Field experiments was carried out in Al-Kahlediyah (Marfaq), Jordan to evaluate four promising triticale accession and to investigate the potentiality of these accession in respect to different level of salinity. Three accessions of triticale (PI-429166, PI-429152, PI-429101) and the locally cultivated cultivar (Syria-1) were grown under three treatments moderate (15.6 dS [m.sup.-1]) and high (30.1 dS [m.sup.-1]) soil salinity planted in winter (15 December) in 2014 and 2015, respectively, and high soil salinity (33.5 dS [m.sup.-1]) planted in spring (late sowing in spring (15 February) in 2017. Our results indicated that No significant differences (P[less than or equal to] 0.05) in grain yield, straw yield and harvest index were recorded between the accessions of triticale. On the other hand, salinity levels had a significant effect on grain yield and number of tiller per plants. The negative effect of salinity on grain yield and number of tiller per plants was significantly higher when triticale plant grown late under high salinity level.
salinity, triticale , Jordan, grain yield, straw yield.
Plant growth and productivity is affected by many biotic and abiotic factors [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18] Soil salinity and sodicity are global problems that are common in different part of the world. It affects more than 10 percent of arable land especially in West and South Asia and North Africa. Bray et al.  reported that salinization is fast growing on a global scale, decreasing average yield for most important crops by more than 50 %. Triticale growth and development are adversely affected by salinity. Lauchli and Epstein,  reported that salinity is major environmental stress that limits agricultural production in different part of the world and it is affected the plant in different ways such as osmotic effects, specific-ion toxicity and/or nutritional disorders. MacDonald,  reported that salt-stressed crop may be predisposed to infection by soil pathogens. A numbers of studies have been reported that salinity can increase the incidence of phytophthora root rot in chrysanthemum  and tomato . The literature has confirmed that plant reactions to salt stress have much in common.
For example, according reference  salinity has been described as a two-phase growth response . The first phase of growth diminution is categorized by osmotic stress because of salts in the exterior solution, while the second phase changes after salt build-up in transpiring leaves and display clear genotypic differences. The present study was designed to evaluate four promising triticale accession and to investigate the potentiality of these accession in respect to different level of salinity.
MATERIAL AND METHODS
The study was carried out in Al-Kahlediyah (Marfaq), Jordan in an area measuring approximately 350 [m.sup.2]. The soil at the site is calcareous, pH 7.5, clay loam textured and salinity of 15.7 dS [m.sup.-1]. The climate is Mediterranean of mild rainy winters and dry hot summers (Loss & Siddique, 1997). The longer term rain average is 120 ml per year (Metrological Department, 2013).
One factor randomized complete design combined over location/year. The trial lands were irrigated by adding...
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