TY - JOUR
T1 - Effect of waterlogging during vegetative stage on growth and yield in supernodulating soybean cultivar Sakukei 4
AU - Matsunami, Toshinori
AU - Jung, Gun Ho
AU - Oki, Yukihiko
AU - Kokubun, Makie
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007
Y1 - 2007
N2 - The supernodulating soybean cultivar Sakukei 4 was previously characterized by its superior capabilities of nitrogen (N) fixation and photosynthesis, and was expected to be high yielding. Since the N absorption by Sakukei 4 is largely dependent on N fixation, it may be strongly affected by waterlogging during the vegetative stage, which occurs frequently in major soybean producing areas. In this study, we investigated the reduced growth and yield resulting from waterlogging during vegetative stage and the subsequent recovery in Sakukei 4, in comparison with those in the normally-nodulating cultivar Enrei and non-nodulating genotype En1282. Under the field conditions, the reduction of growth and yield by waterlogging was greatest in En1282 among the three genotypes, indicating that capability of N fixation is essential for the recovery from waterlogging-induced injury. The waterlogging-induced yield reduction in Sakukei 4 resembled that in Enrei, although growth reduction was greater in Sakukei 4 than in Enrei. Irrespective of cultivar, the yield was associated more closely with the crop growth rate (CGR) during the post-treatment stage than with that during the waterlogging treatment. In the pot experiments, yields positively correlated with both above- and underground plant parts irrespective of cultivar, not significantly, but significantly with root dry weights in Enrei and with nodule dry weights in Sakukei 4. These results indicate that Sakukei 4 exhibits a marked decrease in dry matter production by waterlogging, but yield decrease is compensated to a level similar to that of Enrei because of its enhanced nodule growth during the recovery stage.
AB - The supernodulating soybean cultivar Sakukei 4 was previously characterized by its superior capabilities of nitrogen (N) fixation and photosynthesis, and was expected to be high yielding. Since the N absorption by Sakukei 4 is largely dependent on N fixation, it may be strongly affected by waterlogging during the vegetative stage, which occurs frequently in major soybean producing areas. In this study, we investigated the reduced growth and yield resulting from waterlogging during vegetative stage and the subsequent recovery in Sakukei 4, in comparison with those in the normally-nodulating cultivar Enrei and non-nodulating genotype En1282. Under the field conditions, the reduction of growth and yield by waterlogging was greatest in En1282 among the three genotypes, indicating that capability of N fixation is essential for the recovery from waterlogging-induced injury. The waterlogging-induced yield reduction in Sakukei 4 resembled that in Enrei, although growth reduction was greater in Sakukei 4 than in Enrei. Irrespective of cultivar, the yield was associated more closely with the crop growth rate (CGR) during the post-treatment stage than with that during the waterlogging treatment. In the pot experiments, yields positively correlated with both above- and underground plant parts irrespective of cultivar, not significantly, but significantly with root dry weights in Enrei and with nodule dry weights in Sakukei 4. These results indicate that Sakukei 4 exhibits a marked decrease in dry matter production by waterlogging, but yield decrease is compensated to a level similar to that of Enrei because of its enhanced nodule growth during the recovery stage.
KW - Growth rate
KW - Growth recovery
KW - Nodule
KW - Soybean
KW - Supernodulation
KW - Waterlogging
UR - http://www.scopus.com/inward/record.url?scp=33846488318&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33846488318&partnerID=8YFLogxK
U2 - 10.1626/pps.10.112
DO - 10.1626/pps.10.112
M3 - Article
AN - SCOPUS:33846488318
VL - 10
SP - 112
EP - 121
JO - Plant Production Science
JF - Plant Production Science
SN - 1343-943X
IS - 1
ER -