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Physiological and Biochemical Responses of 13 Cultivars of Triticale (x Triticosecale Wittmack) to Salt Stress
Gesunde Pflanzen ( IF 3.1 ) Pub Date : 2021-09-06 , DOI: 10.1007/s10343-021-00578-y
Selman Uluışık 1 , Signem Oney-Birol 2
Affiliation  

High salinity in soil is probably one of the most significant abiotic factors limiting plant/crop growth and development in arid and semi-arid regions. The objective of this study was to screen triticale varieties for tolerance or susceptibility to salt stress. Seedlings from 13 triticale varieties, durum wheat and rye genotypes were subjected to different salinity levels (0, 50, 100, 150, 200, 250 and 300 mM NaCI) and several physiological and biochemical parameters related to salinity tolerance traits were evaluated upon treatment. Seed germination significantly reduced up to 17% under 300 mM NaCI treatment. The results related to physiological traits indicated that Bera, Tatlicak97 and Alperbey had the highest seed germination with over 60% under 250 mM salinity treatment. In addition, although increasing NaCl concentration decreased coleoptile and radicle length, Tatlicak97 had the highest coleoptile and radicle length under 250 mM NaCI stress conditions. Biochemical analysis results indicated that proline, malondialdehyde (MDA) and hydrogen peroxide (H2O2) levels were strongly upregulated for all genotypes with an increase of NaCI concentration. These results suggest that although triticale varieties are tolerant to high salinity, there is variation in tolerance among different genotypes. The experiments provided preliminary evidence such as better growth parameters and increased proline content that Tatlicak97 could serve as genetic resource for improved triticale tolerance to salinity both future studies and plant breeding.



中文翻译:

13 个小黑麦品种 (x Triticosecale Wittmack) 对盐胁迫的生理生化反应

土壤中的高盐度可能是限制干旱和半干旱地区植物/作物生长和发育的最重要的非生物因素之一。本研究的目的是筛选小黑麦品种对盐胁迫的耐受性或易感性。来自 13 个小黑麦品种、硬粒小麦和黑麦基因型的幼苗经受了不同的盐度水平(0、50、100、150、200、250 和 300 mM NaCl),并在处理时评估了与耐盐性状相关的几个生理和生化参数。在 300 mM NaCl 处理下,种子发芽显着降低了 17%。与生理性状相关的结果表明,在 250 mM 盐度处理下,Bera、Tatlicak97 和 Alperbey 的种子发芽率最高,超过 60%。此外,尽管增加 NaCl 浓度会降低胚芽鞘和胚根长度,但 Tatlicak97 在 250 mM NaCl 胁迫条件下具有最高的胚芽鞘和胚根长度。生化分析结果表明脯氨酸、丙二醛(MDA)和过氧化氢(H随着 NaCl 浓度的增加,所有基因型的2 O 2 ) 水平都被强烈上调。这些结果表明,虽然小黑麦品种对高盐有耐受性,但不同基因型之间的耐受性存在差异。实验提供了初步证据,例如更好的生长参数和增加的脯氨酸含量,表明 Tatlicak97 可以作为遗传资源,在未来的研究和植物育种中提高小黑麦的耐盐性。

更新日期:2021-09-06
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