| 不同处理对红榉种子发芽及苗期生长的影响 |
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| 引用本文： | 王珍珍,刘翠兰,燕丽萍,王因花,王开芳,徐金光.不同处理对红榉种子发芽及苗期生长的影响[J].中国农学通报,2019,35(7):42-47. |
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| 作者姓名： | 王珍珍 刘翠兰 燕丽萍 王因花 王开芳 徐金光 |
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| 作者单位： | 山东省济南市历下区文化东路42号山东省林业科学研究院 |
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| 基金项目： | 山东省重点研发计划项目“红榉等珍稀濒危观赏树种引种驯化及繁育技术研究”(2016GNC110028)；2015 年山东省农业重大应用技术创新 项目“青檀、椴树等珍稀优良树种高效繁育技术研究”（鲁财农指[2015]16 号）；山东省重点研发计划项目“椴树高效繁育及产业化升级关键技术研究” (2017GNC10112)。 |
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| 摘 要： | 为探明不同处理条件下红榉种子的发芽特性及苗期生长规律，提高红榉种子的发芽率，本实验主要进行了以下6种处理：不同浓度赤霉素（GA3）处理20h，浓H2SO4分别处理10min、20min、30min，40℃、60℃、80℃、100℃下分别水浴处理10min、20min、30min，不同种源地、不同基质、层积处理。结果表明，（1）采自常州水泡4天的红榉种子出芽率最高为100％，播种在蛭石中的常州干种子出芽率最高为93.33%。（2）清水浸泡4天后经60℃水浴处理20min的红榉地径最大为14.55mm，GA3浓度为50mg/L时处理的红榉干种子地径最小为6.08mm。（3）采自江苏沭阳经层积处理的红榉种子苗木最高为116.80cm，清水浸泡4天后的红榉种子经60℃水浴30min时苗高最小为70.50cm。红榉种子小、种皮薄，其种皮结构对种子吸水无严重障碍1]，但萌发需要适宜的外部条件的刺激。不同处理对红榉种子的发芽率、苗高、地径、发芽指数及活力指数的影响差异显著，应根据不同的需求进行不同的处理。
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| 收稿时间： | 2017-10-12 |
Effects of Different Treatments on Seed Germination and Seedling Growth of Red Beech |
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| Abstract: | To ascertain the germination characteristics of red beech seed and the growth law at seedling stage under different conditions, and to improve the germination rate of seeds, six treatments were set up in this study, including GA3 soaking, concentrated H2SO4 soaking, water bath with different temperatures, stratification-field temperature-changing stratification, different substrate treatments and the control (CK). The results showed that: (1) the red beech seeds from Changzhou dipped in water had the highest germination rate of 100%, the highest germination rate of dry seeds from Changzhou sown in vermiculite was 93.33%; (2) dipped in water for four days and had water bath of 60℃ for 20 min, the ground diameter of the red beech reached up to 14.55 mm, and the minimum ground diameter was 6.08 mm when the concentration of GA3 was 50 mg/L; (3) with stratification treatment, the highest nursery stock of red beech collected from Shuyang Jiangsu was 116.80 cm, the lowest nursery stock was 70.50 cm when the seeds dipped in water for four days and had a water bath of 60℃ for 30 min. Taken together, different treatments had significantly different effects
on the germination rate, seeding height, ground diameter, germination index and vigor index. Therefore, different treatments should be handled according to different needs. |
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