ラオスにおける伝統的マメ科作物栽培種と近縁野生種に関する多様性の生態史

摘要

A field survey was conducted in Laos from November 15 to 26, 2003. During the survey, Vientiane, Luang Prabang, Champasak and Saravan provinces were explored. A total of 19 Vigna accessions consisting of 5 Vigna umbellata, 1 V. unguiculata, 3 V. hirtella, 1 Vigna (cf. V. reflexo-pilosa), 5 V. minima and 4 Vigna sp. (cf. V. hirtella) were collected.V. umbellata (rice bean) was found cultivated in a farmers garden near Vientiane. Escaped V. umbellate was also found in Champasak and Saravan provinces. An accession of black seeded V. unguiculata (cowpea) was found growing as an escape around paddy field in Luang Prabang province. Three accessions of V. hirtella and 1 accession of Vigna sp. (cf. V. reflexo-pilosa) were also found in Luang Prabang province. On the Bolovens plateau of Champasak province, an unidentified Vigna species (cf. V. hirtella) was found near an upland rice field at an elevation around 1000m. V. minima was found at high elevation (the Bolovens plateau) and also a low elevation area (around lowland paddy rice field) in Champasak and Saravan provinces.