《Table 2.Effects of gradual soil drying on total leaf area(TLA),specific leaf area(SLA),and specific

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《Morpho-Physiological Response of Oryza glaberrima to Gradual Soil Drying》

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To explore morphological and physiological responses of rice leaves under gradual soil drying exposure and during recovery period，leaf chlorophyll content，TLA，SLA，SLW，gs and LRS were determined on each sampled plant.There were differences in SPAD values at different measurement times，soil conditions and among genotypes（Table 1）.In general，the SPAD values at the beginning of treatment were lower than those at the end of treatment and the recovery period.Drought stress caused no significant SPAD value reduction for O.glaberrima genotypes，but there was a sharp reduction in O.sativa，especially for Minamihatamochi.It is interesting to note that RAM12 was able to increase the SPAD value in limited water availability.However，all genotypes can increase the SPAD values after recovery period.