Effects of various dormancy breaking treatment on seed germination in Sclerorhachis leptoclada boiss: an endangered medicinal plant in arid area

4区农林科学 Q3 Agricultural and Biological Sciences

Genetika-Belgrade Pub Date : 2022-01-01 DOI:10.2298/gensr2202601m

Maliheh Mahmoudi, M. Seghatoleslami, G. Moosavi, M. Teimouri

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引用次数: 1

Abstract

The aim of this study was to investigate the effect of pre-sowing treatments and temperature on Sclerorhachis leptoclada Boiss. seed germination. The following treatments were used), hot water (soaking in water at 70?C and 90?C for 5 second), Moist Chilling (Soaking in water at 2?C for 7,14 and 21day with the temperature gradually falling to room temperature), scarification by 0.2% potassium nitrate (soaking for 24 h and 48 h) and Gibberellic acid (GA: at concentrations of 250, 500 and 750 ppm soaking for 24 h and 48 h) and Distilled Water (control). The percentage of germination, germination rate, germination start (GS), mean germination time (MGT), and germination vigor index were determined as germination indices. Root and shoot length, root fresh weight, root dry weight, shoot fresh weight, shoot dry weight and seedling dry weight were evaluated as growth factors at the end of the incubation period. Second experiment was carried out to study the effect of temperature on seed germination. It was observed that both the physical and chemical scarification methods were effective in enhancing S. leptoclada seed germination and growth. The highest germination rate, percentage of germination and germination vigor index was observed with Moist Chilling (Soaking in water at 2?C for 14 day), 0.2% potassium nitrate (soaking for 48h) and GA (at concentration of 250 ppm soaking for 48h) in compare with control. Also the highest growth factors were found in Moist Chilling (Soaking in water at 2?C for 7day) treated seeds and the lowest occurred in hot water treatments. The other results showed that higher temperature was more effective lower temperature for seed germination.

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不同破休眠处理对干旱区濒危药用植物细尾藤种子萌发的影响

本研究旨在探讨播前处理和温度对细爪硬盘蛾(sclorhachs leptoclada Boiss)的影响。种子发芽。使用以下处理)，热水(浸泡在70?C和90?温度5秒)，湿冷却(浸泡在水中2?用0.2%硝酸钾(浸泡24 h和48 h)、赤霉素(GA:浓度分别为250、500和750 ppm，浸泡24 h和48 h)和蒸馏水(对照)进行刻蚀。以发芽率、发芽率、发芽起始率(GS)、平均发芽时间(MGT)和发芽活力指数为发芽指标。在培养结束时，以根长、茎长、根鲜重、根干重、茎鲜重、茎干重和幼苗干重为生长因子进行评价。第二次试验研究了温度对种子萌发的影响。结果表明，物理和化学刻蚀法均能有效促进纤毛虫种子的萌发和生长。2℃湿冷浸水处理的发芽率、发芽率和萌发活力指数最高。C浸泡14 d)， 0.2%硝酸钾(浸泡48h)和GA (250 ppm浸泡48h)与对照相比。在2℃湿冷(浸泡)条件下生长因子最高。C处理7d)，热水处理最低。其他结果表明，较高的温度较低的温度对种子萌发更有效。

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来源期刊

Genetika-Belgrade AGRONOMY-GENETICS & HEREDITY

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The GENETIKA is dedicated to genetic studies of all organisms including genetics of microorganisms, plant genetics, animal genetics, human genetics, molecular genetics, genomics, functional genomics, plant and animal breeding, population and evolutionary genetics, mutagenesis and genotoxicology and biotechnology.