Plant Growth and mineral element content of different gourd species and watermelon under salinity stress
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Dosyalar
Tarih
2009
Yazarlar
Dergi Başlığı
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Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Crimson Tide karpuz [Citrullus lanatus (Thunb.) Matsum. and Nakai] çeşidi ve karpuza anaçlık potansiyeli olan 7 farklı kabak genotipi [Cucurbita maxima, C. moschata, Luffa cylindrica, Benincasa hispida, Lagenaria siceraria (Skp ve Birecik) köy çeşidi ve L. siceraria melezi (FRGold)] 30 gün tuzlu (0, 4, 8, 12 ve 16 dS m-1) koşullarda yetiştirilerek tuz stresine tepkileri belirlenmiştir. Bitki ana gövde uzunluğu, kök kuru ağırlığı, yaprak ve gövde kuru ağırlığı, bitki kuru ağırlığındaki azalma, yapraklardaki Na+, Ca2+ ve K+ konsantrasyonu, Ca2+/Na+ ve K+/Na+ oranları belirlenmiştir. Kabak genotipleri tuzlu koşullarda incelenen bütün parametrelere farklı tepkiler vermişlerdir. L. cylindrica ve B. hispida hariç bütün kabak genotipleri tuz stresinden karpuza göre bitki gelişimi açısından daha az etkilenmişlerdir. İyon regülasyonu bakımından kabak genotipleri ve karpuz arasında önemli farklılıklar tespit edilmiştir. Tuz uygulaması ile birlikte yapraktaki Na+ konsantrasyonu yükselmiştir. L. cylindrica’nın yapraklarında Na+ birikimi önemli bir artış gösterirken, en düşük Na+ içeriği Birecik ve C. maxima’da belirlenmiştir. Tuz stresi altında, B. hispida ve L. cylindrica, karpuz ve diğer kabak genotiplerinden daha fazla Na+ biriktirmişlerdir. Ca2+/Na+ and K+/Na+ oranları tuz uygulaması ile birlikte önemli derecede azalmıştır. Azalma genotipe göre değişmiştir. Yüksek bitki kuru ağırlığına sahip olan genotipler, yüksek Ca2+/Na+ ve K+/Na+ oranlarına sahip olmuşlardır. Bitki büyüme parametreleri ile Ca2+/Na+ ve K+/Na+ oranları arasında önemli pozitif korelasyonlar bulunurken, Na+ içeriği ile önemli negatif korelasyon tespit edilmiştir. Cucurbita ve Lagenaria türleri tuz stresine, L. cylindrica, B. hispida ve karpuza göre daha yüksek tolerans göstermiştir.
The watermelon [Citrullus lanatus (Thunb.) Matsum. and Nakai] cultivar Crimson Tide and 7 different gourd genotypes [Cucurbita maxima, C. moschata, Luffa cylindrica, Benincasa hispida, Lagenaria siceraria landraces (Skp and Birecik), and L. siceraria hybrid (FRGold)] with rootstock potential for watermelon were grown under saline conditions (0, 4, 8, 12, and 16 dS m–1) to investigate the responses of the gourd genotypes and watermelon to 30 days of salt stress. Plant main stem length, shoot dry weight, root dry weight, reduction in shoot dry weight, concentration of Na+, Ca2+, and K+ in the leaves of the genotypes, and Ca2+/Na+ and K+/Na+ ratios were investigated. Plant length, and shoot and root dry weight of the plants significantly decreased as salinity stress increased. Gourd genotypes responded significantly differently to all investigated parameters under saline conditions. All genotypes had better growth performance than watermelon, except for L. cylindrica and B. hispida. The gourd genotypes and watermelon showed significant differences under saline conditions, with respect to ion regulation. Sodium concentration in the leaves of all the genotypes increased in response to salt application. There was a remarkable increase in Na+ concentration in the leaves of L. cylindrica, whereas the lowest Na+ concentration was observed in Birecik, and C. maxima, B. hispida, and L. cylindrica accumulated more Na+ than watermelon and the other gourd genotypes did under saline conditions. Ca2+/Na+ and K+/Na+ ratios were significantly reduced by salt treatment and the degree of decrease was dependent on genotype. Genotypes with higher Ca2+/Na+ and K+/Na+ ratios produced more dry weight. Significant positive correlations were observed between plant biomass parameters, and Ca2+/Na+ and K+/Na+ ratios, whereas strong negative correlations were observed between Na+ concentrations and shoot and root dry weight of the genotypes. Cucurbita and Lagenaria species were more tolerant to salinity stress than L. cylindrica, B. hispida, and watermelon.
The watermelon [Citrullus lanatus (Thunb.) Matsum. and Nakai] cultivar Crimson Tide and 7 different gourd genotypes [Cucurbita maxima, C. moschata, Luffa cylindrica, Benincasa hispida, Lagenaria siceraria landraces (Skp and Birecik), and L. siceraria hybrid (FRGold)] with rootstock potential for watermelon were grown under saline conditions (0, 4, 8, 12, and 16 dS m–1) to investigate the responses of the gourd genotypes and watermelon to 30 days of salt stress. Plant main stem length, shoot dry weight, root dry weight, reduction in shoot dry weight, concentration of Na+, Ca2+, and K+ in the leaves of the genotypes, and Ca2+/Na+ and K+/Na+ ratios were investigated. Plant length, and shoot and root dry weight of the plants significantly decreased as salinity stress increased. Gourd genotypes responded significantly differently to all investigated parameters under saline conditions. All genotypes had better growth performance than watermelon, except for L. cylindrica and B. hispida. The gourd genotypes and watermelon showed significant differences under saline conditions, with respect to ion regulation. Sodium concentration in the leaves of all the genotypes increased in response to salt application. There was a remarkable increase in Na+ concentration in the leaves of L. cylindrica, whereas the lowest Na+ concentration was observed in Birecik, and C. maxima, B. hispida, and L. cylindrica accumulated more Na+ than watermelon and the other gourd genotypes did under saline conditions. Ca2+/Na+ and K+/Na+ ratios were significantly reduced by salt treatment and the degree of decrease was dependent on genotype. Genotypes with higher Ca2+/Na+ and K+/Na+ ratios produced more dry weight. Significant positive correlations were observed between plant biomass parameters, and Ca2+/Na+ and K+/Na+ ratios, whereas strong negative correlations were observed between Na+ concentrations and shoot and root dry weight of the genotypes. Cucurbita and Lagenaria species were more tolerant to salinity stress than L. cylindrica, B. hispida, and watermelon.
Açıklama
Anahtar Kelimeler
Orman Mühendisliği
Kaynak
Turkish Journal of Agriculture and Forestry
WoS Q Değeri
Q3
Scopus Q Değeri
Q1
Cilt
33
Sayı
1
