THE AMERICAN COCKROACH. Edited by William J. Bell and K. G. Adiyodi.

THE SOCIAL BIOLOGY OF ANTS. By Klaus Dumpert.
ENERGY METABOLISM IN INSECTS. Edited by Roger G. H. Downer.
CUTICLE TECHNIQUES IN ARTHROPODS. Edited by T. A. Miller     

植物缺硼的生理伤害

硼在作物体内能以3种不同的形式与富羟基化合物络合,文章介绍近10年来有关缺硼引起植物细胸避结构改变,膜透性变化,糖运输受阻,相关酶活性变化,有毒物质积累等一系列生理伤害和机制等方面的研究进展。     

Translocation and Accumulation of Boron in Roots and Shoots of Plants Grown in Soils of Low Boron Concentration in Turkey's Keban Pb-Zn Mining Area

Boron (B) concentrations were investigated in both shoots and roots of Euphorbia macroclada, Verbascum cheiranthifolium, and Astragalus gummifer grown in soil of the Keban, Turkey, Lead–zinc–copper–fluoride mining area, which has an arid climate. Soil B concentrations were also investigated. Plants and their associated soil samples were collected and analyzed by Inductively Coupled Plasma–Mass Spectrometry (ICP-MS). Total B concentrations of soils in the study area were very low (mean: 4.97 mg kg^?1) as compared with those in surface soils in other countries. Boron concentrations of plant organs were several times higher than those in their associated soils. The mean values of B concentrations in roots of E. macroclada, V. cheiranthifolium, and A. gummifer were 25, 70, and 69 mg kg^?1, respectively, while those in shoots were 75, 115, and 77 mg kg^?1, respectively. Results indicate that roots and shoots of plants grown in soils with low B concentrations can be used both as biomonitors for environmental contamination and biogeochemical indicators for B.