表油菜素内酯对月季切花保鲜作用的研究

FRESH-KEEPING EFFECT OF EPIBRASSINOLIDE ON ROSE CUT FLOWERS

摘要:

本文初步探讨了表油菜素内酯（epiBR）对瓶插月季切花的保鲜作用。与对照（蒸馏水）和基本液（2％蔗糖＋500mgL-1柠檬酸＋250mgL-8-羟基喹啉＋25mgAgNO3）相比，经epiBR处理（基本液＋0．1mgL-1epiBR）的月季切花花枝坚挺，蓝变延迟，瓶插寿命延长1-1.5倍。测定有关生理指标表明，epiBR处理对月季切花瓶插花枝前期鲜重的增加及后期的保持有明显作用。并显著延缓花瓣和叶片质膜相对透性的增加，还能使瓶插前期花瓣还原糖含量增加。epiBR处理对花瓣蛋白质和叶片叶绿素含量变化无明显影响，而对花瓣花青素水平下降有轻微的促进作用。

Abstract:

The cut flowers of Chinese rose (Rosa chinensis Jacq. cv. shenzhenhong) treatedwith epibrassinolide(epiBR, basic preservative+0.1 mg L-1 epiBR) prolonged the flower lifein vase by 1- 1.5 times, and markedly improved the quality of cut flowers as compared tothe control (distilled water) or basic preservative only (2% sucrose +500 mg L-1citric acid+250 mg L-1 8-hydroxyquinoline +25 mg L-1 AgNO3). Further studies showed that epiBRcould increase the fresh weight of cut flowers and promoted the increase of reduc...