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首页> 外文期刊>Acta Horticulturae >Seed germination responses to salt stress in wild and cultivated Sicilian cardoon genotypes
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Seed germination responses to salt stress in wild and cultivated Sicilian cardoon genotypes

机译：野生和栽培西西里菜菜豆基因型种子对盐胁迫的萌发响应

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摘要

Salinity is a widespread stress issue limiting the growth and productivity of cultivated plants. More than 20% of the world's cultivated area is considered saline. Within this frame the identification and selection of genotypes able to germinate undersalt stress conditions is necessary for the success of the cultivation in marginal areas of the Mediterranean basin. The study was aimed at evaluating the germination response to salinity stress of a selected line of Cynara cardunculus L. var. altilis DC. (Line R07), highly salt-stress tolerant, obtained in previous activity at ISAFOM (Institute for Agricultural and Forest Systems in the Mediterranean), compared to some populations of C. cardunculus L. var. sylvestris Lam., collected in environments with different soil compositions and climate regime in eastern Sicily. The experiments were conducted using four different electrical conductivity and polyethylene glycol of the water conditions: 0.0 (control); 5.7 dS m1 (-0.3 MPa); 9.5 dS m1 (-0.6 MPa) and 17.6 dS m1 (-0.9 MPa), for each treatment four replica dishes were used with 25 seeds each. The salinity stress was performed adding NaCl solution to the germination medium. Overall, the different water potential conditions showed always a germinationpercentage higher than 75% for the type of C. cardunculus var. altilis. As regards to the wild populations of C. cardunculus var. sylvestris a severe decrease of germinated seed percentage with the increasing of conductivity was recorded. These genetic materials could be utilized for breeding programs in order to allow their introduction in cultivation system in some areas of the Mediterranean environment subjected to salt stress.
机译：盐度是一个普遍的胁迫问题，限制了栽培植物的生长和生产力。世界上超过20％的耕地被认为是盐水。在此框架内，鉴定和选择能够发芽盐胁迫条件下的基因型对于地中海沿岸边缘地区的成功种植是必要的。这项研究旨在评估发芽的Cynara cardunculus L. var。的盐分对盐胁迫的响应。 altilis DC。 （R07行）是高度耐盐胁迫的产品，与先前的一些山毛衣藻（C. cardunculus L. var）种群相比，是在ISAFOM（地中海农业和森林系统研究所）的先前活动中获得的。 sylvestris Lam。，在西西里岛东部具有不同土壤成分和气候状况的环境中收集。实验是使用四种不同的电导率和聚乙二醇在水条件下进行的：0.0（对照）; 5.7 dS m1（-0.3 MPa）; 9.5 dS m1（-0.6 MPa）和17.6 dS m1（-0.9 MPa），每次处理均使用四个复制盘，每个盘含25个种子。通过向发芽培养基中添加NaCl溶液来进行盐分胁迫。总体而言，不同的水势条件表明，对于C. cardunculus var类型，发芽率始终高于75％。 altilis。至于C. cardunculus var的野生种群。随着电导率的提高，樟子松的发芽种子百分率急剧下降。这些遗传材料可用于育种计划，以便将其引入到遭受盐胁迫的地中海环境某些地区的栽培系统中。

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