EFFECT OF DIFFERENT LEVELS IRRIGATION ON RADIATION ABSORPTION, RADIATION USE EFFICIENCY AND TOTAL DRY WEIGHT OF THREE MAIZE CULTIVARS

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GHOBADI R.; MONDANI F.; SHIRKHANI A.

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Journal: Applied Agricultural Research Year:2016 | Volume:29 | Issue:110 Page(s): 136-146

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Title

EFFECT OF DIFFERENT LEVELS IRRIGATION ON RADIATION ABSORPTION, RADIATION USE EFFICIENCY AND TOTAL DRY WEIGHT OF THREE MAIZE CULTIVARS

Author(s)

GHOBADI R. | MONDANI F. | SHIRKHANI A. | Issue Writer Certificate

Keywords

MAIZE CULTIVARSQ2

RADIATION ABSORPTIONQ2

RADIATION USE EFFICIENCYQ2

TOTAL DRY WEIGHTQ2

WATERDEFICITQ1

Abstract

Providing optimal conditions for use of radiation in order to produce assimilates the highest efficiency, is a necessary condition to achieve high production. Accordingly, this study was conducted aimed to assessment the importance of reducing the RADIATION ABSORPTION and RADIATION USE EFFICIENCY in the formation of dry weight, as well as evaluate changes RADIATION ABSORPTION and RADIATION USE EFFICIENCY during growth stages of MAIZE CULTIVARS under different irrigation levels. A split plots experiment performed based on randomized complete block design with three replications in 2010 at agricultural research station in Kermanshah province. Main plots were three levels, supplying 100, 80and 60 percent of total crop water requirement and sub-plots included MAIZE CULTIVARS (S.C704, S.C500 and S.C260). Results showed that S.C704 compare to S.C500 and S.C260 cultivars had more leaf area and dry weight at all levels of irrigation. In optimal irrigation, RADIATION USE EFFICIENCY during the reproductive phase of all three cultivars was more than vegetative phase. But in low irrigation, RADIATION USE EFFICIENCY during the reproductive phase was decreased compared vegetative phase. By increasing the severity of water deficit, reduced TOTAL DRY WEIGHT of all three cultivars. The interaction between irrigation and cultivar on RADIATION ABSORPTION and RADIATION USE EFFICIENCY was significant. For all cultivars in mild water deficit stress conditions role of reduced RADIATION USE EFFICIENCY (75.8%) was more than from role of RADIATION ABSORPTION (22%). While in severity stress of water deficit role of reduced RADIATION ABSORPTION (57.1%) was more than from role of RADIATION USE EFFICIENCY (42.8%) Therefore, by increasing the severity of water deficit, maize by reduce the absorption radiation and leaf area respond to this condition, however mild water deficit stress was reduced ability of plant to convert RADIATION ABSORPTION to dry matter. In addition, the negative effect of water deficit stress on the RADIATION USE EFFICIENCY of MAIZE CULTIVARS with increasing leaf age and entering to the reproductive phase more appeared.

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APA: Copy

GHOBADI, R., MONDANI, F., & SHIRKHANI, A.. (2016). EFFECT OF DIFFERENT LEVELS IRRIGATION ON RADIATION ABSORPTION, RADIATION USE EFFICIENCY AND TOTAL DRY WEIGHT OF THREE MAIZE CULTIVARS. APPLIED FIELD CROPS RESEARCH (PAJOUHESH & SAZANDEGI), 29(110), 136-146. SID. https://sid.ir/paper/214903/en

Vancouver: Copy

GHOBADI R., MONDANI F., SHIRKHANI A.. EFFECT OF DIFFERENT LEVELS IRRIGATION ON RADIATION ABSORPTION, RADIATION USE EFFICIENCY AND TOTAL DRY WEIGHT OF THREE MAIZE CULTIVARS. APPLIED FIELD CROPS RESEARCH (PAJOUHESH & SAZANDEGI)[Internet]. 2016;29(110):136-146. Available from: https://sid.ir/paper/214903/en

IEEE: Copy

R. GHOBADI, F. MONDANI, and A. SHIRKHANI, “EFFECT OF DIFFERENT LEVELS IRRIGATION ON RADIATION ABSORPTION, RADIATION USE EFFICIENCY AND TOTAL DRY WEIGHT OF THREE MAIZE CULTIVARS,” APPLIED FIELD CROPS RESEARCH (PAJOUHESH & SAZANDEGI), vol. 29, no. 110, pp. 136–146, 2016, [Online]. Available: https://sid.ir/paper/214903/en

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