Al-Harbi Abdulaziz, Hejazi Ahmad, Al-Omran Abdulrasoul
Plant production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
Soil Science Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
Saudi J Biol Sci. 2017 Sep;24(6):1274-1280. doi: 10.1016/j.sjbs.2016.01.005. Epub 2016 Jan 7.
Quantity and quality of irrigation water are considered the most imperative limiting factors for plant production in arid environment. Adoptions of strategies can minimize crop water consumption while nonexistent yield reduction is considered challenge for scholars especially in arid environment. Grafting is regarded as a promising tool to avoid or reduce yield loss caused by abiotic stresses. Tomato ( Mill.), commercial cultivar Faridah was grafted on Unifort rootstock and grown under regulated deficit irrigation (RDI) (100%, 80% and 60% ETc), using two types of irrigation water, fresh (EC = 0.86 dS/m) and brackish (EC = 3.52 dS/m). The effects of grafting and RDI on water use efficiency, vegetative growth, yield, fruit quality were investigated. Plant vegetative growth was reduced under water and salinity stresses. Grafting the plant significantly improves the vegetative growth under both conditions. The results showed that crop yield, Ca and K were considerably increased in grafted tomato compared to non-grafted plants under water and salinity stresses. Grafted tomato plants accumulated less Na and Cl, especially under high levels of salinity compared to non-grafted plants. Grafting tomato plants showed a slight decrease on the fruit quality traits such as vitamin C, titratable acidity (TA) and total soluble solids (TSS). This study confirmed that grafted tomato plants can mitigate undesirable impact of salt stress on growth and fruit quality.
灌溉水的数量和质量被认为是干旱环境下植物生产最关键的限制因素。采取策略以尽量减少作物耗水量，同时不降低产量，这对学者来说是一项挑战，尤其是在干旱环境中。嫁接被视为一种有前景的手段，可避免或减少非生物胁迫造成的产量损失。番茄（品种名）商业品种Faridah嫁接到Unifort砧木上，并在调亏灌溉（RDI）（100%、80%和60%蒸发蒸腾量）条件下生长，使用两种灌溉水，淡水（电导率=0.86 dS/m）和微咸水（电导率=3.52 dS/m）。研究了嫁接和RDI对水分利用效率、营养生长、产量、果实品质的影响。在水分和盐分胁迫下，植物营养生长受到抑制。嫁接显著改善了两种条件下的植物营养生长。结果表明，在水分和盐分胁迫下，与未嫁接植株相比，嫁接番茄的作物产量、钙和钾含量显著增加。与未嫁接植株相比，嫁接番茄植株积累的钠和氯较少，尤其是在高盐度水平下。嫁接番茄植株在果实品质性状如维生素C、可滴定酸度（TA）和总可溶性固形物（TSS）方面略有下降。本研究证实，嫁接番茄植株可以减轻盐胁迫对生长和果实品质的不良影响。
