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    CLASSIFICATION OF SOME LINSEED (Linum usitatissimum L.) GENOTYPES FOR SALINITY TOLERANCE USING GERMINATION, SEEDLING GROWTH, AND ION CONTENT
    (Inst Investigaciones Agropecuarias, 2012) Kaya, Mehmet Demir; Day, Sibel; Çıkılı, Yakup; Arslan, Neşet
    Salinity reduces germination, delays emergence, and inhibits seedling growth of linseed (Linum usitatissimum L.) while some varieties are less affected by salinity than others. In this study, we aimed to determine the effects of NaCl levels (0, 5, 10, 20 and 30 dS m(-1)) on germination and seedling growth of 10 linseed genotypes (lines 87, 89, 104, 114, 193, 194, 209, 215, C-90 and cv. Sari-85) and to classify the genotypes for salinity tolerance using germination and seedling characteristics. Germination percentage, mean germination time, root and shoot length, seedling fresh and dry weight, Na+ content and Na: K ratio of seedlings were investigated. Classification of linseed genotypes for salinity tolerance was done according to (i) combination of Principal Component and Cluster Analysis, (ii) Na+ content, and (iii) Na: K ratio of seedling. The results showed that the highest values were obtained from lines 193, 194 and 215 except for mean germination time, while germination percentage was not adversely influenced by NaCl up to 20 dS m(-1). Seedling growth was inhibited at 20 dS m(-1) although genotypes exhibited varying responses. Na+ content was enhanced by NaCl, but seedling from lines 194, 193 and 215 had the lowest Na+ content at all NaCl levels. Cluster analysis performed by multiple parameters revealed three groups for salinity tolerance. It was concluded that lines 193, 194, and 215 were tolerant, lines 87, 209, C-90, and cv. Sari-85 were moderately tolerant and lines 89, 104, and 114 were salt-sensitive genotypes. Classification of genotypes for Na+ content and Na: K ratio showed similar result for tolerant genotypes while different genotypes for sensitive group were detected.
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    Classification of some linseed (Linum usitatissimum L.) genotypes for salinity tolerance using germination, seedling growth, and ion content [Clasificación de algunos genotipos de linaza (Linum usitatissimum L.) para tolerancia a salinidad usando germinación, crecimiento de plántulas y contenido de iones. la salinidad reduce germinación, retrasa]
    (2012) Kaya, Mehmet Demir; Day, Sibel; Çıkılı, Yakup; Arslan, Neşet
    Salinity reduces germination, delays emergence, and inhibits seedling growth of linseed (Linum usitatissimum L.) while some varieties are less affected by salinity than others. In this study, we aimed to determine the effects of NaCl levels (0, 5, 10, 20 and 30 dS m -1) on germination and seedling growth of 10 linseed genotypes (lines 87, 89, 104, 114, 193, 194, 209, 215, C-90 and cv. Sarı-85) and to classify the genotypes for salinity tolerance using germination and seedling characteristics. Germination percentage, mean germination time, root and shoot length, seedling fresh and dry weight, Na + content and Na:K ratio of seedlings were investigated. Classification of linseed genotypes for salinity tolerance was done according to (i) combination of Principal Component and Cluster Analysis, (ii) Na + content, and (iii) Na:K ratio of seedling. The results showed that the highest values were obtained from lines 193, 194 and 215 except for mean germination time, while germination percentage was not adversely influenced by NaCl up to 20 dS m -1. Seedling growth was inhibited at 20 dS m -1 although genotypes exhibited varying responses. Na + content was enhanced by NaCl, but seedling from lines 194, 193 and 215 had the lowest Na + content at all NaCl levels. Cluster analysis performed by multiple parameters revealed three groups for salinity tolerance. It was concluded that lines 193, 194, and 215 were tolerant, lines 87, 209, C-90, and cv. Sarı-85 were moderately tolerant and lines 89, 104, and 114 were salt-sensitive genotypes. Classification of genotypes for Na + content and Na:K ratio showed similar result for tolerant genotypes while different genotypes for sensitive group were detected.
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    SCREENING OF THREE SAFFLOWER (Carthamus tinctorius L.) CULTIVARS UNDER BORON STRESS
    (Wydawnictwo Akad Rolniczej W Lublinie, 2017) Day, Sibel; Çıkılı, Yakup; Aasim, Muhammad
    Excess of boron in soil and irrigation water is a serious constrain to crop production in many areas of the World as well as in Turkey. A pot experiment was carried out with to screen safflower cultivars in order to investigate the effects of boron toxicity stress on early growth and ions composition. Three safflower cultivars (Carthamus tinctorius cv. Balci, Yenice, Remzi Bey) were grown in pots containing alkaline and potassium rich soil, additionally supplemented with 0, 4, 8, 16, 32, 64 and 128 mg kg(-1) boron. Chlorophyll content of all cultivars decreased with excessive boron levels. Plant height, shoot fresh and dry weight significantly increased at 4 mg kg(-1) boron level followed by sharp decline with the other treatments. Boron content of cultivars increased and the highest amount was observed at 128 mg kg(-1) boron level. Sodium content of all cultivars gradually increased with increase in B concentration. Whereas, potassium and calcium content reduced with increased B. Phosphorus content of all cultivars were least at 128 mg kg boron level. Results revealed that cv. balci appeared to tolerant to boron in soil up to 32 mg kg(-1) and can be recommended for growing and breeding material for boron rich soils of Central Anatolia.