EFFECT OF NITROGEN AND DROUGHT STRESS ON ACCUMULATION OF PRE-ANTHESIS NONSTRUCTURAL CARBOHYDRATES AND REMOBILIZATION TO THE GRAIN OF BARLEY

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BARADARAN FIROUZ ABADI M.; SHAKIBA MOHAMMAD REZA; RAHIMZADEH KHOUEI F.; TOURCHI MAHMOUD; TABATABAEI S.J.

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Journal: JOURNAL OF AGRICULTURAL KNOWLEDGE Year:2007 | Volume:16 | Issue:4 Page(s): 59-71

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Title

EFFECT OF NITROGEN AND DROUGHT STRESS ON ACCUMULATION OF PRE-ANTHESIS NONSTRUCTURAL CARBOHYDRATES AND REMOBILIZATION TO THE GRAIN OF BARLEY

Author(s)

Keywords

BARLEYQ2

DROUGHT STRESSQ2

NITROGENQ2

NONSTRUCTURAL CARBOHYDRATEQ3

REMOBILIZATIONQ2

Abstract

Remobilization of internal resources is an important mechanism enabling plants to be partly independent of environmental conditions and external nutrient availability. Therefore, in this study the enhancement of NONSTRUCTURAL CARBOHYDRATE REMOBILIZATION of two BARLEY (Hordeum vu/gore L.) cultivars, Walfajr and Reihan, was assessed by pre-anthesis NITROGEN usage and a controlled DROUGHT STRESS during grain filling stage. The experiment was conducted as factorial split plot based on randomized complete blocks in both pot and field experiments. Three levels of NITROGEN (60, 120 and 180 kgha-1) and three irrigation levels (>80, 55-65 and 35-45 percent of field capacity) were applied at heading and 10 days after anthesis respectively. Soil water was controlled by pot weighing and determination of soil moisture, in pot and field experiments, respectively. Maximum NONSTRUCTURAL CARBOHYDRATE (NSC) at anthesis, NSC residue at maturity, NSC translocation, and NSC translocation efficiency measured in leaf, sheath, peduncle, two internodes under peduncle, and stem base. Then, the contribution of these parts to grain filling was determined. Pre-an thesis carbohydrate reserves were increased in the high NITROGEN condition, but NSC reserves translocation, and translocation efficiency from anthesis to maturity were decreased. In severe soil drying condition, NSC reserves translocation and REMOBILIZATION efficiency were increased. Two internodes under peduncle and stem base had greatest carbohydrate translocation efficiency. Evaluation of each part indicated that NSC reserves in two internodes under peduncle had the highest contribution to grain filling. No. considerable differences were observed between the two, cultivars (Walfajr and Reihan).

Cites

EVALUATION OF DROUGHT TOLERANCE IN BREAD WHEAT LINES USING DROUGHT TOLERANCE INDICES

References

EFFECTS OF SOURCE STRENGTH REDUCTION ON RETRANSLOCATION OF STEM WATER-SOLUBLE CARBOHYDRATES IN THREE BARLEY CULTIVARS

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APA: Copy

BARADARAN FIROUZ ABADI, M., SHAKIBA, MOHAMMAD REZA, RAHIMZADEH KHOUEI, F., TOURCHI, MAHMOUD, & TABATABAEI, S.J.. (2007). EFFECT OF NITROGEN AND DROUGHT STRESS ON ACCUMULATION OF PRE-ANTHESIS NONSTRUCTURAL CARBOHYDRATES AND REMOBILIZATION TO THE GRAIN OF BARLEY. JOURNAL OF AGRICULTURAL KNOWLEDGE, 16(4), 59-71. SID. https://sid.ir/paper/28905/en

Vancouver: Copy

BARADARAN FIROUZ ABADI M., SHAKIBA MOHAMMAD REZA, RAHIMZADEH KHOUEI F., TOURCHI MAHMOUD, TABATABAEI S.J.. EFFECT OF NITROGEN AND DROUGHT STRESS ON ACCUMULATION OF PRE-ANTHESIS NONSTRUCTURAL CARBOHYDRATES AND REMOBILIZATION TO THE GRAIN OF BARLEY. JOURNAL OF AGRICULTURAL KNOWLEDGE[Internet]. 2007;16(4):59-71. Available from: https://sid.ir/paper/28905/en

IEEE: Copy

M. BARADARAN FIROUZ ABADI, MOHAMMAD REZA SHAKIBA, F. RAHIMZADEH KHOUEI, MAHMOUD TOURCHI, and S.J. TABATABAEI, “EFFECT OF NITROGEN AND DROUGHT STRESS ON ACCUMULATION OF PRE-ANTHESIS NONSTRUCTURAL CARBOHYDRATES AND REMOBILIZATION TO THE GRAIN OF BARLEY,” JOURNAL OF AGRICULTURAL KNOWLEDGE, vol. 16, no. 4, pp. 59–71, 2007, [Online]. Available: https://sid.ir/paper/28905/en

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