几种野生草本植物含油量和抗旱性初探

为获得高产油量、抗逆性强、速生的草本能源植物,测定了几种野生草本能源植物的含油量和抗旱生理指标(细胞质膜透性、自由水与束缚水比值)。结果显示:地锦草(15.01%)与野生蓖麻(13.90%)的含油量最高,但二者间植株含油量的差异不显著;其次是大地锦(11.02%)与萝藦(8.27%)。另外,萝藦(58.05%)与大地锦(57.02%)叶片的细胞质膜透性最高,其次是野生蓖麻(18.23%)。大地锦自由水与束缚水比值较高,为1.489;萝藦(1.270)与野生蓖麻(1.244)的差异不大。可以认为,野生蓖麻的植株和种子中含油量都较高,抗旱性强,是一种有希望的野生能源植物。

Study on Oil Content and Drought-resistance of Several Wild Herbal Plants

In order to gain the wild energy herbs of high oil content,strong resistance and fast growth in the north droughty region of China,the field and laboratory experiments were conducted to measure the oil content and the two biological drought-resistance indexes: the membrane permeability and the ratio of free water to restricted water.The data show that the highest oil content of the leaves were taken from Euphorbia Humifusa(15.01%) and Ricinus communis(13.90%),and the difference was not significant between them,while the oil content of the leaves were lower in Nodding Euphorbia(11.02%) and Metaplexis japonica(8.27%).Furthermore,the membrane permeability of the leaves of Nodding Euphorbia(57.02%) and Metaplexis japonica(58.05%) was the highest,higher than that of Ricinus communis(18.23%).And then,it is found that the ratios of free water to restricted water were different in Nodding Euphorbia(1.489),Ricinus communis(1.244) and Metaplexis japonica(1.270).The results suggest that in the north drought region of China,there was much high potential of Ricinus communis as an energy plant.