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首页> 外文期刊>Agrochimica >Watermelon leaf antioxidant defence under sea-like water irrigation differs with growth vigour
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Watermelon leaf antioxidant defence under sea-like water irrigation differs with growth vigour

机译：海上水灌溉下的西瓜叶抗氧化防御与生长活力不同

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Irrigation with 5 mS cm(-1) sea-like water compared to 1 mS cm(-1) one (control) did not affect Na+ and Cl- accumulation in leaves of less vigorous watermelon cv. Sugar Baby (SB), whereas it enhanced these ion levels in very vigorous cv. Crimson Sweet (CS). In both cvs. salinity stimulated thiobarbituric acid reactive substance production in leaves. Following stress, H2O2 concentration remained constant in SB leaves, and a concomitant doubling in superoxide dismutase (SOD) activity and total ascorbate content was recorded. On the contrary, a remarkable increase in H2O2 was observed in CS, accompanied by a reduction of SOD and ascorbate peroxidase activities as well as ascorbate level. Generally, salinity did not cause significant changes in leaf phenols and total antioxidant activity. More concentrated sea-like water caused 22 and 43% yield reduction in SB and in CS, respectively. Lower Na+ accumulation and higher antioxidant activity made SB more suitable for cultivation under saline conditions.
机译：与1ms cm（-1）厘米（-1）厘米（-1）（-1）相比，用5 ms（-1）℃灌溉（对照）不影响较弱的西瓜Cv叶片中的Na +和堆积。糖婴儿（SB），而它在非常剧烈的CV中增强了这些离子水平。深红色甜（CS）。在两个CVS中。盐度刺激叶片在叶中产生的硫酸反应物质产生。在应激之后，在Sb叶中保持H 2 O 2浓度仍然是恒定的，并且记录了超氧化物歧化酶（SOD）活性和总抗坏血酸含量加倍的伴随。相反，在CS中观察到H 2 O 2的显着增加，伴随着SOD和抗坏血酸过氧酶活性以及抗坏血酸水平的降低。通常，盐度没有造成叶片酚和总抗氧化活性的显着变化。更多浓缩的海样水分分别引起22和43％的Sb和Cs的屈服。降低Na +积聚和更高的抗氧化活性使得Sb更适合于盐水条件下培养。

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