DROUGHT RESISTANCE OF WILD PEAR (PYRUS BOISSERIANA BUHSE.)

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ZARAFSHAR MEHRDAD; AKBARINIA MOSLEM; HOSSEINI SEYED MOHSEN; RAHAIE MEHDI

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Journal: Journal of Forest and Wood Products Year:2016 | Volume:69 | Issue:1 Page(s): 97-110

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Title

DROUGHT RESISTANCE OF WILD PEAR (PYRUS BOISSERIANA BUHSE.)

Author(s)

ZARAFSHAR MEHRDAD | AKBARINIA MOSLEM | HOSSEINI SEYED MOHSEN | RAHAIE MEHDI | Issue Writer Certificate

Keywords

PIGMENTSQ1

RESISTANCE MECHANISMQ2

WILD PEARQ2

WILD ECOSYSTEMQ1

WATER WITHHOLDINGQ1

Abstract

Trees are important sources of wild germplasm for sustainable horticulture and forestry. WILD PEAR (Pyrus boisseriana) germplasm was collected from a forest ecosystem (Jozak and Darkesh, north Khorasan) and its resistance potential to drought stress was surveyed in a greenhouse. In six-month seedlings, signs of leaf rolling appeared after 18 days without water (drought simulation). Gas exchange parameters, such as net photosynthesis, stomatal conductance, and transpiration decreased with increasing drought over time. Decreasing net photosynthesis caused negative effects on growth and leaf expansion and caused the seedlings to drop their leaves. In contrast, there was no effect of drought on root and shoot biomass compared to control plants. Mean xylem water potential was -0.66 and -2.22 for control and stressed seedlings, respectively. The water potential of xylem led to decreasing in RWC (%) and finally electrolyte leakage increased about 45%. We did not observe any negative effect of drought on chlorophylls a and b, but the carotenoid content increased. We found no increase in the proline content of the stressed plants. Finally, WILD PEARs are able to tolerate the drought for about 18 days, by decreasing some physiological parameters (gas exchange, xylem water potential, and relative water content), and by increasing some antioxidant systems like carotenoid. Complementary researchs conducted in the field and studies of gene and protein expressions are necessary before WILD PEAR could be used as a source of germplasm.

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APA: Copy

ZARAFSHAR, MEHRDAD, AKBARINIA, MOSLEM, HOSSEINI, SEYED MOHSEN, & RAHAIE, MEHDI. (2016). DROUGHT RESISTANCE OF WILD PEAR (PYRUS BOISSERIANA BUHSE.). JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), 69(1), 97-110. SID. https://sid.ir/paper/162955/en

Vancouver: Copy

ZARAFSHAR MEHRDAD, AKBARINIA MOSLEM, HOSSEINI SEYED MOHSEN, RAHAIE MEHDI. DROUGHT RESISTANCE OF WILD PEAR (PYRUS BOISSERIANA BUHSE.). JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2016;69(1):97-110. Available from: https://sid.ir/paper/162955/en

IEEE: Copy

MEHRDAD ZARAFSHAR, MOSLEM AKBARINIA, SEYED MOHSEN HOSSEINI, and MEHDI RAHAIE, “DROUGHT RESISTANCE OF WILD PEAR (PYRUS BOISSERIANA BUHSE.),” JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 69, no. 1, pp. 97–110, 2016, [Online]. Available: https://sid.ir/paper/162955/en

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