成果の概要

At JIRCAS in Tsukuba I completed two experiments with mutant lines for the phosphate transporter gene. They were conducted in a growth chamber in soil and in nutrient solution, each under high and low P supply. We furthermore completed the analysis of sugars and starch from experiments exploring source-sink relations under P deficiency.
In Madagascar we prepared and conducted a variety release ceremony for our new upland rice variety Mavitrika. The ceremony on March 21^st was attended by the prime minister and the ministers of agriculture and higher education. The prime minister gave a well-received speech and the whole event was featured in the evening news on national TV. I furthermore conducted breeding trials to select possible new varieties characterized by higher yield potential when organic manure is applied.