S290 : Study of the effects of enviroment temperature on uptake and movement of some nutrient element on several commercial pistachio rootstocks
Thesis > Central Library of Shahrood University > Agricultural Engineering > MSc > 2015
Authors:
Hajar Hokmabadi [Author], Mehdi Rezaei[Supervisor], Hossein Hokmabadi [Supervisor]
Abstarct: In order to evaluate the effect of ambient temperature on the uptake and movement of nutrients in a some commercial pistachio rootstocks a factorial experiment in a completely randomized design (CRD) was carried out with three replications. The first factor was three rootstocks including: Pistacia vera cv. Badamie-zarand, P. vera cv. Ghazvini and P. vera cv. Sarakhsi and second factor was four temperature including : 10, 15, 20 and 25 degrees Celsius . Pistachio seedlings after planting to 15-leaf stage were kept in the greenhouse and then transfer to germinator for applying thermal treatments were for 15 days.The results about physiological and growth parameters showed that there were significant effects between rootstocks and in most of parameters Badamie-e-zarand was the best in compare to the two other rootstocks . Increased in ambient temperature caused increases in dry matter of roots, stems and leaves and leaf area of selected rootstocks. Increased ambient temperature up to C ◦25 positive impact and multiplier on the basis of growth indices studied. The minimum SPAD index was obtained at 10 and 15 ° C and maximum SPAD index was obtained in temperatures of 20 and 25 degrees Celsius respectively. Minimum and maximum stomatal conductance were obtained in Sarakhs rootstocks at 10 and 25 ° C respectively. The concentration of calcium, potassium, nitrogen in stem , concentration of phosphorus, nitrogen, calcium and sodium in the root and phosphorus and nitrogen content in leaves affected by different applied temperature were significant between rootstocks.Results regarding to uptake and transfer rate of nutrients showed uptake rate of nitrogen, phosphorus, potassium, calcium and magnesium in the roots of Sarakhs rootstock was more than of two other rootstocks. Rate of nutrient transferring in Ghazvini rootstock was more than to other rootstocks.Results also revealed that uptake rate of nitrogen, phosphorus, potassium, calcium and magnesium by whole plant were most in Badamaie-e-zarand rootstock in compare to the Ghazvini and Sarakhs rootstocks. The results showed that with increasing in ambient temperature, uptake rate of nitrogen, phosphorus and potassium by roots of different rootstocks were decreased while uptake rate of calcium were increased with increasing of ambient temperature. he average temperature in relation to ambient temperature by increasing the absorption rate of nutrients phosphorus, nitrogen and potassium by roots basis of pistachios reduced calcium absorption by the roots, while the rate increased with increasing ambient temperature. Results about magnesium revealed uptake of magnesium firstly increased by increasing the ambient temperature up to the 20 degrees Celsius and then reduced at 25 ° C .Nitrogen, phosphorus, sodium, potassium transferring rate had similar trend with increasing ambient temperature except calcium as with increasing of temperature increases from 10 to 15 ° C trasferng rate were increased, but with increasing of tempreture from 15 up to 25° C trasfering rate of nutrient reduced, however, about calcium with increasing temperature from 20 to 25 ° C calcium trnafring rate increased as well. The trend uptake rate of sodium and calcium by the plant and process changes in absorption rates of potassium and magnesium with increasing temperature in seedlings of pistachios were similar between temperatures measured top speed of absorption of phosphorus and magnesium plant on the basis of Ghazvini and Sarakhsi at 20 ° C was observed . The temperatures measured at the highest speed the absorption of phosphorus and magnesium plant Ghazvini foundations and Sarakhsi at 20 ° C was observed. The maximum speed of uptake is rooted in the foundations of Badami Zarand Ghazvini for calcium, potassium, phosphorus, nitrogen and magnesium at temperatures between about reviews, a temperature of 25 ° C environment, whereas the maximum absorption of these elements by the roots Sarakhs at 20 ° C to except magnesium, magnesium uptake by roots in Sarakhs maximum temperature was 10 ° C environment, as well as the highest rate of absorption of phosphorus and nitrogen by root basis of Badami-Zarand and Ghazvini temperature was 10 ° C.
Keywords:
#uptake and movement #nutrient element #pistachio rootstocks #temperature Link
Keeping place: Central Library of Shahrood University
Visitor: