EFFECTS OF WATER STRESS IN GERMINATION AND VEGETATIVE GROWTH STAGES, SOME PURE LINES OF WHEAT UNDER DIFFERENT WATER LEVELS

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NABIZADEH E.; HEYDARI SHARIFABAD H.; NOURMOHAMMADI GHORBAN

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Journal: Year:2007 | Volume:13 | Issue:3 Page(s): 661-678

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Title

EFFECTS OF WATER STRESS IN GERMINATION AND VEGETATIVE GROWTH STAGES, SOME PURE LINES OF WHEAT UNDER DIFFERENT WATER LEVELS

Author(s)

NABIZADEH E. | HEYDARI SHARIFABAD H. | NOURMOHAMMADI GHORBAN | Issue Writer Certificate

Keywords

GERMINATIONQ3

DROUGHT STRESSQ2

TOLERANCE TO DROUGHTQ3

PURE DOUBLED-HAPLOID LINES OF WHEATQ3

TOLERANCE TO DROUGHTQ2

CONTENTS OF RWCQ2

WATER POTENTIAL OF LEAFQ2

METABOLITES OF COMPATIBILITYQ2

PROLINEQ2

AND SOLUBLE CARBOHYDRATESQ2

Abstract

In order to evaluate the effects of water stress in GERMINATION and vegetative growth stages, some pure lines of wheat under water treatments were studied in two separate experiments. In GERMINATION stage 40 lines of -1.6, -1.2, -0.8 and 0 MP were evaluated in the form of CRB base design in three replications. The treatments were applied during 7 days under 25 C. The following traits were measured: final percentage of GERMINATION, length of stemlet and rootlet, dry weight of rootlet and stemlet of seedlings. Then in order to study the accumulation of growth regulator in leaves on 8 lines of wheat obtained from the first experiment in comparison to two commercial lines (Azar2 and Zarrin); water stress was applied under 4 levels of 100%, 75%,50% and 25% of agronomic soil capacity. The results showed that water stress had led to decrease of GERMINATION percentage, length of rootlet and stemlet and the dry weight of rootlet and stemlet. The lines were divided into 3 groups: tolerant (15 and 28), semi-tolerant (19 and 17) and sensitive (16 and most of the lines). The lines tolerant to water stress had more length and dry weight of rootlet and stemle than the sensitive lines. Under the conditions of water stress in vase a decrease was observed in water potential and RWC. Decrease in the amount of RWC was parallel with the decrease in the amount of water potential so that the least decrease of RWC and water potential occurred in the treatment 25% of agronomic capacity in Azar2 and the line no 15and the mostdecrease belonged to the line 36 and Zarrin.Accumulation of praline AND SOLUBLE CARBOHYDRATES had negative and significant correlation with plant water potential and RWC. The most accumulation of praline belonged to the line 16 while the most accumulation of soluble carbohydrates belonged to Azar2 and the least one belonged to the line no 36. So, there is a relation between the accumulation of osmotic regulator metabolites and water potential in tolerant lines.

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APA: Copy

NABIZADEH, E., HEYDARI SHARIFABAD, H., & NOURMOHAMMADI, GHORBAN. (2007). EFFECTS OF WATER STRESS IN GERMINATION AND VEGETATIVE GROWTH STAGES, SOME PURE LINES OF WHEAT UNDER DIFFERENT WATER LEVELS. JOURNAL OF AGRICULTURAL SCIENCES, 13(3), 661-678. SID. https://sid.ir/paper/7727/en

Vancouver: Copy

NABIZADEH E., HEYDARI SHARIFABAD H., NOURMOHAMMADI GHORBAN. EFFECTS OF WATER STRESS IN GERMINATION AND VEGETATIVE GROWTH STAGES, SOME PURE LINES OF WHEAT UNDER DIFFERENT WATER LEVELS. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2007;13(3):661-678. Available from: https://sid.ir/paper/7727/en

IEEE: Copy

E. NABIZADEH, H. HEYDARI SHARIFABAD, and GHORBAN NOURMOHAMMADI, “EFFECTS OF WATER STRESS IN GERMINATION AND VEGETATIVE GROWTH STAGES, SOME PURE LINES OF WHEAT UNDER DIFFERENT WATER LEVELS,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 3, pp. 661–678, 2007, [Online]. Available: https://sid.ir/paper/7727/en

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