Table 2 Panicle water potential, kernel water potential, endosperm cell turgor, calculated osmotic potential, and growth-induced water potential determined at 8 DAH nighttime in control and HNT treatment.

From: Endosperm cell size reduction caused by osmotic adjustment during nighttime warming in rice

Treatment

Panicle water potential (MPa)

Kernel water potential (MPa)

Turgor (MPa)

Calculated osmotic potential (MPa)

Growth-induced water potential (MPa)

Control

− 0.30

− 0.34

0.01

− 0.35

0.04

HNT

− 0.46

− 0.49

0.01

− 0.50

0.03

Treatment effect

***

***

NS

***

***

  1. Kernel water potential was calculated by regression equation (see “Results” section). Cell turgor was directly determined at 9 DAH. The calculated osmotic potential was calculated by subtracting turgor from kernel water potential. The growth-induced water potential was calculated by subtracting the kernel water potential from panicle water potential (source of water). The data of panicle and kernel water potential are means ± SE from 6 to 9 independent plants in each treatment. The data of turgor are means ± SE from 12 to 15 cells from 5 to 8 kernels from three independent plants in each treatment
  2. *** and NS indicate p < 0.001 (t-test) and no significant difference, respectively.
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