Genetic variation of rice (Oryza sativa L.) germplasm in Cambodia

Copyright © 2020 by JAPANESE SOCIETY OF BREEDING.

Bibliographische Detailangaben
Veröffentlicht in:Breeding science. - 1998. - 70(2020), 5 vom: 01. Dez., Seite 576-585
1. Verfasser: Orn, Chhourn (VerfasserIn)
Weitere Verfasser: Saito, Hiroki, Khan, Mohammad Ashik Iqbal, Nhuiyan, Mohammad Rajiwan, Vathany, Thun, Khay, Sathaya, Makara, Ouk, Fukuta, Yoshimichi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Breeding science
Schlagworte:Journal Article Cambodia blast resistance genetic variation heading date rice (Oryza sativa L.)
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520 |a Genetic variations of 179 rice (Oryza sativa L.) accessions from Cambodia were clarified based on the analyses for heading date, chromosome components, and blast resistance. The dominant accessions were found in three regions; early heading in North East (NE), medium in Central (CT), and late in South East (SE) along the Mekong River in the investigation at Ishigaki, Japan. In contrast, wide variations were observed in two regions, South West (SW) and North West (NW) located around Tonle Sap Lake. Polymorphism data of SSR markers showed that accessions were classified into Japonica Group (cluster Ib), and Indica Groups (IIa and IIb). In the NW and SW, the accessions of all three clusters were found, but these accessions in NE, CT, and SE, were limited to one or two clusters. Accessions were classified again into two clusters, A1 as having high resistance and A2 as having moderate resistance. Remarkable differences of these frequencies of clusters, A1 and A2, were found in the SE, SW, and NW, and similar with these of the whole accessions were in NE and CT. Rice accessions varied among the five regions, and there was a dramatic difference between the regions along Mekong River and the regions around Tonle Sap Lake 
650 4 |a Journal Article 
650 4 |a Cambodia 
650 4 |a blast resistance 
650 4 |a genetic variation 
650 4 |a heading date 
650 4 |a rice (Oryza sativa L.) 
700 1 |a Saito, Hiroki  |e verfasserin  |4 aut 
700 1 |a Khan, Mohammad Ashik Iqbal  |e verfasserin  |4 aut 
700 1 |a Nhuiyan, Mohammad Rajiwan  |e verfasserin  |4 aut 
700 1 |a Vathany, Thun  |e verfasserin  |4 aut 
700 1 |a Khay, Sathaya  |e verfasserin  |4 aut 
700 1 |a Makara, Ouk  |e verfasserin  |4 aut 
700 1 |a Fukuta, Yoshimichi  |e verfasserin  |4 aut 
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773 1 8 |g volume:70  |g year:2020  |g number:5  |g day:01  |g month:12  |g pages:576-585 
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