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Key agronomic traits for variety selection by farmers in upland rice systems of Lao
https://doi.org/10.34556/0002000387
https://doi.org/10.34556/000200038795691c77-f117-41c2-9777-1d8cd748cd57
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
jircas_working_report90-_1-14 (1.82MB)
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| Item type | 国際農研デフォルトアイテムタイプ（フル）(1) | |||||||||
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| 公開日 | 2024-07-18 | |||||||||
| タイトル | ||||||||||
| タイトル | Key agronomic traits for variety selection by farmers in upland rice systems of Lao | |||||||||
| 言語 | en | |||||||||
| 作成者 |
Asai, Hidetoshi
× Asai, Hidetoshi
× Soisouvanh, Pheunphit
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | In the mountainous areas of Lao P.D.R, where upland rice production under shifting cultivation has been a major system for rice security, farmers have grown diverse varieties according to their indigenous knowledge. However, the policy for forest conservation and the shift to a market economy since the 1990s has dramatically changed the nature of shifting cultivation, which potentially affects the farmers’ selection of varieties of upland rice. To identify the key agronomic traits for variety selection by upland rice farmers, we conducted a germplasm collection and an interview survey of rice characteristics and cultivation frequency in a total of 26 villages in the Luang Prabang, Vientiane and Sekong Provinces during the period from 2014 to 2015. Characteristics, such as plant height, tiller number, soil adaptability, and maturity, were recorded as categorical parameters with two to five classes; grain shape (length and width) and grain weight were measured as continuous parameters. We collected 244 accessions from 26 villages. The number of accessions per village was highest in Luang Prabang Province, which proportionately has the largest area of shifting cultivation in Lao. For each characteristic evaluated with the interview survey, a Pearson's chisquare test was performed to compare the frequency distribution between the primary genotype group (n =27), which were the genotypes with the highest cultivation frequency in each village, and the total population (n = 244). The results showed a significant difference in two characteristics: environmental adaptability and maturity. The frequency distribution of environmental adaptability to poor, moderate and good environments was 29%, 55% and 24% for the total population but 15%, 22% and 63% for the primary genotype group. The frequency distribution of maturity for early, middle and late maturity was 19%, 30% and 51% for the total population but 7%, 11% and 82% for the primary genotype group. These results indicate that upland rice farmers in Lao tend to prefer varieties with late maturity that are adapted to good environments. |
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| 言語 | en | |||||||||
| 出版者 | ||||||||||
| 出版者 | Japan International Research Center for Agricultural Sciences | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_3248 | |||||||||
| 資源タイプ | book part | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| ID登録 | ||||||||||
| ID登録 | 10.34556/0002000387 | |||||||||
| ID登録タイプ | JaLC | |||||||||
| 関連情報 | ||||||||||
| 関連タイプ | isPartOf | |||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | https://doi.org/10.34556/0002000382 | |||||||||
| 関連名称 | Potential and Efficiency of Underused Agricultural and Fishery Resources in Laos | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | PISSN | |||||||||
| 収録物識別子 | 1341-710X | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA11159468 | |||||||||
| 書誌情報 |
en : JIRCAS Working Report : Potential and Efficiency of Underused Agricultural and Fishery Resources in Laos 巻 90, p. 1-14, 発行日 2020-03-19 |
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| 位置情報 | ||||||||||
| 位置情報（自由記述） | Laos | |||||||||
| 位置情報（自由記述） | ラオス | |||||||||
