TY  - JOUR

AU  - Bayat, Hassan
AU  - Noghondar, Morteza Alirezaie
AU  - Neamati, Hossein
AU  - Nezami, Ahmad

T1  - Exogenous application of ascorbic acid alleviates chilling injury in apricot (Prunus armeniaca L. cv. Shahroudi) flowers

JO  - Journal of Stress Physiology & Biochemistry

Y1  - 2013

VL  - 9

IS  - 3

SP  - 199

EP  - 206

UR  - http://www.jspb.ru/issues/2013/N3/JSPB_2013_3_199-206.pdf


KW  - electrolyte leakage
KW  - foliar spray
KW  - pink cluster
KW  - stress





N1  - Owner: Алексей

N1  - Added to JabRef: 2013.07.16

N2  - One of the most important limiting factors in spread of apricot in Iran is late spring frost, which damages flower bud and decrease total yield of crop. It has been found that ascorbic acid (AA) plays a beneficial role during plant response to chilling and freezing stresses. To evaluate the effects of AA on alleviating of cold stress, the flower buds of Prunus armeniaca L. cv. Shahroudi were sprayed at pink cluster stage with AS at 4 levels (0, 100, 200 and 300 mg. L<sup>-1</sup>) and were then exposed to artificial cold stress (4 h at &amp;#8211;4 °C) or without cold stress (+ 25°C). Experimental attributes including electrolyte leakage (EL) of flower buds and percentage of damage of pistil, anthers and petals to temperature treatments were determined. The results showed that at -4°C the lowest and highest percentage of damage and EL of flower buds were observed in application of 200 and 0 mg. L<sup>-1</sup> AA, respectively. The highest and lowest percentage of damage of flower organs and EL were obtained in application of 300 and 200 mg. L<sup>-1</sup> AA, respectively at + 25 °C. Based on the results of this experiment, AA alleviates the negative effect of cold stress on EL and flower organ damages in apricot cv. Shahroudi, depending on the concentrations of AA used.

ER  -