Germination response of grasspea (Lathyrus sativus L.) and arugula (Eruca sativa L.) to osmotic and salinity stresses

Abstract

This paper treats the stability of two superposed gravitating streams rotating about the axis transverse to the horizontal magnetic field. The critical wave number for instability is found to be affected by rotation for propagation perpendicular to the axis about which the system rotates. The critical wave number for instability is not affected by rotation when waves propagate along the axis of rotation. The critical wave number is affected by both the magnetic field and the streaming velocity in both cases. Both the magnetic field and the rotation are stabilizing, while the streaming velocity is destabilizing.

Saline Stress Impairs Lipid Storage Mobilization during Germination in Eruca sativa

“…The results revealed that germination was strongly delayed by the different salt concentrations, excluding the lowest one of 137 mM ( Figure 1 ). Similar findings were obtained in two previous studies on E. sativa germination under salinity conditions [ 13 , 31 ]. Moreover, seed germination percentage decreased with increasing NaCl concentration as well ( Figure 1 B).…”

“…Instead, to counteract oxidative stress, plants resort to antioxidant substances as for instance ascorbate and carotenoids, along with detoxifying enzymes such as superoxide dismutase and catalase [ 10 ]. Regarding the developmental stages, salt negatively impacts seed germination and seedling development, thus influencing the vitality of the adult plants [ 11 , 12 , 13 ]. In particular, salt stress negatively affects seed germination both osmotically, through water absorption reduction, and ionically, through Na + and Cl − accumulation, causing a disorder in nutrient uptake and toxicity effects [ 14 , 15 , 16 ].…”

“…Regarding seed germination of E. sativa under salt stress conditions, Miceli et al (2003) [ 28 ] recorded a germination percentage of 90% under salt stress up to 10 mS cm −1 with no remarkable morphological variation in seedling plants. Fallahi et al [ 13 ], testing the germination of E. sativa under different salinity levels, observed a reduction of the germination rate by 16% and 29% under 100 and 150 mM of NaCl, respectively. In addition, the authors showed a germination percentage of 38% for E. sativa under salinity stress of 200 mM.…”

Tuzluluk (NaCl) stresinin mürdümükde (Lathyrus sativus L.) çimlenme ve erken fide gelişme özelliklerine etkisi

“…Tsegay and Gebreslassie (2014) mürdümük fidelerinde tuz stresinin kökçük yaş ağırlıklarını 7.4 g ağırlığından 3.7 g ağırlığına kadar düşürdüğünü bildirmektedir. Benzer sonuçlar Fallahi et al, (2015) tarafından da ifade edilmiştir.…”

“…Tuz stresinin mürdümük tohumlarının çimlenme özelliklerinde gerilemeye sebep olduğu birçok araştırıcı tarafından (Mahdavi and Sanavy, 2007;Talukdar, 2011;Haileselasie and Gselasie, 2012;Tsegay and Gebreslassie, 2014;Fallahi et al, 2015;Gheidary et al, 2017) bildirilmektedir. Talukdar (2011), 8 mürdümük genotipi ile yaptığı çalışma sonucunda 150 mM NaCl dozunun çeşitlerin çoğu için kritik seviye olduğunu tespit etmiştir.…”