VA菌根对绿豆(Phaseolus aureus)生长及水分利用的影响

以绿豆作为实验植物,通过含水量不同的三个等级进行砂培,研究了VA菌根对寄主植物的生长和水分利用的影响.实验结果表明,接种VA菌根不仅有利于植物对磷的吸收,促进植物的生长,而且显著提高了水分的利用效率.接种菌根的绿豆制造1克干物质所需的水分大约是未接种的对照植株所需水分的一半,大大提高了水分的利用率.

EFFECTS OF VESICULAR-ARBUSCULAR MYCORRHIZA ON THE GROWTH OF PHASEOLUS AUREUS AND ITS WATER USE

Mungbean as experimental plant was investigaed by means of sand culture containing three levels of water to determine the influence of VA mycorrhiza on the host plant growth and its water use.The experimental results showed that inoculatlag with VA mycorrhiza was beneficial not only to uptake of phoephorw by plant,but sisa to promoting plant growth.amount of water used by mungbean inoculated with mycorrhiza to produce one gram of dry matter was as low as half of that by controlled plant.It was implied that the efficiency of water used by the host plant inoculated with mycorrhiza was increased by 100%.In this paper,the growth and development of mycorrhizal and non-mycorrhizal plants in three different water levels of sand culture were described.The water consumed by plant growth in the whole growing period was measured and the experimental results were analysed and discussed.