Allelopathic Effects of Root Exudates from Corn and Soybean on Tuber Germination and Bud Growth of Potato
LI Cui-ping
Abstract：In order to study the biochemical relationships between intercropped crops (corn, soybean and potato),this test investigated allelopathic effects of corn,soybean root exudates on potato tuber germination and bud growth.The results showed that root exudates from corn and soybean were all able to promote tuber germination and bud growth of potato,but different types of root exudates and their different concentrations had different allelopathic effects.High concentrations (100%)of root exudates from corn promoted significantly potato tuber germination, increased tuber germination potential,whereas low concentrations(25%)inhibited germination. Soybean root exudates whether at high concentration or low concentration had a significant promoting effect on tuber germination rate and germination potential of potato.The root exudates from corn and soybean increased significantly the vigor index,with high concentration(100%)of root exudates from corn having the biggest increase.The root exudates from corn increased significantly bud fresh (dry)weight and bud length of potato,among which high concentration showed the strongest growth promotion effect,and a similar trend was observed among the root exudates from soybean.The two types of root exudates significantly increased amylase vigor in potato tuber.High concentration of corn root exudates showed the strongest promotion effect, followed by the 100% concentration of soybean root exudates.Thus,corn and soybean are the fine front stubble crops of rotational potato,and they can also be intercropped with potato.
Keywords：cornsoybeanroot exudatespotatotuber germinationbud growth
Publication Date：2014-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 31-34 )