Effect of Prolonged Waterlogging on Growth and Yield of Characteristics of Maize (Zea mays L.) at Early Vegetative Stage
2017
Shin, S., Research Policy Bureau, RDA, Jeonju, Republic of Korea | Jung, G.H., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Kim, S.G., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Son, B.Y., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Kim, S.G., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Lee, J.S., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Kim, J.T., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Bae, H., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Kwon, Y., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Shim, K.B., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Lee, J.E., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Baek, S.B., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea | Jeon, W.T., Department of Central Area Crop Science, NICS, RDA, Suwon, Republic of Korea
Waterlogging strongly affects maize (Zea mays L.) growth. It is necessary to find the screening method of waterlogging tolerant maize lines. This study was to investigate the growth characters at V3 stage of maize, when is very sensitive to waterlogging. Six Korean maize inbred lines were subjected to waterlogging at V3 stage for 30 days. The 30 days waterlogging treatment significantly reduced plant height, number of expanded leaves, and SPAD value, compared with the control plants. SPAD values were significantly different among the six inbred lines, KS140 was the highest. The dry matter accumulation of aerial and root part were significantly decreased by 30 days waterlogging. KS140 was the weightiest among inbred lines. The dry matter of adventitious root showed same trend. Waterlogging treatment significantly reduced to ear length and thickness, grains filling length, grain number per ear, and maize grain. Plant height, SPAD value, and number of fully-expanded leave showed high correlation with maize grain yield, but number of senescent leaves, dry matter of adventitious root and TR ratio did not, suggesting that the former three traits may be good indicator for evaluating 30-day waterlogging tolerance of maize inbred lines. KS164 was the highest yield by increasing of grains filling length and grain number per ear of among waterlogging inbred lines. According to the results, evaluation of maize waterlogging should be consider both early growth characteristics and resilience in the later growth stages.
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