scholarly journals Cultivation and ecophysiology of rice plants in the tropics. II. Behaviour of stomatal aperture in some rice cultivars of India.

1987 ◽  
Vol 56 (2) ◽  
pp. 226-231 ◽  
Author(s):  
Tetsuro TANIYAMA ◽  
M. L. N. RAO ◽  
S. V. SUBBAIAH ◽  
Katsuhiko IKEDA
Keyword(s):  
Stomatal Aperture ◽  
Rice Cultivars ◽  
Rice Plants ◽  
The Tropics

scholarly journals Cultivation and ecophysiology of rice plants in the tropics. III. Photosynthesis of rice cultivars of india, measured by the Tsuno's simple method.

1988 ◽  
Vol 57 (1) ◽  
pp. 184-190 ◽  
Author(s):  
Tetsuro TANIYAMA ◽  
S.V. SUBBAIAH ◽  
M.L. N.RAO ◽  
Katsuhiko IKEDA
Keyword(s):  
Rice Cultivars ◽  
Simple Method ◽  
Rice Plants ◽  
The Tropics

Developing Aerobic Rice Cultivars for Water-Short Irrigated and Drought-Prone Rainfed Areas in the Tropics

Crop Science ◽  
2010 ◽  
Vol 50 (6) ◽  
pp. 2268-2276 ◽  
Author(s):  
D. L. Zhao ◽  
G. N. Atlin ◽  
M. Amante ◽  
Ma. Teresa Sta Cruz ◽  
A. Kumar
Keyword(s):  
Aerobic Rice ◽  
Rice Cultivars ◽  
The Tropics

scholarly journals Aspects of cultivar variation in physiological traits related to Cd distribution in rice plants with a short-term stress

2020 ◽  
Author(s):  
Wan-Ting Chiao ◽  
Bo-Ching Chen ◽  
Chien-Hui Syu ◽  
Kai-Wei Juang
Keyword(s):  
Shoot Growth ◽  
Rice Grain ◽  
Rice Cultivars ◽  
Cd Accumulation ◽  
Physiological Regulation ◽  
Rice Plants ◽  
Cd Contamination ◽  
Cultivar Variation ◽  
Cd Distribution ◽  
Cd Translocation

Abstract Background Genotypic variations are seen in cadmium (Cd) tolerance and accumulation in rice plants. Cultivars that show low Cd translocation from the root into shoot can be selected to reduce Cd contamination in rice grains. This study aims to clarify the physiological regulation related to Cd absorption by rice plants for screening out the cultivars, which have relatively low Cd accumulation in grains. Eight Taiwan mega cultivars of paddy rice: japonica (TY3, TK9, TNG71, and KH145 cultivars), indica (TCS10 and TCS17 cultivars), and glutinous (TKW1 and TKW3 cultivars), which are qualified with the criteria for rice grain quality by the Council of Agriculture, Taiwan, were used for illustration. An experiment in hydroponics was conducted for the rice seedlings with a treatment of 50 μM CdCl 2 for 7 days. Results and discussion After the Cd treatment, the reductions in shoot growth were more significant than those in root growth; however, Cd absorbed in the rice plant was sequestered much more in the root. The malondialdehyde (MDA) was preferentially accumulated in rice root but the hydrogen peroxide (H 2 O 2 ) was increased more significantly in the shoot; the antioxidative enzymes, superoxide dismutase (SOD) and ascorbate peroxidase (APX), were pronounced more in rice shoot. Conclusions The rice cultivars preferentially accumulated Cd in the root rather than the shoot with the Cd treatment, which resulted in significant enhancements of MDA and growth reductions in the root. However, H 2 O 2 accumulation was toward the shoot to retard shoot growth suddenly and then the root could keep a gradual growth. Also, the rice cultivars, which preferentially accumulate Cd in the root, would have the regulation tendency of SOD toward the shoot. Due to that SOD is responsible for H 2 O 2 production, H 2 O 2 accumulation would be thus toward the shoot. Moreover, the cultivars, which have a less regulation tendency of APX toward the shoot, would present higher translocation of Cd into the shoot.

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