生長解析法による数種植物におけるクロム耐性の比較
スポンサーリンク
概要
- 論文の詳細を見る
Tolerance of various plants to Cr was studied at the following different Cr6+ concentrations of water cultural solutions: 0.0, 0.5, 2.0, 8.0 mg <I>l</I><SUP>-1</SUP> (w/v). The plants used for the trials were <I>Oryza sativa</I> L., <I>Phaseolus vulgaris</I> L., <I>Morus bombycis</I> Koidz, <I>Brassica oleracea var. captata</I> L., <I>Glycine max</I> (L.) Merr., <I>Brassica campestris</I> L.<I>var. pervirdis</I>. The cultivation was designed for 10 days of operation to measure the dry weight growth (dry increment) of the plants and the concentration change of Cr in plant tissues. Growth analysis has been used to analyze the tolerance of plant toward Cr. The plants were categorized into three types based on their Cr tolerance through the measurement of dry weight growth (dry increment), relative growth rate (RGR), net assimilation rate (NAR) and leaf dry weight ratios (LWR) of the plants before, during and after the cultivation. High tolerance plants were <I>Oryza sativa</I> L. and <I>Phaseolus vulgaris</I> L.; medium tolerance plants were <I>Morus bombycis</I> Koidz. and <I>Brassica oleracea var. captata</I> L.; and the low or poor tolerance plants were <I>Glycine max</I> (L.) Merr. And <I>Brassica campestris</I> L.<I>var. pervirdis</I>.<BR>Increase of Cr concentration added to various plants was linear to the dry weight growth, relative growth rate and net assimilation rate. The Cr concentration of the upper parts of plants above the soil and the Cr transferring rate to those parts dominated the Cr tolerance of a plant. This because the increase of the Cr concentration of the upper parts of plants above the soil and the Cr transferring rate to those parts can inhibit or interfere the physiological functioning a plant, which results in the decrease of organic assimilation capacity or photosynthesis function of the plant, measuring as the decreases of chlorophyll contents, dry weight growth, relative growth rate and net assimilation rate.
- 日本環境毒性学会の論文
日本環境毒性学会 | 論文
- ミジンコ致死試験による農業地帯を流下する河川水の毒性評価
- バイカルアザラシCYP1A1/1A2 cDNAの同定およびダイオキシン類蓄積濃度と各mRNA発現量の関係 (第10回バイオアッセイ研究会・日本環境毒性学会合同発表会奨励賞授賞研究要旨)
- 山梨県内の河川に生息するコイの肝膵臓中メタロチオネイン量
- 環境汚染バイオマーカーとしてのメタロチオネインの有用性 (特集 環境影響評価のバイオマーカー)
- 酸素発生速度に基づく迅速な藻類毒性試験