PT Journal
AU Zhu, M
   Li, F
   Shi, Z
TI Morphological and photosynthetic response of waxy corn inbred line to waterlogging
SO Photosynthetica
PY 2016
BP 636
EP 640
VL 54
IS 4
DI 10.1007/s11099-016-0203-0
WP https://ps.ueb.cas.cz/artkey/phs-201604-0020.php
DE adventitious root; chlorophyll fluorescence; photosynthesis; pigment; tolerance
SN 03003604
AB This study aimed to investigate the effects of waterlogging on the growth and photosynthetic characteristics of paired near-isogenic lines of waterlogging-tolerant (Zz-R) and waterlogging-sensitive (Zz-S) waxy corn inbred line seedlings. All plants were grown until the fifth leaves were fully expanded. Subsequently the plants in the pots were submerged in water for 4 d. During the waterlogging period, morphological and photosynthetic parameters related to waterlogging tolerance were examined. After 4 d, a significant decrease was observed in shoot and root fresh mass, net photosynthetic rate, stomatal conductance, transpiration, water-use efficiency, light-saturation point, maximal photosynthetic rate, apparent quantum yield, maximal quantum yield of PSII, and effective quantum yield of PSII photochemistry in waterlogged plants of both genotypes. The Zz-R genotype showed lesser reduction in all mentioned indices when compared to the Zz-S genotype. The inhibition of photosynthesis under waterlogging occurred due to the reduction in stomatal conductance, fluorescence parameters, and chlorophyll content. Thus, our study revealed that the Zz-R genotype can be a source of genetic diversity for important traits such as morphological and photosynthetic parameters.
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