Hybridization definition: The base pairing of two single-stranded DNA or RNA. The classical and commonly used practical method in genetics. The method of obtaining certain parental genetic recombinations between individuals through mating between individuals of different genotypes. In general, the process of fusing the germ cells to achieve this purpose is called hybridization, and the process of fusing somatic cells to achieve this result is called somatic cell hybridization.

According to the requirements of the Hell Palace's manifest, if you want to solve the problem of the output of this heavenly treasure for a long time, it will become urgent for everyone to have more time to cultivate. After all, you really think that the purpose of everyone joining the Holy House is to be able to improve themselves, not to become a slave, or a hunter.

"I have already told you the meaning of hybridization, I believe that the senior sister should also know the importance of hybridization to our holy institute, hybrid rice you should also know, Professor Yuan is through guò hybrid rice, directly increased the rice yield by 20%, feeding 200 million more people, the Western world said, hybrid rice is the "Oriental magic rice", his other title is "Chinese magic rice". His achievements not only solved the problem of feeding the Chinese to a large extent, but also was considered a magic weapon to solve the problem of world hunger in the next century. Internationally, hybrid rice is even regarded as China's fifth greatest invention after the four major inventions, known as "the second green revolution, so, I hope you can lead Brooke to create a new hybrid heaven and earth treasure, my requirements are not too high, as long as it is increased by 10%, we can complete some things that everyone can't imagine, and we can also bring more pills back to the Xiushen Continent, this place is a place that can not be found, so we need your help." ”。 Chen Chao said sincerely, and now even Avril and Xiao Qi are looking at Cao Bi and Brooke with anticipation.

"I studied marketing in college, not biology. You don't even tell us about any way. Cao Bi said with a smile.

"I'm actually reading from the book, and what you want is to learn from it. The main methods are these, male sterile line: it is a female rice with male degradation (mainly pollen degradation) but normal pistils, due to the inability of pollen to live, can not self-pollinate and bear fruit, and can only rely on foreign pollen to fertilize and bear fruit. Therefore. With the help of this mother rice as a genetic tool, hybrid seeds can be produced in large quantities through artificial assisted pollination.

Maintainer line: is a normal rice variety, its special function is to use its pollen to give to the sterile line, the offspring produced are still male sterile. Thus, with the help of the maintainer line, the sterile line can be multiplied from generation to generation.

Hui fù line: is a normal rice variety, its special function is to use its pollen to impart the male of the hybrid produced by the sterile line. It can be self-inbred and fruitful, and if the hybrid has an advantage, it can be used for production.

Three-line hybrid rice: refers to the breeding of male sterile lines, maintainer lines and Huifù lines, which provide the possibility of producing a large number of hybrid seeds, with the help of maintainer lines to propagate sterile lines, and pollinate sterile lines with Huifù lines to produce male hybrid rice with dominant characteristics.

Two-line hybrid rice: a kind of rice named light and temperature sensitive sterile line, its fertility transition is closely related to the length of sunshine and temperature, under the condition of long day high temperature. It is shown to be sterile in males, and in short-day normal temperature conditions, males are fertile. The development of hybrid rice using light and temperature-sensitive sterile lines. It can be used to breed with the recovery line under long sunshine in summer, and can reproduce itself in autumn or spring in Hainan, and no longer needs to use the maintainer line to propagate sterile lines, so the hybrid rice prepared with light and temperature sensitive sterile lines is called two-line hybrid rice.

A line of hybrid rice: the one line method is no longer necessary to produce seeds every year, and there is no variation in the seed advantage, and it is more complex and simple. The process of progressing from low to high. The steps are as follows:

The mother of rice variety was selected, the mother was emasculated, the mother was crossed with the paternal parent, the mother was cultivated to germinate and grow the axillary bud, the axillary bud was flowered and self-established, and the inbred seeds at the axillary bud were obtained. Because the self-bred seeds after axillary bud flowering are taken, they have the same heterosis as the hybrid seeds, and because the above-mentioned inbred seeds have the advantage that the hybrid offspring are not easy to separate, they have the technical effect of fixing the heterosis of rice. The above principle and method are described below with a preferred embodiment. First, we select a homozygous and excellent rice variety as the mother; We emasculated the whole panicle and crossed it with the paternal parent, and after fertilization and fruiting, an appropriate amount of nitrogen fertilizer was applied to facilitate the germination and growth of axillary buds. After the inbred seeds have matured, the inbred seeds of the inverted two-leaf axillary buds are harvested as propagation material for the next year, and the inbred seeds are new varieties that have heterosis and have been fixed. I hope this enlightens you a little. After Chen Chao finished speaking, he drank a large glass of water.

