RUDN Journal of Agronomy and Animal IndustriesRUDN Journal of Agronomy and Animal IndustriesВестник Российского университета дружбы народов. Серия: Агрономия и животноводство2312-797X2312-7988Peoples’ Friendship University of Russia named after Patrice Lumumba1952010.22363/2312-797X-2019-14-4-319-328Crop productionРастениеводствоResearch ArticleInfluence of salinity on vegetative growth and photosynthetic pigments of bitter almond rootstockВлияние засоления на вегетативный рост и фотосинтетические пигменты горького миндаляBadranAntar MahmudБадранАнтар МахмудhD student, Agroengineering Department, Agrarian and Technological Instituteаспирант, агроинженерный департамент, Аграрно-технологический институтdr_antar_mahmoud@yahoo.comSavinIgor YuryevichСавинИгорь ЮрьевичCorresponding Member of the Russian Academy of Sciences, Doctor of Agricultural Sciences, Deputy Director for Research; Professor, Agroengineering Department, Agrarian and Technological Instituteчлен-корреспондент РАН, доктор сельскохозяйственных наук, заместитель директора по научной работе; профессор, агроинженерный департамент, Аграрно-технологический институтsavin_iyu@esoil.ruDesert Research CenterЦентр исследований пустыньPeoples’ Friendship University of Russia (RUDN University)Российский университет дружбы народовDokuchaev Soil Science InstituteПочвенный институт имени В.В. Докучаева15122019144VOL 14, NO4 (2019)ТОМ 14, №4 (2019)31932829122019Copyright ©; 2019, Badran A.M., Savin I.Y.Copyright ©; 2019, Бадран А.М., Савин И.Ю.2019Badran A.M., Savin I.Y.Бадран А.М., Савин И.Ю.http://creativecommons.org/licenses/by/4.0https://agrojournal.rudn.ru/agronomy/article/view/19520Bitter almond rootstock is considered one of the most vital rootstocks for stone fruit species but it is classified as a plant sensitive to salinity. This experiment was carried out to study the effect of salt stress on vegetative growth and photosynthetic pigments of bitter almond rootstock as an attempt to sustain growth and increase its tolerance to high salt concentrations. However, the seeds were soaked in salt solution of NaCl as 1, 3, and 5 dsm-1 for 48 hours before stratification. After that, nuts were sown in perlite and treated with different saline solutions subsequently stratified at 6 ℃ for eight weeks. Sprouted seeds were cultivated in pots with a mixture of peat and perlite and treated only with the highest salt concentration 5 dsm-1. The treatments were arranged in a complete randomized block design with three replications. Vegetative traits and photosynthetic pigments content were estimated. The results revealed that soaking and pre-treating seed of bitter almond rootstock by means of high salt concentration 5dsm-1 during the germination period and subsequently after planting produced stronger transplants that had hardening, adaptation and could avoid the hyperosmotic shock of salt stress after planting. It is obvious throughout; increment of stem diameter, plant height, total number of leaves\plant, fresh and dry weight of leaves, photosynthetic pigments and total carbohydrate content of such transplants. While other coming seedlings from low salt concentrations were exposed to hyperosmotic shock and salt injury therefore inhibit growth rate of such plants, increased falling of leaves and finally reduced photosynthetic pigments content in the resulting seedlings.Горький миндаль является одним из наиболее используемых в качестве подвоя сортов косточковых плодовых культур, однако отличается чув-ствительностью к солевому стрессу. Проведены опыты по изучению воздействия различных уровней засоленных поливных вод на вегета-тивный рост и фотосинтетические пигменты горького миндаля с зада-чей поиска метода увеличения его устойчивости к засолению. Oрехи до стратификации замачивали в растворе NaCl различной степени: 1 dsm-1, 3 dsm-1 и 5 dsm-1 за 48 ч. Затем семена посеяли в перлит и в течение 8 недель при температуре 6 ℃ поливали раствором NaCl различной степени. Проросшие семена высаживали в горшки со смесью торфа и перлита и поливали водным раствором с самой высокой концентрацией соли 5 dsm-1. Проведены полные блочные рандомизированные исследования с троекратным повто-рением. Результаты показали, что замачивание и орошение семян горького миндаля водой с высоким концентратом соли 5 dsm-1 в период прорастания, а затем после посадки приводило к большей силе расса-ды с наилучшей адаптацией к солевому стрессу после посадки, что четко выявляется по таким параметрам, как прирост диаметра стебля, высота растения, общее количество листьев/растений, свежая и сухая масса листьев, количество фотосинтетических пигментов и общее со-держание углеводов. При меньшей концентрации соли саженцы подвер-гались гиперосмотическому шоку, поэтому солевые травмы препятство-вали росту таких растений, происходило увеличение падения листьев и снижение содержания фотосинтетических пигментов в полученных са-женцах.ion toxicitysalinityNaClstratificationadaptationNaClионная токсичностьзасоленностьстратификацияадаптация1.Gupta IC. Use of saline water in agriculture. 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