DETERMINATION OF SALT TOLERANCE OF SOME ANNUAL GRASS TYPES UNDER IN VITRO CONDITIONS

H. Pınar, Nadide Kiliç, Mahmut Kaplan
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Abstract

Salinity effects in this period may cause insufficient development of the plant in the later periods. For the continuation of plant production in salinized areas, it is necessary to determine and increase the salt resistance of genotypes. Annual grass plants are grown extensively in the world. However, as with other plant species, annual grass plants are adversely affected by soil salinity. The aim of present study; determination of the salt tolerance of annual grass cultivars in vitro. In the study, 25 registered grass varieties were used as material. Salt concentrations of 150 mM NaCl were applied to determine the response of annual grass varieties to salt stress. Root length, shoot length, root-shoot fresh weight and root-shoot dry weight were examined in in vitro salt testing and the lowest values in the control group in terms of these properties were obtained from Efe and Vallivert cultivars, while the highest value was obtained from Medoacus and Trinova cultivars. In salt application, the lowest value was obtained from Tornado, Vallivert, Venus varieties, while the highest value was obtained from Medoacus and Trinova varieties. In addition, the variation obtained among the annual grass varieties used in the study can be used both in the grass aplication and in breeding programs.
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几种一年生草在离体条件下的耐盐性测定
这一时期的盐度效应可能导致植物后期发育不足。为了盐渍化地区植物生产的继续,有必要确定和提高基因型的耐盐性。一年生草本植物在世界上广泛种植。然而,与其他植物物种一样,一年生禾本科植物受到土壤盐度的不利影响。本研究的目的;一年生草品种离体耐盐性的测定。本研究以25个已登记的牧草品种为材料。采用150 mM NaCl盐浓度测定一年生草品种对盐胁迫的响应。在离体盐试验中测定了根长、茎长、根冠鲜重和根冠干重,结果表明,对照组中这些指标均以埃菲(Efe)和缬草(Vallivert)品种最低,而以美多阿斯(Medoacus)和翠诺瓦(Trinova)品种最高。施盐量以Tornado、Vallivert、Venus品种最低,Medoacus和Trinova品种最高。此外,本研究中所获得的一年生草品种间的变异可用于草的施用和育种计划。
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