Effects of plant density and chlormequat chloride (CCC) on morphological charactristics and grain yield of winter oilseed rape cv. Talayeh
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Abstract: (3877 Views) |
Increasing plant density is often associated with lodging, hence decreasing photosynthesis efficiency and grain yield. A field experiment was conducted to evaluate the effect of three plant densities 30, 50 and 70 p/m2 and three different chlormequat chloride concentrations: 0, 1.4 and 2.8 l/ha on some morphological characteristics and grain yield of winter rape seed (cv.Talayeh). The study was conducted under Bajgah agroclimatic conditions in a silty clay loam soil, Shiraz, Iran. The experimental design was a randomized complete block with four replications. The results indicated that, increasing plant density from 30 to 70 p/m2 caused a significant increase in plant height (p <5% ). When chlormequat chloride was applied at the rate of 1.4 l/ha at plant density of
70 p/m2 plant height was significantly decreased. Meanwhile the stem diameter and grain yield of plants treated with 2.8 l/ha chlormequat chloride at plant density of 70 p/m2 increased significantly. Although, the inter-nodes length and plant dry weight of the chlormequat -treated plants were smaller than control, their differences were not significant. It was conducted that under similar conditions to the present study, cv. Talayeh with plant density of 70 p/m2, and foliar application of chlormequat chloride at the rate of 2.8 l/ha can be used to achieve the highest grain yield. |
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Keywords: Plant density, Chlormequat chloride (CCC), Winter rape seed, Grain yield. |
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Full-Text [PDF 153 kb]
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Type of Study: Scientific & Research |
Subject:
Special Received: 2015/03/2 | Accepted: 2015/03/2 | Published: 2015/03/2
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