"I didn't expect your memorable ability to be really good, using pollen for fertilization, let's try it now. Cao Bi took Brooke and went directly into the Lasdi Valley, their task was heavier, collecting seeds and pollen, setting up a real room, a cultivation room, and a seed room, of course, at the beginning, it was definitely the two of them who took the lead. As for how to get it later, everyone will definitely help.

"Boss, we're done. Cruyff reported as soon as a few of them came in.

"How many people," Chen Chao is most concerned about this, now everything is ready and only people are owed. A lot of things are really powerful. It's impossible to start creating a group of guys right now, it's no wonder that this won't attract the siege of the hell court. He still understands the truth that Huaibi is guilty.

"There are exactly three hundred people, each of them is at the level of the intermediate holy rank, which is very good, I have divided them into eight groups according to their magical attributes, which are wind, fire, earth, water, darkness, light, thunder, and nature. It's also strange, there are just 30 people in each group, and there are 60 Juggernauts left, and I want to form a self-defense team to guard our base and patrol our territory, as well as things including the collection of offerings in the future melee. What do you think. Cruyff said.

"The natural ones were separated first, and told them to follow my mother and Brooke. As for the wind system, it will be handed over to Senya, the fire system will be handed over to Bobby, Phillips and Yilu will be in charge of the light department, the thunder system will be given to Master Xiaoqi and Reddy, the dark system will be handed over to Chen Ye Kid, the water system will be handed over to Cao Lan, and the earth system will be brought by yourself. Fortunately, everyone is a compound system, and each person is proficient in at least two departments of magic, otherwise it would be a bit difficult to find eight commanders at once. As for the rest of the Juggernaut, Reina is in charge, so everyone has no opinion. Chen Chao first arranged personnel.

"Didn't you say that we still need to cultivate a high-level saint-rank master, I'm afraid I'm afraid this is a little difficult for me and Yilu. Phillips said embarrassedly.

"Chen Ye, do you have any questions. Chen Chao looked at his three-year-old brother.

"I'm sure there's no problem, a high-level holy rank, I can still teach it. Chen Ye said confidently.

"Then I'll bring the light. Your little seventh master has launched. I'm afraid I'll be idle too, but it's the two of you who are in charge, don't be lazy, or I'll deduct your credits. Teacher Avril saw Chen Chao, who had a little headache, and took over.

"It's best if the teacher is in charge, and now I'm going to assign the task. This is our map of the Eastern Zone, except for the usual cultivation and meetings, your main locations are these areas, and I have marked them according to your attributes. Chen Chao directly conjured up a sand table. One color for each attribute. It's clear to everyone at a glance.

"Now let's assign the tasks of the Holy Courtyard. In addition to the collection of the heavenly materials and earthly treasures in the area that you are responsible for, we also have to carry out the daily work of the Holy Courtyard, and we only have three months, so we need to do our best to train new people. The Fire and Earth Formations are responsible for the construction and fortifications of our region, and the Light Faction establishes the medical mechanisms and logistics within the region. The Wind and Dark systems are in charge of trap defense and intelligence, and I'll be with you, don't pout your little mouth. Everyone looked at Chen Ye and smiled knowingly.

"The water system is responsible for the construction of the city wall and the internal logistics first. It's hard work, as for the Sword Saint Department, you should first go to the Land of Fighting to collect the ruling power of the Eastern District, and then take over the work of the water system when you are done, and I will be of great use to the law saints of the water system. Chen Chao finally arranged the task clearly.

"Cruyff, you lead the people from the Nature Department to Brooke first. Let's go our separate ways. Remember, brothers are of the same heart. ”

"Its profits are gold. (To be continued......)