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Investigation the Effect of Water Deficit on Grain Yield and some Morphophysiological Traits of Promising Sunflower Cultivars
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Mohammad Mahdi Motiei   , Alireza Sirousmehr * , Isa Khamari , Ahmad Naderi |
| Associate Professor of Department of Agronomy, Zabol University, Zabol, Iran. |
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Abstract: (1120 Views) |
One of the most important farm managements to achieve optimal plant growth conditions and proper yield is to provide sufficient water so that the plant does not suffer from moisture tension in the critical stages of growth. The present study was conducted as split plots in a randomized complete block design with 4 replications in Ahvaz Agricultural Research Center during 2016-2017. Irrigation regimes after evaporation of 50, 70 and 90 millimeter from class A evaporation pan were placed in the main plots and six cultivars of Progress, Farrokh, Barzegar, Record, Azargol and Lakomka were placed in the sub-plots. The results showed that plant height, head diameter, one-thousand seed weight, oil percentage, grain yield, biological yield, photosynthetic pigments decreased significantly with increasing irrigation regime from 50 to 90 millimeter evaporation from class A evaporation pan and proline and Malondialdehyde traits increased.Also, the tripartite effects of year, irrigation regime and cultivar for one-thousand grain weight, grain yield and proline were significant. The highest one-thousand seed weight (80.3 gram) and grain yield (2529 kilogram per hectare) was obtained from the treatment combination of 50 millimeter evaporation from the evaporation pan and the Record cultivar during two years of experiment and the highest proline concentration (20.8 milligram per gram fresh leaf weight) in the treatment composition of 90 millimeter evaporation from the evaporation pan and Record cultivar in two years. Therefore, according to the results for Ahvaz region, Record cultivar and irrigation of 50 millimeter from the evaporation pan is recommended.
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| Keywords: Proline, Oil percentage, Record cultivar and Malondialdehyde. |
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Full-Text [PDF 701 kb]
(1750 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2022/01/5 | Accepted: 2021/12/31 | Published: 2021/12/31
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