EFFECT OF SALINITY AND WATER DEFICIT STRESS ON SEED GERMINATION

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KHALESROU SH.; AGHA ALIKHANI M.

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Journal: Year:2008 | Volume:20 | Issue:4 (77 IN AGRONOMY AND HORTICULTURE) Page(s): 153-163

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Title

EFFECT OF SALINITY AND WATER DEFICIT STRESS ON SEED GERMINATION

Author(s)

KHALESROU SH. | AGHA ALIKHANI M. | Issue Writer Certificate

Keywords

SALINITYQ2

WATER DEFICITQ2

STRESSQ2

GERMINATIONQ3

FORAGE SORGHUMQ3

PEARL MILLETQ3

Abstract

Evaluation of crop tolerance to environmental STRESSes during seed GERMINATION and seedling emergence is a main measure to choose them for cropping in different circumstances. Since common investigations in field conditions are time consuming and influenced by many companion variables of soil, climate and agricultural practices, So a fast and precise evaluation of crop response to STRESS would be achieved using an experiment in controlled environment conditions. In order to study the seed GERMINATION responses of FORAGE SORGHUM (Sorghum bicolor L. cultivar speedfeed) and PEARL MILLET (Pennisetum americanum L. cultivar nutrifeed) to SALINITY and WATER DEFICIT STRESS, two private experiments were conducted. Factorial experiment based on completely randomized design with two replications was used for both trials. In the first experiment, effect of NaCl derived SALINITY STRESS levels (0, 4.4, 9.2, 13.2, 17.6, 22, 26.5, 33, 40, 44.2 dS/m) and in the second trial effect of PEG- 6000 derived WATER DEFICIT levels (-0.1, -0.2, -0.3, -0.4, -0.5, -0.6, -0.7, -0.8, -0.9 and –1.0 MPa) on GERMINATION indices of sorghum and millet seeds in Petri dishes via between paper method were investigated. Different traits including GERMINATION rate, seed vigor, radicle and stem length and dry weights were measured. Results showed that in compare to millet, sorghum seeds were more tolerant to SALINITY and WATER DEFICIT STRESS, in such a manner GERMINATION rate and seed vigor of sorghum was more than millet in the same STRESS intensity. Although sever STRESSes (SALINITY, till 9.2 dS/m and WATER DEFICIT till -0.4 MPa) had no significant effect on GERMINATION rate, but in more intensified STRESS levels, stem and radicle length and dry weights significantly decreased. According to positive and the highest correlation(r =0.98) between GERMINATION rate and GERMINATION percent, it could be stated that genotypes selection based on high GERMINATION percent will caused to fast GERMINATION and better seedling establishment. Also positive correlation(r = 0.97) between root dry weight and stem dry weight indicate that more dry matter accumulation in radicles led to more water and nutrient uptake from the solution and increased stem growth and dry weight.

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APA: Copy

KHALESROU, SH., & AGHA ALIKHANI, M.. (2008). EFFECT OF SALINITY AND WATER DEFICIT STRESS ON SEED GERMINATION. PAJOUHESH-VA-SAZANDEGI, 20(4 (77 IN AGRONOMY AND HORTICULTURE)), 153-163. SID. https://sid.ir/paper/20029/en

Vancouver: Copy

KHALESROU SH., AGHA ALIKHANI M.. EFFECT OF SALINITY AND WATER DEFICIT STRESS ON SEED GERMINATION. PAJOUHESH-VA-SAZANDEGI[Internet]. 2008;20(4 (77 IN AGRONOMY AND HORTICULTURE)):153-163. Available from: https://sid.ir/paper/20029/en

IEEE: Copy

SH. KHALESROU, and M. AGHA ALIKHANI, “EFFECT OF SALINITY AND WATER DEFICIT STRESS ON SEED GERMINATION,” PAJOUHESH-VA-SAZANDEGI, vol. 20, no. 4 (77 IN AGRONOMY AND HORTICULTURE), pp. 153–163, 2008, [Online]. Available: https://sid.ir/paper/20029/en

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