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Abstract Detail


Physiological Section

Shirani Rad, Amirhossein [1], Daneshian, Jahanfar [2].

Study of Drought Stress at Different Developmental Stages of Rapeseed Cultivars.

THE objective of this study was to study water deficit effect at developmental stages of rapeseed. Six water deficit levels including of normal irrigation, no irrigation from germination to rosset, no irrigation at stem elongation, no irrigation at flowering, no irrigation at silque formation and no irrigation at seed filling as main plot and three cultivar including of Hyola 308, PF7045.91 and SLM046 as sub plot were arranged in a split plot design based on RCBD.
Seed yield, phenological, morphological and agronomic characteristics were recorded two years. The result showed that irrigation had significant effect on yield and yield component at 1% probability. When plants were exposed on water deficit at flowering stage, the silques number were decreased, significantly. However, no irrigation at stem elongation had no effect on yield and yield components. There are high correlation between yield and silque number and total dry matter. Hyola 308 in normal irrigation (4556 kg.ha-1)and SLM046 at no irrigation at flowering (1895 Kg/ha) had the highest and the lowest seed yield, respectively. PF7045.91 in no irrigation from germination to rosset and Hyola 308 in no irrigation at stem elongation, no irrigation at silque formation and no irrigation at filling stage had the highest seed yield in comparison with other cultivars.


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1 - Seed and Plant Improvement Institute, Oil Seed Crop Research Departmen, Seed and Plant Improvement Institute, Oil Seed Crop Research Department , Mahdasht Ave. , Karaj, Iran., Karaj,, Tehran, 31585-4119, Iran
2 - Seed and plant Improvement Institute, Oil Seed plant Crops, : Seed and Plant Improvement Institute, Oil Seed Crop Research Department , Mahdasht Ave. , Karaj, Iran., Karaj,, Tehran, 31585-4119, Iran

Keywords:
drought.

Presentation Type: Oral Paper:Papers for Sections
Session: 7-3
Location: 134/Performing Arts Center
Date: Monday, July 31st, 2006
Time: 9:00 AM
Abstract ID:707


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