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日本政府于1981年设立《超高产作物的开发与栽培技术》这一研究课题,提出15年内育成比现有品种增产50％的超高产水稻品种的育种目标。本文根据最新报道作一简介。 一、日本超高产水稻育种的阶段目标 日本从1982年正式开始执行超高产水稻育种计划,持续期15年。分三个阶段进行:第一阶段3年,从1982—1984年,主要目标是从现有育成品系中选出比生产品种增产10％的品种;第二阶段5年,从1985—1989年,目标是通过现有高产品种、极大粒品系、
The Japanese government set up the research project “Development and Cultivation of Super-high-yield Crops” in 1981 and proposed the breeding target of super-high-yielding rice varieties with a yield increase of 50% over the existing varieties in 15 years. This article based on the latest report for a brief introduction. I. Stage of Japans Super-high-yielding Rice Breeding Objective Japan officially began implementing the Super-high-yielding rice breeding program in 1982 with a duration of 15 years. The first phase of three years, from 1982 to 1984, the main goal is to select from the existing breeding line than the production of varieties increased by 10% varieties; the second phase of five years, from 1985 to 1989, The goal is through the existing high-yielding varieties,