rice varieties were measured by a ASD FieldSpec Pro FR TM in field and indoor under three nitrogen levels at different developmental stages.

Methods Male wistar rats of development stage (3W-13W) exercised treadmill for 3 weeks ( Group T3W), 6 weeks(Group T6W)and 9 weeks(Group T9W )respeceively,for 1h/day at velocity up to 15m/min , degree+5, 5 days/week.

[Objective] To study the effects of long-term deficiency of selenium ( Se ) and iodine (Ⅰ) on the activities of glutathione peroxidase ( GSH-Px ) in rats at embryo development stage.

This study was performed to determine the effects of dietary supplementation of fish oil rich in DHA during development of rats on the learning and memory ability of the young rats.

Part I Establishment of the developmental animal model of low-level lead exposureObjectiveUsing atomic absorption spectrophotometry to detect retinal and blood lead level of the normal and lead-exposed rats at different ages.