盐胁迫对亚麻荠种子萌发及幼苗早期生长的影响。

IF 0.3 Q4 MULTIDISCIPLINARY SCIENCES Momona Ethiopian Journal of Science Pub Date : 2020-04-30 DOI:10.4314/MEJS.V12I1.1
G. Yohannes, Leul Kidane, B. Abraha, Tadesse Beyene
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引用次数: 4

摘要

Camelina sativa是一种很有前途的低投入、高产生物柴油作物,适合在边缘土地上种植,是ω-3脂肪酸的良好来源。但是,盐分是农业的一个整体问题,由于渗透性和离子毒性的质量影响,它限制了植物的发芽、发育和生产力。本研究的目的是评估盐度(NaCl和KCl)对Camelina sativa发芽和幼苗早期生长的影响。Camelina sativa种子是从瓦切莫大学的农业研究部门获得的。在实验室中,制备了六种盐度水平的NaCl和KCl(0、1、2、3、4和5g/L),并以完全随机设计的方式进行了四次重复。研究结果表明,紫花苜蓿幼苗在发芽速度、发芽率、发芽指数、芽长、根长、活力指数、根冠比和幼苗鲜重、NaCl和KCl的相对伤害率、芽高降低和根高降低等方面存在显著差异(p<0.05)。然而,在所有测试的参数中,盐类型与盐度水平和盐类型之间没有显著影响,除了在5%显著水平下降低芽长和芽高。培养基中盐(NaCl和KCl)浓度的增加导致盐处理的紫花苜蓿种子的发芽速度、发芽率、发芽指数、芽长、根长、活力指数、根冠比和幼苗鲜重与对照(蒸馏水灌溉的紫花苜蓿)相比显著降低。同样,相对伤害率NaCl和KCl地上部高度降低、根系高度降低均随盐度的增加而显著增加。一般来说,随着NaCl和KCl浓度的增加,紫花苜蓿的整体发芽率和幼苗早期生长性能下降。应研究盐度对紫花苜蓿生理、分子和生化特性的影响。关键词:骆驼花;盐度效应;NaCl、KCl;种子萌发;幼苗生长。
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Effect of Salt Stresses on Seed Germination and Early Seedling Growth of Camelina sativa L.
Camelina sativa is a promising low-input, high yielding biodiesel crop that can be suitable to grow on marginal lands and is a good source of omega-3 fatty acids. But, saltiness is an overall issue of agriculture that constrains the germination, development and productivity of plant because of osmotic and ionic poisonous quality impacts. The aim of this study was to assess the effect of salinity (NaCl and KCl) on germination and early seedling growth of Camelina sativa. Camelina sativa seeds were obtained from agricultural research sector of Wachemo University. In the laboratory, six salinity levels of NaCl and KCl (0, 1, 2, 3, 4 and 5 g/L) were prepared and arranged in completely randomized design with four replications. The result of the study revealed that C. sativa seedlings were differ significantly (p<0.05) on speed of germination, germination percentage, germination index, shoot length, root length, vigor index, root shoot ratio and seedling fresh weight, relative injury rates  of NaCl and KCl, shoot height reduction and root height reduction. However, there is no significant effect between salt type versus salinity level and salt type in all parameters tested except shoot length and shoot height reduction at 5% significant level. The increase in both salts (NaCl and KCl) concentration in culture medium causes a significant decreases in speed of germination, germination percentage, germination index, shoot length, root length, vigor index, root shoot ratio and seedling fresh weight of the salt treated C. sativa seeds as compared with the control (C. sativa seeds watered with distilled water). Similarly, relative injury rates NaCl and KCl shoot height reduction, root height reduction were highly increased as salinity level increases. Generally, as the concentration of NaCl and KCl was increased the overall germination and early seedling performance of C. sativa decreased. The effect of salinity on physiology, molecular and biochemical of properties of C. sativa should be studied. Keywords: Camelina sativa, Salinity effect, NaCl, KCl, Seed germination, Seedling growth.
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来源期刊
Momona Ethiopian Journal of Science
Momona Ethiopian Journal of Science MULTIDISCIPLINARY SCIENCES-
自引率
0.00%
发文量
13
审稿时长
12 weeks
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