scholarly journals The growing process of each part of rice plants as affected by temperature in the period of young panicle development.

1986 ◽  
Vol 55 (4) ◽  
pp. 420-426
Author(s):  
Yasuyuki ISHII ◽  
Atsuhiko KUMURA
2021 ◽  
Vol 12 ◽  
Author(s):  
Li Hu ◽  
Weilan Chen ◽  
Wen Yang ◽  
Xiaoling Li ◽  
Cheng Zhang ◽  
...  

Rice grain yield consists of several key components, including tiller number, grain number per panicle (GNP), and grain weight. Among them, GNP is mainly determined by panicle branches and spikelet formation. In this study, we identified a gene affecting GNP and grain yield, OsSPL9, which encodes SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE (SPL) family proteins. The mutation of OsSPL9 significantly reduced secondary branches and GNP. OsSPL9 was highly expressed in the early developing young panicles, consistent with its function of regulating panicle development. By combining expression analysis and dual-luciferase assays, we further confirmed that OsSPL9 directly activates the expression of RCN1 (rice TERMINAL FLOWER 1/CENTRORADIALIS homolog) in the early developing young panicle to regulate the panicle branches and GNP. Haplotype analysis showed that Hap3 and Hap4 of OsSPL9 might be favorable haplotypes contributing to high GNP in rice. These results provide new insights on high grain number breeding in rice.


1995 ◽  
Vol 93 (4) ◽  
pp. 617-623 ◽  
Author(s):  
Shu-Chen Grace Chen ◽  
Sang-Pin Wu ◽  
Pang-Kuo Lo ◽  
Dir-Pu Mon ◽  
Long-Fang Oliver Chen
Keyword(s):  

1981 ◽  
Vol 6 (3) ◽  
pp. 347-349 ◽  
Author(s):  
Takashi YUMITA ◽  
Akinori SHOJI ◽  
Izuru YAMAMOTO
Keyword(s):  

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