Effect of different seed treatments on dormancy breaking and germination in three species in arid and semi-arid lands

查看全文 作　　者：Seyed Mohammad Hosseini [1]NASR;Sekineh Kiani [2]SAVADKOOHI;Elahe [1]AHMADI

机构地区：[1]Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University,Sari 578, Iran;[2]Faculty of Natural Resources, Mazandaran University,Sari 578, Iran

出　　处：《Forestry Studies in China》索引2013年第15卷第2期,共7页

摘　　要：Seeds of many woody plant species have one of several types of dormancy. They do not germinate unless specific environmental signals are in place or events occur. This study was conducted to evaluate the effects of scarification treatments on seed dormancy and germination of Acacia nilotica (L.) Willd. ex Del., Prosopis juliflora (Sw.) DC. and Dodonaea viscosa (L.) Jacq. The following treatments were applied: T1, untreated seed (control); T2, sulphuric acid (97%) for 45 min; T3, boiling water for 5 min. The seeds were cultured on a Murashige and Skoog (MS) medium after sterilization. The responses of seeds to treatments were compared with each other and with the control treatment. Germination was observed daily for a 30-day period. Results indicated positive responses to treatments, while impermeable seed coats may be responsible for low germination rates in intact seeds as seen experimentally in the untreated control. The highest germination was obtained for P. juliflora and D. viscosa acid-scarified seeds (80.8%-90.8%) and for scarified seeds of A. nilotica (50.2%) boiled in water. The germination indices, i.e., final germination percentage (FG), mean daily germination (MDG) and germination rate (GR), were significantly affected by treatments and species (p<0.01). 关键词：种子处理打破休眠萌发率半干旱种子发芽率土地品种植物物种

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Effect of different seed treatments on dormancy breaking and germination in three species in arid and semi-arid lands

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