While rice has thousands of years of history of mankind, but in search of higher yields, better quality, has a special flavor or aroma, strong environment tolerance, less vulnerable to diseases and pests ... ... Rice has been trying to cultivate better varieties.

The first hybrid rice breeding, is to select new varieties of "MOM and Dad" send, I hope future varieties can be a combination of the advantages of both. Because rice is self-pollinating plants, hybrids normally impossible, therefore must be pollinated.

Hybrid rice on behalf of the parent is the first "castrate", do not let the mother plant's own pollen has the chance of fertilization. Usually emasculation with of is soup method, using pollen heat degrees below pistil of characteristics, will rice spent bubble in Celsius 43-45 degrees around of warm water in the about 5-7 minutes, so comes most pollen on will failure, then also to will "Ying spent" (rice spent of most top) one by one cut to, to determine no any pollen left to into, at again took will parent strains of pollen spread in pistil Shang, and will female rice sets Shang paper bags, so as not to and has near other rice of pollen floating to into "bastard".

Because the rice-flower small and inconspicuous, bubbles of warm water for too long could cause rice flower die, pruning process could make rice flower no fruit because of the trauma, and a bunch of rice may have hundreds of rice flowers, and flowering time of the parent strain and the parent you want to be able to go on, so hybrid process is hard work, but also has a very high degree of technical difficulty.

If hitch knot after the cross-cut shapes out of rice, is the first generation. All of millet in the first of a pair of genes is Aa, so genetic traits should theoretically be the same, but the next generation will appear after AA, AA, and Aa three possible at this time to enter the second half of the "screening" process. Researchers must be among the different genes, the best way to find what they want. Rice twice a year, and only two generations a year breeding project. In General, hybrids from the beginning to the successful development of a new strain of rice, for the named publication, often takes an 8-10 of time.

　　Farmers before the rice, choice of varieties suitable for planting is a very important thing, because each region's climate and growing conditions are not the same, so farmers have to choose varieties planted on the ground, so that rice growing under the climate and environmental support grain field grew more plump, rice crops which produce good taste. You may ask, how do farmers know which varieties to plant it? Where these species come from? Now, let us look at it!

Actually, currently national in Taoyuan, and Miaoli, and Taichung, and Tainan, and Kaohsiung, and Hualien, and Taitung County are has set agricultural improved field, in country of improved field, will has hand is responsible for research, and development new of rice, once has new of rice was development out, improved field of personnel, on will put these varieties of rice introduced to farmers awareness and understand, so farmers on can purchase new varieties of rice to planting.

Agricultural improvement farm, they will make use of different varieties of rice every year, hybrid work, these hybrid rice is the growth of a new generation of rice became the seed of the first generation (F1 for short). Then, improved field of researcher will put F1 of rice in field planting, observation records F1 rice growth case, and let rice flowering, and knot spike produced second generation of rice (referred to for F2), on such constantly of observation and planting, if a until seventh generation (referred to F7) rice of growth case still good, so improved field on will began in national all area expand planting of work.

National trial the purpose of is to understand the new variety of rice, is not suitable for use in Taiwan region, around as well as new varieties of rice planting, growth is good, Spike is good, if resistance is good and so on. If the new strain of rice growth aren't around, then it will probably be abandoned, if the new variety of rice is growing well in various places, will Rice's name, and list them as Taiwan's good quality rice, the agricultural improvement farm, it will be extended to farmers.

Therefore, a new rice seeds from research and development, each named to promote the process takes at least 7-10 years before we are able to complete. Taiwan rice in the area of continuous improvement and excellence throughout the agricultural improvement station credited with Oh!