肥沃度センシング技術と養分欠乏耐性系統の開発を統合したアフリカ稲作における養分利用効率の飛躍的向上

現地圃場視察(課題2)

2019.07.19

共同研究打ち合わせ及び現地圃場視察

I made a series of field visits at four lowland and two upland experimental sites. We made selections based on estimated yield and on general phenotypic appearance. Criteria were earliness, medium plant height and panicle size. These traits had been mentioned by most farmers as their primary criteria for choosing a new variety. Selections were followed by harvests of breeding lines. At all sites farmers expressed their desire to keep some of the harvested grain in order to test our breeding lines in their own fields next season. I furthermore explored potential new field sites in the coastal North-Western region of Madagascar around the main rice region of Marovoay. Salinity is one of the main stresses in the dry season at that location and salt-affected fields were identified for an initial salinity tolerance screening to be conducted from May-October 2019. I visited the regional office of FOFIFA and the local University to discuss the details on how to manage these experiments, and how to support them financially. 

Salinity affected fields in the Marovoay region, the 3rd biggest rice producing region in Madagascar

Anjiro site with breeding lines at the start of our harvest

Antanetikely site: farmers like this IR64-Pup1+ lines and want to grow it in their own fields next season