STUDY IN DENSITY STRESS IN SELECTION OF DROUGHT TOLERANT VARIETIES IN CORN (ZEA MAYS L.)

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MOGHADDAM A.; HADIZADEH H.

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Journal: Iranian Journal of Crop Sciences Year:2000 | Volume:2 | Issue:3 Page(s): 25-38

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Title

STUDY IN DENSITY STRESS IN SELECTION OF DROUGHT TOLERANT VARIETIES IN CORN (ZEA MAYS L.)

Author(s)

MOGHADDAM A. | HADIZADEH H. | Issue Writer Certificate

Keywords

CORNQ2

DENSITYQ2

STRESSQ2

STRESS SUSCEPTIBILITY INDEXQ4

STRESS TOLERANCE INDEXQ2

Abstract

In order to determine the relationship between high DENSITY STRESS and drought STRESS, an experiment was inducted in research field of SPII (Karaj) in 1997. The experimental design was strip plot with Randomized Complete Block arrangement and with three replications. Vertical factor was allocated to four levels of DENSITY including optimum DENSITY (i.e. 70,000 pl/ha), 100,000pl/ha, 140,000 pl/ha and 70,000 pl/ha+drought STRESS treatment at flowering stage (cut off two successing irrigations). Horizontal factor was six commercial and promising cultivars of CORN. The soil of experimental field was sandy loam with pH=8. For determination of relationship between DENSITY and drough STRESS, two indices i.e. STRESS susceptibility index (SSI) and STRESS tolerance index (STI) were estimated and simple and ranked correlation between them and yield were found. The highest plant DENSITY (140,000 plant/ha) showed the highest correlation coefficient with drought STRESS, and it seems that even higher densities could more effective in selection of tolerant cultivars to drought. STI was better related to drought and very high DENSITY (140,000 plants/ha) than SSI. However, it will be possible to remove the susceptible and select the tolerant cultivars by using SSI and STI in very high DENSITY (140,000 pl/ha or more). But it seems to be better to use high plant DENSITY only for elimination of drought susceptible cultivars, and for selection of tolerant cultivars more studies are needed to be done.

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APA: Copy

MOGHADDAM, A., & HADIZADEH, H.. (2000). STUDY IN DENSITY STRESS IN SELECTION OF DROUGHT TOLERANT VARIETIES IN CORN (ZEA MAYS L.). IRANIAN JOURNAL OF CROP SCIENCES, 2(3), 25-38. SID. https://sid.ir/paper/57125/en

Vancouver: Copy

MOGHADDAM A., HADIZADEH H.. STUDY IN DENSITY STRESS IN SELECTION OF DROUGHT TOLERANT VARIETIES IN CORN (ZEA MAYS L.). IRANIAN JOURNAL OF CROP SCIENCES[Internet]. 2000;2(3):25-38. Available from: https://sid.ir/paper/57125/en

IEEE: Copy

A. MOGHADDAM, and H. HADIZADEH, “STUDY IN DENSITY STRESS IN SELECTION OF DROUGHT TOLERANT VARIETIES IN CORN (ZEA MAYS L.),” IRANIAN JOURNAL OF CROP SCIENCES, vol. 2, no. 3, pp. 25–38, 2000, [Online]. Available: https://sid.ir/paper/57125/en

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