| 著者 |
矢頭, 治
福井, 清美
KHANH, N. T.
KINH, T. V.
|
|
内容記述 |
The exploration of rice germplasm in central Vietnam was carried out from November 7 to December 6, 1997. This exploration was a cooperative project of National Institute of Agrobiological Resources, Japan, and Department of Science Technology and Product Quality, Ministry of Agriculture and Rural Development, Vietnam. Our exploration in 1997 was the sixth mission since 1994. Authors visited five provinces, Quan Nam, Kon Tum, Gia Lai, Dac Lac and Lam Dong. The area we visited in Quan Nam was at an altitude of 200m above sea level, and in mountainous area covered with rich forest along rivers. Only a few paddy fields were along the river, upland rice was cultivated on the slopes of the mountains under the slash-and-burn practice. The villagers were Kinh, the majority people of Vietnam. The other four provinces were in the central highland, which was called as "Red-soil Highland". Provinces of Kon Tum, Gia Lai and Dac Lac are at an altitude of 500 to 700m and Lam Dong, 1,000 to 1,500m. The central highland is an area of relatively dry weather and red soil of poor fertility. In some areas of this highland, the minority peoples accounted for more than half of the population. Based on these environmental conditions and social factors, many local cultivars of rice, especially of upland cultivars, were cultivated in slash-and-burn fields. Most of rice had been harvested by the time when we visited. Therefore we ask the farmers to provide rice samples for our collection. To record the characteristics of the rice cultivars, we interviewed the farmers. In this exploration, 119 local cultivars were collected. As has been reported in previous explorations in Vietnam, most of the paddy fields, if irrigated irrespective of their size and location, improved cultivars are cultivated. Therefore, 98 of the 119 cultivars collected were upland rice cultivars. Also as has been reported in the previous explorations in Vietnam, some minority people in this country have glutinous or low amylose rice cultivars as their staple foods. In our collection, 22 cultivars were glutinous cultivars and 23 cultivars were considered to be low-amylose cultivars from the observation of brown rice grain. It was considered after our exploration that people in this area still had many local cultivars in addition to these we collected. However, with the economy changes underway in Vietnam, their number may decrease. Therefore, the collecting and evaluating the local cultivars in this area might be an urgent task. |
AREIPGR14_p125-148.pdf (2.4 MB)
