茄子秸秆水提物自毒作用初探

Study on autotoxic effects of aqueous extracts from eggplant residues.

试验研究茄子秸秆水提物自毒作用结果表明,茄子干秸秆水提物原液浓度为0 .0 15 g/ mL时明显抑制茄时明显抑制茄子胚根的生长,低浓度提取物原液对胚芽生长有一定促进作用,当其浓度增至0 .0 75g/ mL时明显抑制茄时茄子胚芽生长也受抑,表明茄子秸秆水提物对茄子生长有较强的自毒作用;水提物中醇溶性组分对茄子胚根、胚芽生长的影响与水提物原液表现一致,且对水培茄子幼苗生长有较强抑制作用,表明醇溶性组分中含有大量自毒物质。茄子幼苗根系活力随水提物中醇溶性组分浓度的增加而降低,植株对NO-3 、PO3 -4、K+ 、Mg2 + 和Ca2 + 等离子的吸收受阻,因而抑制离子的吸收是水提物中自毒物质发挥作用的重要因素之一。

Autotoxic effects of aqueous extracts from eggplant residues were studied. The results show that the aqueous extracts inhibit obviously its radicle growth at the concentration of 0.015g/mL. Although the embryo growth is simulated at low levels,the inhibitory effect is observed as the concentration reaches 0.075g/mL, indicating that the aqueous extracts have strong autotoxic effects on eggplant. Moreover, methanol isolatable components in aqueous extracts inhibit the growth of embryo, radicle and seedling, indicating that the methanol?dissolved components contain some autotoxic substances.The root vigor of eggplant seedling declines as the concentration of the methanol isolatable components increase. Autotoxic substances in the methanol isolatable fraction depress the uptake of NO - 3, PO 3- 4, K +, Mg 2+ and Ca 2+ , indicating that the inhibition on ion uptake is an important aspect of autotoxic effects.