Evaluation of waterlogging tolerance with the degree of foliar senescence at early vegetative stage of maize (Zea mays L.)
Autor: | Seong-Hyu Shin, Gun-Ho Jung, Jeong-Tae Kim, Beom-Young Son, Woonho Yang, Young-Up Kwon, Kang-Bo Shim, Seong-Guk Kim, Chung-Guk Kim, Sang Gon Kim, Mi-Ok Woo |
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Rok vydání: | 2016 |
Předmět: |
0106 biological sciences
Germplasm Abiotic component Senescence Plant physiology 04 agricultural and veterinary sciences Plant Science Biology 01 natural sciences Zea mays Degree (temperature) Agronomy Inbred strain 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science 010606 plant biology & botany Biotechnology Waterlogging (agriculture) |
Zdroj: | Journal of Crop Science and Biotechnology. 19:393-399 |
ISSN: | 2005-8276 1975-9479 |
Popis: | Maize is highly susceptible to waterlogging, which is becoming one of worldwide abiotic threats in many agricultural areas. This study was evaluated to establish the screening method and to find tolerant maize genotypes. Six Korean maize inbred lines were subjected to waterlogging at V3 for 15 days using a big size pot with single maize plant (big pot method) and a box containing 31 maize plants at a time (box method). The degree of foliar senescence and the number of senescent leaves were better indicators for selecting waterlogging tolerant maize genotypes than SPAD value and plant height. The degree of foliar senescence revealed that KS124, KS140, and KS141 are tolerant, and KS85 is susceptible to waterlogging at the early growth stage. These responses of foliar senescence were in clear accordance with those of plant grain yield, which was supported by stress tolerance index for grain yield. The box method also showed the similar response of foliar senescence to the big pot method. Therefore, this box method based on foliar senescence may be simple and efficient for large-scale screening of maize germplasm against waterlogging stress. It was concluded that foliar senescence can be a good indicator for selecting tolerant maize genotypes against waterlogging at the early growth stage. |
Databáze: | OpenAIRE |
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