DRY MATTER ACCUMULATION AND REMOBILIZATION IN BREAD WHEAT CULTIVARS UNDER WATER STRESS DURING PRE- AND POST-ANTHESIS STAGES IN FIELD CONDITIONS

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GHODSI M.; JALAL KAMALI M.R.; CHAICHI M.R.; MAZAHERI D.

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Journal: Iranian Journal of Field Crops Research Year:2004 | Volume:1 | Issue:2 Page(s): 205-216

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Information Journal Paper

Title

DRY MATTER ACCUMULATION AND REMOBILIZATION IN BREAD WHEAT CULTIVARS UNDER WATER STRESS DURING PRE- AND POST-ANTHESIS STAGES IN FIELD CONDITIONS

Author(s)

GHODSI M. | JALAL KAMALI M.R. | CHAICHI M.R. | MAZAHERI D. | Issue Writer Certificate

Keywords

WATER STRESSQ3

DEVELOPMENTAL STAGESQ4

REMOBILIZATIONQ3

DRY MATTER ACCUMULATIONQ2

WHEAT CULTIVARSQ2

YIELDQ2

Abstract

In order to study DRY MATTER ACCUMULATION in different DEVELOPMENTAL STAGES and REMOBILIZATION in bread WHEAT CULTIVARS under WATER STRESS, a field experiment was conducted using a split plot design based on a complete randomized block design with 3 replications for two years (2000-2002) in Torogh Agricultural Research Station (Mashhad, Iran). Main plots were allocated to 7 levels of WATER STRESS treatments namely D1: full irrigation, D2: WATER STRESS from one leaf stage to double ridge (floral initiation), and in other treatments WATER STRESS and prevention of precipitation from D3: One leaf stage to double ridge, D4: double ridge stage to early stem elongation, D5: early stem elongation stage to emergence of flag leaf, D6: emergence of flag leaf stage to anthesis and D7: anthesis stage to late of grain filling (soft dough), respectively. Four bread WHEAT CULTIVARS (Roshan, Ghods, Marvdasht and Chamran) were assigned to sub plots. Results of combined analysis showed that, biological YIELD, grain YIELD, spike weight at anthesis, harvest index, accumulation of dry matter in different DEVELOPMENTAL STAGES, amount of remobilized dry matter, REMOBILIZATION efficiency, REMOBILIZATION percentage, duration of grain filling and plant height was significantly (p<0.05) affected by WATER STRESS treatments. Biological and grain YIELD, accumulation of dry matter in different DEVELOPMENTAL STAGES, spike weight at anthesis, harvest index and plant height, was decreased due to WATER STRESS at stem elongation stage (D5). WATER STRESS decreased dry matter and limited source before anthesis (D5 and D6), but after anthesis (D7) decreased amount of remobilized dry matter and REMOBILIZATION efficiency about 261 mg/plant and %33.9 in comparison to D1 treatment, respectively. In severe WATER STRESS treatments (D5 and D7) REMOBILIZATION percentage were increased in comparison to D1, D2 and D3 treatments. In addition, D7 treatment, affected canopy temperature depression (CTD). Plant height and amount of remobilized dry matter of Roshan was relatively high. Also, Chamran had relatively higher grain YIELD and REMOBILIZATION percentage and was relatively early maturing.

Cites

References

STUDY ON DROUGHT TOLERANCE OF BREAD WHEAT CULTIVARS IN COLD REGIONS OF IRAN

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APA: Copy

GHODSI, M., JALAL KAMALI, M.R., CHAICHI, M.R., & MAZAHERI, D.. (2004). DRY MATTER ACCUMULATION AND REMOBILIZATION IN BREAD WHEAT CULTIVARS UNDER WATER STRESS DURING PRE- AND POST-ANTHESIS STAGES IN FIELD CONDITIONS. IRANIAN JOURNAL OF FIELD CROPS RESEARCH, 1(2), 205-216. SID. https://sid.ir/paper/119367/en

Vancouver: Copy

GHODSI M., JALAL KAMALI M.R., CHAICHI M.R., MAZAHERI D.. DRY MATTER ACCUMULATION AND REMOBILIZATION IN BREAD WHEAT CULTIVARS UNDER WATER STRESS DURING PRE- AND POST-ANTHESIS STAGES IN FIELD CONDITIONS. IRANIAN JOURNAL OF FIELD CROPS RESEARCH[Internet]. 2004;1(2):205-216. Available from: https://sid.ir/paper/119367/en

IEEE: Copy

M. GHODSI, M.R. JALAL KAMALI, M.R. CHAICHI, and D. MAZAHERI, “DRY MATTER ACCUMULATION AND REMOBILIZATION IN BREAD WHEAT CULTIVARS UNDER WATER STRESS DURING PRE- AND POST-ANTHESIS STAGES IN FIELD CONDITIONS,” IRANIAN JOURNAL OF FIELD CROPS RESEARCH, vol. 1, no. 2, pp. 205–216, 2004, [Online]. Available: https://sid.ir/paper/119367/en

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