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《山西林业科技》2016,(4)
分别采用层积沙藏(2个月)、温水浸泡(40℃,50℃,60℃)、超声波(40 k Hz,50 k Hz,60 k Hz)、赤霉素(100 mg/L,200 mg/L,300 mg/L)浸泡4种不同的方法对暴马丁香种子进行预处理,研究了不同处理对暴马丁香种子萌发、育苗的影响以及不同处理的协同效应,以期筛选出能够快速打破休眠、促进种子萌发的方法。结果表明:不同处理均提高了暴马丁香种子的萌发率及育苗效果。4种不同方法的处理效果依次为:层积沙藏100 mg/L赤霉素浸泡50 k Hz超声波50℃温水浸泡。用50 k Hz超声波和100 mg/L赤霉素进行协同处理,暴马丁香种子发芽率高达92.36%,出苗率达90.13%,平均发芽天数比对照减少了3.71 d.该方法操作简单,成本低廉,具有实际生产意义。 相似文献
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分别用30、60、75和95℃的热水及用浓硫酸处理山皂荚种子的结果表明,30℃热水处理2min与5min的种子差异不显著,处理10min的种子与前两组差异显著。60℃热水处理的3组时间间的差异显著,75℃的热水处理的3组时间间的差异显著,95℃处理2min与5min的种子差异显著,处理2min与10min的种子差异显著,处理5rnin与10min的种子差异不显著。用75℃热水处理种子10min对山皂荚的种子萌发最为有利,浓硫酸处理60rain的山皂荚种子较热水处理山皂荚种子吸水性能大。 相似文献
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鄂西红豆古树、初果树种子不同水温处理发芽对比试验 总被引:1,自引:0,他引:1
以鄂西红豆古树和初果树种子为材料,采用不同温度热水分别对两批种子进行浸种处理,再在圃地上进行播种发芽试验。结果表明:古树批种子发芽率高低的顺序为始温90℃热水浸种24h始温80℃热水浸种24h始温70℃热水浸种24h始温60℃热水浸种24h;初果树批种子发芽率高低的顺序为始温80℃热水浸种24h始温70℃热水浸种24h始温90℃热水浸种24h始温60℃热水浸种24h。古树批种子用始温90℃热水浸种24h处理方法发芽率最高,达84%;初果树批种子用始温80℃热水浸种24h处理方法发芽率最高,达85%。相同方法处理的种子(除始温90℃热水浸种24h外),初果树批种子比古树批种子的发芽率高。用90℃高温热水浸种处理,会造成初果树种子烫伤,严重影响发芽率,而古树种子不受影响。 相似文献
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采取毛竹种子不同方式浸种育苗技术试验。种子选择12年生以上优质母树采种之后其一用50℃温水消毒浸种,其二用1∶1000的多菌灵溶液消毒30min后、再用温水浸种24min,其三用吲哚丁酸500PPM溶液浸种12h即可播种。各试验播种量2kg,播种面积各0.067hm2,用吲哚丁酸500PPM溶液浸种的种子发芽率,比用清水消毒浸种的种子和用多菌灵溶液消毒后温水浸种的种子发芽率分别提高25.40%、16.18%,苗木萌芽出土率也分别提高21.52%、12.94%;苗木生长量苗高分别提高30.77%、17.24%,苗径分别粗24.00%、16.98%,出笋率分别提高55.56%、40.00%,苗竹冠分别增宽大33.85%、19.18%。 相似文献
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在吉林省柳河县进行酸枣种子育苗及引种栽培试验,结果表明:酸枣种子本身不存在休眠现象,坚硬的内果皮是限制种子萌发的主要因素;酸枣有性繁殖时,需将种实进行低温沙藏90~120 d,发芽出土整齐,发芽率高达91% ~95%.酸枣1年生播种苗需要埋土防寒越冬,2年生留床苗不需任何防寒措施就能安全越冬,2年生留床苗平均苗高80.6 cm,平均地径0.94 cm,保持了原有的优良形状;适应性强,抗旱、耐寒、抗病虫害能力强. 相似文献
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Understanding the germination traits of plants is important not only for understanding natural regeneration processes but
also for developing seedling production techniques for planting. Sabina vulgaris Ant. is a common species used for reforestation in semi-arid areas of the Mu-Us Desert, in Inner Mongolia, China, but its
extremely low germination rate, both in situ and in vivo, is a bottleneck for seedling production. Sulfuric acid pretreatment
was applied to improve germination, and the germination rate was compared for different soaking time (10, 30, 60, 90, and
120 min), different temperatures (10, 15, 20, 30, and 35°C) and under different lighting conditions (dark and light). Sulfuric
acid treatment gave a high germination rate, reaching 60% at 30 days after sowing. However, the non-treated seeds produced
no germination. The optimal treatment time in sulfuric acid was 120 min. Germination after sulfuric acid treatment increased
at incubation temperatures from 10 to 30°C, but decreased at 35°C. Incubation at 25–30°C gave maximum germination of more
than 50%. Light treatment had little effect on germination. Pretreatment with sulfuric acid improved water absorption by the
embryo by creating cracks and cavities in the seed coat tissue. These results indicated that S. vulgaris seeds have physical dormancy caused by their hard seed coats, which prevents absorption of water into the embryo. A combination
of pretreatment with sulfuric acid and incubation at 25–30°C was most effective in improving the germination of S. vulgaris seeds. 相似文献
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通过不同试验材料、GA3应用和变温层积催芽对比试验,对刺楸种子解除休眠进行研究的结果表明:鲜种+GA3+(15℃,30 d;冷冻,90 d;-4~0℃,90 d)处理方法发芽率达到90.2%,出苗率达到81.5%;气干种温水(72 h)+GA3+(13~18℃,90 d;0~4℃,90 d)处理方法发芽率达到76.3%,出苗率达到66.4%。采用鲜种进行变温催芽处理对刺楸种子发芽率、出苗率和1年生苗木质量提高具有显著作用(p<0.01和p<0.05)。研究表明,刺楸种子属于形态-生理休眠类型,采用鲜种+GA3+变温层积催芽的综合处理方法能有效解除刺楸种子休眠。 相似文献
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Mooseer(Allium hirtifolium Boiss.) is bulbous perennial herb widely used in pharmaceutical and food industry in Iran.We studied germination of mooseer seeds in two separate experiments.In the first experiment,we evaluated four treatments:sulfuric acid scarification,sandpaper scarification,cold stratification,and gibberellic acid(GA 3) application.In the second experiment,we evaluated combinations of these treatments.All treatments in the first experiment had no effect on seed germination,suggesting that mooseer seeds have physical and physiological dormancy.In the second experiment,the highest germination percentage(86.6%) was observed after five minutes scarification with sulfuric acid(75% v/v),followed by 60 days of cold stratification.Duration of sulfuric acid scarification(5,10,and 20 min) did not affect germination rates,but increasing duration of cold stratification(from 15 to 60 days),increased germination from 28.3% to 86.6%.Our study showed that mooseer seeds have both physical and physiological dormancy. 相似文献
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由于楠木种质资源有限,如何充分利用现有的种质资源进行珍稀树种扩繁,是本次试验的主要目的。在恒温条件下(24℃),利用不同浓度的赤霉素溶液处理经过不同层积天数的楠木种子,然后进行发芽试验。结果表明:900 mg/L的赤霉素溶液浸泡层积时间为50 d的种子,其发芽率最高达到92%,与对照相比差异很大,因此适宜的楠木种子处理方法可以显著提高其发芽率。 相似文献