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OALib Journal期刊
ISSN: 2333-9721
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花椒叶浸提液对大豆种子萌发和幼苗生长的化感作用
DOI: 10.3724/SP.J.1145.2011.00585, PP. 585-588
Keywords: 花椒,化感作用,种子萌发,幼苗生长,大豆
Abstract:
研究了不同浓度的花椒叶浸提液（5、10、20、40、80gl-1）对3个大豆品种种子萌发、幼苗生长的化感作用.结果表明：花椒对大豆化感效应的总体趋势为浸提液浓度越高，对大豆生长的抑制作用越强；高于40gl-1的浓度处理，主要形态和生化指标都表明大豆生长受到显著抑制或破坏；在小于20gl-1的浓度范围内，化感作用能够提高低活力种子的萌发率，但降低了种子发芽指数和发芽速度，且化感作用受受体品种差异和自身种子活力的影响而表现不一致；随着化感物质浓度增高，sod酶活显著降低，丙二醛（mda）含量持续增高.大豆幼苗各器官或组织受花椒化感作用的影响大小依次为根生物量＞地上部生物量＞株高＞根长.图2表3参12
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