TRENDS OF TOTAL NONSTRUCTURAL CARBOHYDRATES DURING GROWTH DEVELOPMENT IN THREE GRASSES OF GOLESTAN NATIONAL PARK

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HOUSHMAND MOUYED S.; MESDAGHI M.; SADEGHIPOUR H.R.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2009 | Volume:16 | Issue:3 Page(s): 193-201

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Title

TRENDS OF TOTAL NONSTRUCTURAL CARBOHYDRATES DURING GROWTH DEVELOPMENT IN THREE GRASSES OF GOLESTAN NATIONAL PARK

Author(s)

HOUSHMAND MOUYED S. | MESDAGHI M. | SADEGHIPOUR H.R. | Issue Writer Certificate

Keywords

AGROPYRON SPP.Q3

TOTAL NONSTRUCTURAL CARBOHYDRATEQ3

PHONOLOGICAL STAGESQ3

Abstract

A suitable grazing system should be arranged based on the physiological characteristic of range plants. An investigation was conducted to determine the trend of changes in TOTAL NONSTRUCTURAL CARBOHYDRATE reserves during growth development in three grasses of crested wheatgrass (Agropyron cristatum), pubscent wheatgrass (Agropyron trichophorum), and intermedia wheatgrass (Agropyron intermedium) at Golestan National Park. The mean annual temperature and mean annual precipitation of the study area are 9oC, and is 304 mm respectively. The elevation of study area is 1660 m. To relate carbohydrate reserves to the rate and stages of growth, leaf length, height, and the pheological stages of 10 plants of each species were measured during growth period. Then, TOTAL NONSTRUCTURAL CARBOHYDRATEs (TNC) in the storage organs of root, crown, and rhizome were determined by using Anthrone reagent. Results showed that the concentrations of TNC in storage organs were significantly different between three species (P<0.05). The changes of TNC in different PHONOLOGICAL STAGES were significantly different in storage organs of three species (P<0.05), with exception in the root of A. trichophorum. With the progression of growth, TNC in the crown of A. cristatum and in the rhizome of A. intermedium indicated increasing trend. The concentration of TNC in crown of A. cristatum and in root and rhizome of A. intermedium were minimum at vegetative growth stage. But such reduction happened for crown of A. trichophorum during head stage. The reduction of TNC was occurred in certain PHONOLOGICAL STAGES, especially in flowering and seed ripening which may be related to environmental factors. In stages of low carbohydrate reserves, the species may not be able to recover the loss of photosynthetic tissue. Therefore, variation in carbohydrate reserve cycles of species indicate their different responses to frequency, intensity, and season of defoliation.

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APA: Copy

HOUSHMAND MOUYED, S., MESDAGHI, M., & SADEGHIPOUR, H.R.. (2009). TRENDS OF TOTAL NONSTRUCTURAL CARBOHYDRATES DURING GROWTH DEVELOPMENT IN THREE GRASSES OF GOLESTAN NATIONAL PARK. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 16(3), 193-201. SID. https://sid.ir/paper/9023/en

Vancouver: Copy

HOUSHMAND MOUYED S., MESDAGHI M., SADEGHIPOUR H.R.. TRENDS OF TOTAL NONSTRUCTURAL CARBOHYDRATES DURING GROWTH DEVELOPMENT IN THREE GRASSES OF GOLESTAN NATIONAL PARK. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2009;16(3):193-201. Available from: https://sid.ir/paper/9023/en

IEEE: Copy

S. HOUSHMAND MOUYED, M. MESDAGHI, and H.R. SADEGHIPOUR, “TRENDS OF TOTAL NONSTRUCTURAL CARBOHYDRATES DURING GROWTH DEVELOPMENT IN THREE GRASSES OF GOLESTAN NATIONAL PARK,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 16, no. 3, pp. 193–201, 2009, [Online]. Available: https://sid.ir/paper/9023/en

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