Shima Alaei; Enayatollah Tafazoli
Abstract
Salinity is a limiting factor for plant growth and crop production. A study was conducted to determine the salt tolerance of olive (Olea europaea cv. Roughani) and its effects as combined with application of kinetin and cycocel plant growth regulators on Na and K distribution. The experiment was carried ...
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Salinity is a limiting factor for plant growth and crop production. A study was conducted to determine the salt tolerance of olive (Olea europaea cv. Roughani) and its effects as combined with application of kinetin and cycocel plant growth regulators on Na and K distribution. The experiment was carried out in a completely randomized design with factorial arrangements with four replications. Accumulation of Na and K in aerial parts and roots of plants were determined. The results indicated that increasing salinity level caused a increase in Na content but a decrease in K/Na ratio. Sodium concentration was higher in roots. At 200 mM salinity leaf and shoot Na and increased significantly at 5% level. Also at 100 and 200 mM salinity, Leaf K decreased significantly at 5% level. K/Na ratio at 50,100 and 200 mM salinity level decreased. Application of 250 mg/l kinetin at the 200 mM salinity increased leaf Na that was significantly different at 5% level ,DNMRT. Application of 500 and 1000 mg/l cycocel, decreased shoot K (at the 100 mM salinity) and leaf K (at the 0 and 50 mM salinity). The decrease was statistically significant (p
Abdolhossein Aboutalebi; Enayatollah Tafazoli
Abstract
Abstract
One way of the increasing saline tolerance in citrus plants is grafting of sensitive commercial cultivars on to tolerant rootstocks. Sweet lime (Citrus limetta) is one of the most sensitive species to salinity of soil and water, and under such conditions, drastic reduction of both vegetative ...
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Abstract
One way of the increasing saline tolerance in citrus plants is grafting of sensitive commercial cultivars on to tolerant rootstocks. Sweet lime (Citrus limetta) is one of the most sensitive species to salinity of soil and water, and under such conditions, drastic reduction of both vegetative and yield occured. This reaserch was conducted in completely randomaized design with factorial arrangement and four replications in order to study the effect of salinity and different rootstocks namely: Sour orange(C. aurantium), Sweet lime(C. limetta), Mexican lime( C. aurantifolia), Volkameriana(C. volkameriana) and Bakraii(C. reticulata C. limetta) on concenreation of micro elements in sweet lime leaf. Four levels of salinity imposed were: 0, 20, 40 and 60 mili mole L-1 NaCl. Results showed that rootstock had significant effects on leaf concentration of micro elements and under salinity treatments different changes were occurred in concentration of micro elements among rootstocks. Generally concluded that, Volkamer lemon, and to some extent Bakraii, could induce salinity tolerance in Sweet lime scion.
Key words: Rootstock, Salinity, Micro elements, Sweet lime
Rohollah Jahanbin; Sara Yavari; Saeid Eshghi; Enayatollah Tafazoli
Abstract
Abstract
Navel oranges are cultivated in many countries including Iran and in Comparable to With other cultivars of citrus have an especial importance in THE world The quality and quantity of this Product in fluenced by many factors. This research was CARRIED OUT to investigate the effect of 2,4-D ...
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Abstract
Navel oranges are cultivated in many countries including Iran and in Comparable to With other cultivars of citrus have an especial importance in THE world The quality and quantity of this Product in fluenced by many factors. This research was CARRIED OUT to investigate the effect of 2,4-D and K2SO4 and their interaction on quantitative and qualitative characteristics of sweet orange cv. Navel fruits afactorial enperiment as a randomized complete block de sign (RCBD) with 9 treatments and 4 replications was Performed. 2,4-D was sprayed at 0, 10 and 20 mg l-1 and K2SO4 at 0, 1 and 2 percent when diameter of fruits was 15 mm in the growing season of 2006. ResultS has shown that 2,4-D at 20 mg l-1 plus 2% potassium significantly increased weight and total acid of fruit and at 10 mg l-1 with different concentration of potassium increased fruit juice significantly. Potassium had a Significantly effect on qualitative characteristics of fruits including total soluble solids, acidity and ascorbic acid.
Key words: Navel sweet orange, 2,4-D, K2SO4, fruit size, fruit quality
