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Journal of Zhejiang University SCIENCE B 2011 Vol.12 No.1 P.72-82

10.1631/jzus.B0900097


Effect of terminal locations of pods on biomass production and 13C partitioning in a fasciated stem soybean Shakujo


Author(s):  Kyosuke Yamada, Aoi Sasakura, Kiyoshi Nishiwaki, Hany A. El-Shemy, Pravat K. Mohapatra, Nguyen T. Nguyen, Hideki Kurosaki, Syunsuke Kanai, Junki Ito, Kounosuke Fujita

Affiliation(s):  Department of Environmental Dynamics and Management, Graduate School of Biosphere Sciences, Hiroshima University, Higashi-Hiroshima 739-0046, Japan, Nagano Chushin Agricultural Experimental Station, Shiojiri 399-0700, Japan, Faculty of Agriculture Research Park (FARP) and Biochemistry Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt, School of Life Sciences, Sambalpur University, Jyoti Vihar, Sambalpur Orissa, India, Hokkaido Prefectural Kitami Agricultural Experiment Station, Tokoro, Hokkaido 099-1400, Japan, Hiroshima Prefectural Agriculture Research Center, Hara, Hachihonmatsu, Higashi-Hiroshima 739-0151, Japan

Corresponding email(s):   helshemy@hotmail.com, huzita.kounosuke@cameo.plala.or.jp

Key Words:  Fasciated stem, Grain yield, Photosynthesis, Photosynthate partitioning, Population density, Soybean, Source-sink unit


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Kyosuke Yamada, Aoi Sasakura, Kiyoshi Nishiwaki, Hany A. El-Shemy, Pravat K. Mohapatra, Nguyen T. Nguyen, Hideki Kurosaki, Syunsuke Kanai, Junki Ito, Kounosuke Fujita. Effect of terminal locations of pods on biomass production and 13C partitioning in a fasciated stem soybean Shakujo[J]. Journal of Zhejiang University Science B, 2011, 12(1): 72-82.

@article{title="Effect of terminal locations of pods on biomass production and 13C partitioning in a fasciated stem soybean Shakujo",
author="Kyosuke Yamada, Aoi Sasakura, Kiyoshi Nishiwaki, Hany A. El-Shemy, Pravat K. Mohapatra, Nguyen T. Nguyen, Hideki Kurosaki, Syunsuke Kanai, Junki Ito, Kounosuke Fujita",
journal="Journal of Zhejiang University Science B",
volume="12",
number="1",
pages="72-82",
year="2011",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.B0900097"
}

%0 Journal Article
%T Effect of terminal locations of pods on biomass production and 13C partitioning in a fasciated stem soybean Shakujo
%A Kyosuke Yamada
%A Aoi Sasakura
%A Kiyoshi Nishiwaki
%A Hany A. El-Shemy
%A Pravat K. Mohapatra
%A Nguyen T. Nguyen
%A Hideki Kurosaki
%A Syunsuke Kanai
%A Junki Ito
%A Kounosuke Fujita
%J Journal of Zhejiang University SCIENCE B
%V 12
%N 1
%P 72-82
%@ 1673-1581
%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B0900097

TY - JOUR
T1 - Effect of terminal locations of pods on biomass production and 13C partitioning in a fasciated stem soybean Shakujo
A1 - Kyosuke Yamada
A1 - Aoi Sasakura
A1 - Kiyoshi Nishiwaki
A1 - Hany A. El-Shemy
A1 - Pravat K. Mohapatra
A1 - Nguyen T. Nguyen
A1 - Hideki Kurosaki
A1 - Syunsuke Kanai
A1 - Junki Ito
A1 - Kounosuke Fujita
J0 - Journal of Zhejiang University Science B
VL - 12
IS - 1
SP - 72
EP - 82
%@ 1673-1581
Y1 - 2011
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B0900097


Abstract: 
This study addresses the hypothesis that stagnation of soybean yield on the farm can be improved by selection of a physiological trait favoring carbon assimilate partitioning to terminally placed pods versus genotypes having axillary pods at close plant spacing. 13C was fed to source-sink units comprising a leaf, axillary/terminal pods, and petioles at upper and lower positions of the stem axis in two soybean cultivars, namely Shakujo and Enrei, at different densities of populations. The cultivars differ significantly in architecture, Shakujo bearing a few hundreds of pods in close succession to one another in a terminally placed raceme, in contrast to Enrei having axillary racemes. Pod yield per plant was higher in Enrei than in Shakujo at low density, but Shakujo out-yielded Enrei at close spacing. population density decreased yield per plant and altered the pattern of assimilate partitioning significantly within the plants for both varieties. At high density more assimilates moved to the upper parts at the cost of the lower parts. The terminally placed pods of Shakujo were advantaged to receive assimilates under density stress. No benefit was accrued to pod filling of Enrei, however, under this condition.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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