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Journal of Agricultural Science and Technology، جلد ۹، شماره ۴، صفحات ۲۶۷-۲۷۷
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عنوان انگلیسی The Evaluation and Relationships of some Physiological Traits in Spring Safflower (Carthamus tinctorius L.) under Stress and Non-stress Water Regimes
چکیده انگلیسی مقاله Eight genotypes of spring safflower (Carthamus tinctorius L.) were evaluated for several physiological traits under stress and non-stress water regimes. Data were analyzed using principal factor analysis. The factor analysis technique extracted six factors under non-stress conditions. Six factors explained about 80% of the total variation, and only 40% of the variance was accounted for by the first two factors. Factors I and II were identified as water consumption, and water balance capacity, respectively. Similarly, seven factors were extracted under stress conditions, and 34% of the total variation was accounted for by the first two factors. Factors I and II were described as water conservation, and water holding capacity, respectively. Important physiological criteria were recognized by Fac-tors I and II in two experiments. Ultimately, initial water content (at stem elongation and grain filling stages), canopy temperature (at stem elongation and flowering stages), and leaf water potential (at flowering stage) under non-stress conditions, and canopy tempera-ture (at all stages), leaf area index (at stem elongation), and rate of water loss from ex-cised leaf (at grain filling) were the best criteria for screening suitable genotypes under the afore mentioned conditions.
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نویسندگان مقاله | J. Ashkani
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.


| H. Pakniyat
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.


| Y. Emam
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.


| M. T. Assad
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.


| M. J. Bahrani
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
نشانی اینترنتی http://journals.modares.ac.ir/browse.php?a_code=A-23-1000-3832&slc_lang=en&sid=23
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