Journal of Agricultural Science and Technology
Journal of Agricultural Science and Technology
JAST
Agriculture
http://jast.modares.ac.ir
1
admin
1680-7073
2345-3737
10.22034/jast
en
jalali
1386
7
1
gregorian
2007
10
1
9
4
online
1
fulltext
en
The Evaluation and Relationships of some Physiological
Traits in Spring Safflower (Carthamus tinctorius L.)
under Stress and Non-stress Water Regimes
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.
Drought resistance,Physiological traits,Principal factor analysis (PFA),Safflower
267
277
http://jast.modares.ac.ir/browse.php?a_code=A-10-1000-3832&slc_lang=en&sid=23
J.
Ashkani
J.
Ashkani
100319475328460045292
100319475328460045292
No
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
H.
Pakniyat
H.
Pakniyat
100319475328460045293
100319475328460045293
Yes
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
Y.
Emam
Y.
Emam
100319475328460045294
100319475328460045294
No
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
M. T.
Assad
M. T.
Assad
100319475328460045295
100319475328460045295
No
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
M. J.
Bahrani
M. J.
Bahrani
100319475328460045296
100319475328460045296
No
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,
Islamic Republic of Iran.