国立研究開発法人 国際農林水産業研究センター | JIRCAS

Diversity of Rice Varieties and Cropping Systems in Bangladesh Deepwater Area

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

Sixty-eight indigenous rice cultivars collected in deepwater areas in Bangladesh were examined in terms of heading behavior and allozyme variation. Seasonal ecotypes differed in the heading behavior for adaptation to their respective cropping seasons. Isozyme analysis revealed that cultivars grown in deepwater areas in Bangladesh consisted of a Japonica-like group and unclassified unique group in addition to a major Indeca group. Classification by isozyme variation was not necessarily consistent with the differentiation into seasonal ecotypes. Cultivars collected in a restricted area in Khulna District consisting of various seasonal ecotypes showed a genetic similarity to each other, suggesting that geographical differentiation preceded seasonal differentiation. Based on a case study conducted in 2 villages in Khulna, it was pointed out that diverse landraces which are adapted to different local and seasonal conditions have evolved by interacting with traditional planting systems.

刊行年月2000-10-01
作成者Hong-Wei CAI Hiroko MORISHIMA
データ作成日2000-10-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
34
4
開始ページ225
終了ページ231
言語eng