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
1385
7
1
gregorian
2006
10
1
8
4
online
1
fulltext
en
Differences between Water Extraction Patterns of Three Wheat (Triticum aestivum L.) Cultivars at Different
Soil Depths under Gradually Downward
Soil Drying Conditions
In drought prone environments wheat crop growth and production depends strongly on the water stored in the soil before anthesis and, although some water remains in the soil after harvest, plants experience water deficit. In order to investigate whether water ex-traction patterns, as a plant feature, have a regulating effect on the amount of water used by them at different soil depths, three wheat cultivars (Asakaze, BR9, BR10) differing in origin and drought resistance in terms of grain yield were grown in pots under gradually downward soil drying conditions. The total water used by cultivars was the same up to the post anthesis stage of growth when plants were harvested. However, Asakaze used more water from emergence to the beginning of the stem elongation period of growth and BR9 used more after that period up to the post anthesis stage. Cultivars showed significant dif-ferences in root length at different soil depths. Asakaze was predicted to use more water from topsoil layers compared to BR9 and BR10. On the other hand, BR9 was expected to use more water from deep layers in comparison to Asakaze. These were suggested to be the effect of the higher root density of each cultivar in the top and deep soil layers. It is also suggested that higher root length density in deep soil layers could be targeted as a fa-vorable trait for breeding wheat Cultivars, which are growing under gradually downward soil drying conditions.
Wheat,Root,Water extraction pattern
271
279
http://jast.modares.ac.ir/browse.php?a_code=A-10-1000-4013&slc_lang=en&sid=23
A. A.
Maghsoudi Moud
A. A.
Maghsoudi Moud
100319475328460045399
100319475328460045399
Yes
Department of Agronomy and Plant Breeding, College of Agriculture, Shahid Bahonar University, Kerman,
Islamic Republic of Iran.
Department of Agronomy and Plant Breeding, College of Agriculture, Shahid Bahonar University, Kerman,
Islamic Republic of Iran.
T.
Yamaghishi
T.
Yamaghishi
100319475328460045400
100319475328460045400
No
Department of Agricultural and Environmental Biology, University of Tokyo, Tokyo 113, Japan.
Department of Agricultural and Environmental Biology, University of Tokyo, Tokyo 113, Japan.