scholarly journals Effects of High Temperature during Ripening Period on the Qualities of Indica Rice.

1966 ◽  
Vol 35 (3-4) ◽  
pp. 239-244 ◽  
Author(s):  
Kazuo NAGATO ◽  
Morie EBATA ◽  
Yoichi KISHI
Keyword(s):  
High Temperature ◽  
Indica Rice ◽  
Ripening Period

scholarly journals Detection of QTLs for white-back and basal-white grains caused by high temperature during ripening period in japonica rice

2015 ◽  
Vol 65 (3) ◽  
pp. 216-225 ◽  
Author(s):  
Takuya Wada ◽  
Katsunori Miyahara ◽  
Jun-ya Sonoda ◽  
Tadashi Tsukaguchi ◽  
Masayuki Miyazaki ◽  
...  
Keyword(s):  
High Temperature ◽  
Ripening Period

scholarly journals Dynamics of phytohormones and their relationship with chalkiness of early indica rice under different post-anthesis temperature regimes

2017 ◽  
Vol 42 (1) ◽  
pp. 53-65
Author(s):  
Mohammed Humayun Kabir ◽  
Qing Liu ◽  
Yi Su ◽  
Zhigang Huang ◽  
Langtao Xiao
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Indica Rice ◽  
Grain Filling ◽  
Flag Leaves ◽  
Content Ratio ◽  
Temperature Regimes ◽  
Head Rice ◽  
Grain Filling Period ◽  
Early Indica Rice

A pot experiment on an early indica rice cv. ‘Shenyou9576’ was conducted in the net house of Hunan Agricultural University, Changsha, Hunan, PR China during the early growing season of 2013 to investigate the influence of varying temperatures on chalkiness rate, head rice rate, and phytohormones, namely indole-3-acetic acid (IAA), gibberellins (GA1 and GA4), zeatin (Z), zeatin riboside (ZR) and abscisic acid (ABA) both in flag leaves and grain endosperm during grain filling period. The treatments comprised three temperature regimes which are designated as the high (35/28oC- day/night), low (25/20oC- day/night) and natural condition as the control (35/25oC- day/night). The results showed that the maximum chalkiness rate was 61.11% under high temperature and the minimum (22.59%) under low temperature. The lowest head rice rate was 42.76% under high temperature followed by 49.91% in the control, while the highest (62.33%) under low temperature. The contents of GA1, GA4, Z and ZR were decreased gradually from 7 to 35 days after anthesis (DAA) irrespective of treatments. IAA content began to decrease from 14 DAA and continued up to 35 DAA and ABA was reduced from 28 to 35 DAA under low temperature in comparison to control and high temperature. ABA content was increased from 7 to 21 DAA and then declined at high temperature. The results showed that contents of GA1, GA4, Z, ZR were high at low temperature compared to high temperature and control. IAA content was also high during grain development period at low temperature except 7 DAA. Higher phytohormone contents were observed in endosperm than in flag leaves. Phytohormone content ratio (endosperm: flag leaves) was found highest in IAA and the lowest in GA1. A significant positive correlation was found between ABA and chalkiness rate during early to mid grain filling period, while significant negative correlations were noticed between chalkiness rate and other phytohormones during grain filling period. Correlation results revealed that increased level of ABA during early to mid grain filing period caused by high temperature was more responsible for development of chalkiness.Bangladesh J. Agril. Res. 42(1): 53-65, March 2017

scholarly journals Natural variations of SLG1 confer high-temperature tolerance in indica rice

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yufang Xu ◽  
Li Zhang ◽  
Shujun Ou ◽  
Ruci Wang ◽  
Yueming Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Stress ◽  
Indica Rice ◽  
High Temperature Stress ◽  
Temperature Tolerance ◽  
Cultivated Rice ◽  
Rice Varieties ◽  
Coding Regions ◽  
High Temperature Tolerance ◽  
Living Organisms

Abstract With global warming and climate change, breeding crop plants tolerant to high-temperature stress is of immense significance. tRNA 2-thiolation is a highly conserved form of tRNA modification among living organisms. Here, we report the identification of SLG1 (Slender Guy 1), which encodes the cytosolic tRNA 2-thiolation protein 2 (RCTU2) in rice. SLG1 plays a key role in the response of rice plants to high-temperature stress at both seedling and reproductive stages. Dysfunction of SLG1 results in plants with thermosensitive phenotype, while overexpression of SLG1 enhances the tolerance of plants to high temperature. SLG1 is differentiated between the two Asian cultivated rice subspecies, indica and japonica, and the variations at both promoter and coding regions lead to an increased level of thiolated tRNA and enhanced thermotolerance of indica rice varieties. Our results demonstrate that the allelic differentiation of SLG1 confers indica rice to high-temperature tolerance, and tRNA thiolation pathway might be a potential target in the next generation rice breeding for the warming globe.

scholarly journals Characterization of physicochemical qualities and starch structures of two indica rice varieties tolerant to high temperature during grain filling

2020 ◽  
Vol 93 ◽  
pp. 102966 ◽  
Author(s):  
Xiaolei Fan ◽  
Yingqiu Li ◽  
Yun Zhu ◽  
Jingdong Wang ◽  
Jie Zhao ◽  
...  
Keyword(s):  
High Temperature ◽  
Indica Rice ◽  
Grain Filling ◽  
Rice Varieties
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