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首页> 外文期刊>African Journal of Biotechnology >Evaluation of salt tolerance in almond [Prunus dulcis (L.) Batsch] rootstocks
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Evaluation of salt tolerance in almond [Prunus dulcis (L.) Batsch] rootstocks

机译：杏仁[Prunus dulcis（L.）Batsch]砧木耐盐性评估

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摘要

In this study, four interspecific?Prunus?rootstocks?(‘HS314’, ‘HS312’, ‘HS302’ and ‘GF677’)?and the Iranian almond cultivar ‘Sahand’ were subjected to four different salinity levels (1.5, 3, 6 and 9 dSm-1) to determine the effects of salt level on growth parameters and chemical compositions. The results obtained indicate that increased salinity level had significant negative effects on leaf chlorophyll content, leaf area, dry and fresh weight of root and shoot. In addition, increasing the salinity level in general caused an increase in leaf proline concentration; however, the different genotypes were significantly different in response to the salinity level. According to these findings, proline content increase in ‘Sahand’ cultivar was lower than those of the other studied genotypes were. The majority of the plant's responses to the high salinity levels (6 and 9 dSm-1) were significant with no deleterious effects observed on plant growth triggered by lower salt concentrations of 1.5 and 3 dSm-1. A significant decrease in total chlorophyll and chlorophyll? b content was also found at the high salinity levels but no significant change in chlorophyll? a was evident. The potassium (K+), magnesium (Mg2+), calcium (Ca2+), sodium (Na+) and chloride (Cl-) ion concentrations of the leaves and roots were significantly different among the studied genotypes due to their exposure to different salinity levels. The concentration of Mg2+, Cl-?and Na+?as well as the Na+/K+?ratio in the leaves of all the genotypes were increased by the salinity stress, whereas it had no significant effect on the Ca2+?and K+?concentrations as well as the Na+/Ca2+?ratio. The result obtained in this study suggest that ‘HS314’ and ‘GF677’ interspecific hybrids may represent novel sources of salinity tolerance.
机译：在这项研究中，对四个种间“李子”砧木（“ HS314”，“ HS312”，“ HS302”和“ GF677”）和伊朗杏仁品种“萨汉德”进行了四种不同的盐度水平（1.5、3、6和9 dSm-1）确定盐水平对生长参数和化学组成的影响。结果表明，盐度水平升高对根和枝条的叶绿素含量，叶面积，干重和鲜重都有明显的负面影响。另外，增加盐度水平通常会导致叶片脯氨酸浓度的增加。然而，不同的基因型对盐度水平的响应却显着不同。根据这些发现，“萨汉德”品种脯氨酸含量的增加低于其他研究基因型的脯氨酸含量增加。植物对高盐度水平（6和9 dSm-1）的大多数反应都是显着的，没有观察到较低的盐浓度1.5和3 dSm-1对植物生长的有害影响。总叶绿素和叶绿素显着减少？在高盐度下也发现b含量，但叶绿素没有显着变化。一个很明显。在基因型中，叶片和根系的钾（K +），镁（Mg2 +），钙（Ca2 +），钠（Na +）和氯离子（Cl-）离子浓度因暴露于不同盐度水平而显着不同。盐分胁迫使所有基因型叶片中的Mg2 +，Cl-α和Na +β浓度以及Na + / K +比率增加，而对Ca2 +和K +α浓度没有明显影响。作为Na + / Ca2 +比率。这项研究获得的结果表明，“ HS314”和“ GF677”种间杂种可能代表了耐盐性的新来源。

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