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Maternal salinity improves yield, size and stress tolerance of Suaeda fruticosa seeds
Journal of Arid Land ( IF 3 ) Pub Date : 2020-03-01 , DOI: 10.1007/s40333-020-0054-1
Syed Z. Shah , Aysha Rasheed , Bilquees Gul , Muhammad A. Khan , Brent L. Nielsen , Abdul Hameed

Shrubby seablite or lani (Suaeda fruticosa Forssk) is a perennial euhalophyte with succulent leaves, which could be planted on arid-saline lands for restoration and cultivated as a non-conventional edible or cash crop. Knowledge about the impacts of maternal saline environment on seed attributes of this important euhalophyte is lacking. This study investigated the effects of maternal salinity on yield, size and stress tolerance of S. fruticosa seeds. Seedlings of S. fruticosa were grown in a green net house under increasing maternal salinity levels (0, 300, 600 and 900 mM NaCl) until seed production. Total yield, size, stress tolerance and germination of the descended seeds under different maternal saline conditions were examined. Plants grown under saline conditions (300, 600 and 900 mM NaCl) produce a substantially higher quantity of seeds than plants grown under non-saline condition (0 mM NaCl). Low maternal salinity (300 mM NaCl) improves seed size. Seeds produced under all maternal salinity levels display a higher tolerance to low temperature (night/day thermoperiod of 10°C/20°C), whereas seeds produced under 300 mM NaCl maternal saline condition show a better tolerance to high temperature (night/day thermoperiod of 25°C/35°C) during germination. Seeds from all maternal saline conditions germinate better in the 12 h photoperiod (12 h light/12 h dark) than in the dark (24 h dark); however, seeds produced from low and moderate maternal saline conditions (300 and 600 mM NaCl) show a higher germination in the dark than those from control and high maternal saline conditions (0 and 900 mM NaCl). In general, maternal salinity is found to improve yield, size and stress tolerance of S. fruticosa seeds.

中文翻译:

母体盐度提高了苏木种子的产量、大小和胁迫耐受性

Shrubby seablite 或 lani (Suaeda fruticosa Forssk) 是一种多年生真盐植物,具有多汁的叶子,可以种植在干旱盐碱地进行恢复,也可以作为非常规食用或经济作物种植。缺乏关于母体盐水环境对这种重要真盐植物种子属性影响的知识。本研究调查了母体盐度对 S. fruticosa 种子产量、大小和胁迫耐受性的影响。在不断增加的母体盐度水平(0、300、600 和 900 mM NaCl)下,将 S. fruticosa 的幼苗在绿色网舍中生长,直到种子产生。检查了不同母体盐水条件下后代种子的总产量、大小、胁迫耐受性和发芽情况。在盐碱条件下生长的植物 (300, 600 和 900 mM NaCl) 产生的种子数量明显高于在无盐条件 (0 mM NaCl) 下生长的植物。低母体盐度(300 mM NaCl)可提高种子大小。在所有母体盐度水平下生产的种子对低温(10°C/20°C 的夜间/白天热周期)显示出更高的耐受性,而在 300 mM NaCl 母体盐水条件下生产的种子显示出对高温(夜间/白天)的更好耐受性发芽期间的温度周期为 25°C/35°C)。来自所有母体盐水条件的种子在 12 小时光周期(12 小时光照/12 小时黑暗)中比在黑暗中(24 小时黑暗)发芽得更好;然而,在低和中等母体盐水条件(300 和 600 mM NaCl)下产生的种子在黑暗中比在对照和高母体盐水条件(0 和 900 mM NaCl)下产生的种子显示出更高的发芽率。一般来说,
更新日期:2020-03-01
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