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近代对杂种优势的利用已扩大到作物,蔬菜、家畜、家禽各方面。作物方面,在异花或常异花授粉作物玉米、高粱上的利用历史久,范围广;在自花授粉作物水稻上的利用虽刚开始,但发展很快。世界对水稻杂种优势的研究,在五十年代已有报导,六十年代开始掀起研究热潮,开展研究的主要国家有马来亚、巴基斯坦、美国、日本、印度、菲律宾、朝鲜、苏联等。但这些国家至今对此项研究都还处于试验阶段。我国于一九六四年开始对水稻雄性不育杂种优势利用的研究,由于开展了全国科研大协作,进展很快,是世界上应用最早的国家。一九七三
Modern use of heterosis has been extended to crops, vegetables, livestock, poultry in all aspects. Crops, the use of alloplasmic or evergreen pollinated crops of corn, sorghum has a long history, a wide range of; in the self-pollination of rice utilization has just begun, but the rapid development. The study of heterosis in rice in the world has been reported in the 1950s. The research boom started in the 1960s. Malaya, Pakistan, the United States, Japan, India, the Philippines, North Korea and the Soviet Union were the main countries in the study. However, these countries so far are still in the experimental phase of this research. Since 1964, China began to study the utilization of heterosis in male sterility of rice. It has made rapid progress since the national scientific research cooperation was carried out. It is the earliest country in the world. One nine seven three