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The latest course of Maize breeding techniques and methods
Seeds are the most important means of production, and new varieties are the core foundation of agricultural scientific and technological progress. Maize breeding and production practice show that 43% to 60% of the increase in maize yield is achieved through excellent varieties and their popularization. therefore, it is important to cultivate and popularize new maize varieties.
2020-11-10 The latest corn breeding techniques methods tutorials seeds are -
How to breed corn?
How to breed corn? Please introduce the natural cross-pollination habit of maize and the heterozygosity of genetic basis, as well as the breeding procedure of utilizing the heterosis of F1 generation among inbred lines, which forms the particularity of maize breeding. Almost without exception, any successful corn breeder and research institute comes from.
2018-07-19 -
Screening of 8 new strains of virus-free boll potato
1 Materials and methods 1.1 A total of 9 new strains of virus-free potato were tested, all of which were introduced from the potato breeding and virus-free center of Bijie Prefecture. The strain numbers are: B9904mur2, B9904mur1, B9901mur33, B9911mur1, B9911mur3, B9907mur4, B9910mur9, BP26, CK. 1.2 the test method is set on the contracted land of Chen Guangyi peasant household in Fengshan Village, Fengshan Township, Dafang County.
2019-01-16 -
Maize breeding techniques
Maize breeding techniques
2018-07-01 -
Share a few examples of the beauty of bonsai lines
The beauty of bonsai lines, share a few examples all visual art creation is based on points, lines, surfaces. Among them, lines are particularly important, and friends who know how to sketch must have deep experience. Bonsai art is also like this to shape the artistic form with lines.
2018-06-17 -
A Single Recessive Photoperiod and Temperature Sensitive Genic Male Sterile Line Yahuang 396a in Cotton
1. The present situation and problems of breeding and seed production by using heterosis 1.1. The technique of artificial or chemical emasculation hybridization is simple, any two varieties can be parents of each other, anthesis emasculation and artificial pollination can be used, and chemical emasculation hybridization can also be used for seed production. The advantages are easy to make full use of existing variety resources, strong randomness of hybrid selection, free combination, and partial combination can use F2. Disadvantages are labor intensity, labor, high cost, F2 heterosis than F1 more decline. 1.2 cells
2019-01-16 -
Bonsai: you can't miss the bonsai. Look at the winding lines of the branches.
Bonsai: you can not miss the bonsai, look at the winding branches, beautiful lines, as long as you have seen it, you will like it, hurry up to collect ah. ...
2018-06-17 -
Successful breeding of Restorer Lines of late Japonica Hybrid Rice in the Yangtze River Basin
Through the efforts of experts from the Shanghai Academy of Agricultural Sciences, the restorer lines of late japonica hybrid rice in the Yangtze River Basin-Shenhui 254 and Shenhui 1 were successfully selected and utilized. The project was awarded as the first prize for scientific and technological progress by the Shanghai Municipal Government this year. The key to the application of late japonica hybrid rice in the Yangtze River Basin is to develop excellent late japonica restorer lines. This project uses indica-japonica subspecies intermediate materials as bridge parents, introduces indica rice restoration gene into late japonica rice varieties, and aggregates excellent and good bases of several high-quality parents by polymeric hybridization and systematic selection.
2019-01-16 -
Breeding of Purple Marker male sterile Lines of Rice in Guangxi
Xianhong An and Zhihong A, two rice male sterile lines with purple leaf markers, were developed by a research group led by Liang Shirong, an excellent expert in Guangxi, and Deng Guofu, vice president of Guangxi Academy of Agricultural Sciences. On August 3, 2007, it passed the field technical appraisal organized by the Office of Guangxi crop Variety approval Committee. After strict field investigation and indoor microscopic examination, and listening to the technical report and answering questions of the research group, the expert group agreed that Xianhong An and Zhihong A had stable agronomic characters, stable sterility and flowering.
2019-01-16 -
Using chocolate to ponder the dark jewelry box with agricultural lines carrying local taste.
Using chocolate to ponder the dark jewelry box with agricultural lines carrying local taste.
2018-03-16 -
Is Camellia oleifera with narrow base lines a tea?
Rabdosia angustifolia is not tea. She is a weak perennial herb with creeping roots at the base and small spherical tuberous roots. Stem 15100 cm tall, erect or ascending, 4-angled, sulcate, pubescent to several long sparsely pilose, often proximally with many leaves. I. narrow baseline
2020-11-08 Narrow baseline lines fragrant tea vegetables yes tea narrow -
Bonsai appreciation: lines to interpret the life of bonsai, have you ever enjoyed such a beautiful bonsai?
Shaping bonsai pays attention to "the straight position should be hidden, not exposed, and the straight position should be exposed rather than hidden". The branches of this bonsai are graceful, hidden and dewy, and the shape is extremely beautiful. ...
2018-06-07 -
"Rental Toys" ramming! 360 lines and one more line
Cheng Wen-Chan, mayor of Taoyuan, re-examines that children in Taoyuan Aviation City love to play with toys, and their parents both know it! The survey pointed out that the output value of infant toys sold in Taiwan within a year is about NT $10 billion, but most well-known brands play.
2018-07-03 -
Why should we draw three red lines of rural land?
The demarcation of the three red lines of ■ can not only ensure the smooth implementation of the reform, but also prevent some people from harming farmers and national interests in the name of reform, so that the scarce land resources can increase more output and benefits for the country and farmers. The land in the countryside of our country is divided into three plots.
2016-03-20 Why want draw rural areas land of three red lines ■ -
Seed production techniques of Cotton male sterile Lines
The technology of cotton male sterile line seed production uses insect-assisted pollination male sterile line hybrid seed production method, which overcomes the shortcomings of artificial de-pollination hybrid seed production method, which is widely used at present, such as time-consuming and labor-consuming, high intensity of work, complex management of seed production field and high cost of seed production. The labor consumption can be reduced by more than 50%, and the purity of hybrid seeds can be further improved. It is the most ideal way to produce cotton hybrid seeds. The seed production technique of cotton male sterile line is to cultivate recessive low phenol markers.
2019-01-16 -
What are the characteristics of flower arrangement in China? what is the classification of flower arrangement?
China's traditional flower arrangement art is represented by literati flower arrangement, which has four major characteristics. (1) Line characteristics: the art of flower arrangement in China is mainly natural lines. The thread is the bone of flower arrangement in our country. The expressive force of lines is very rich, and different lines have different expressions.
2019-06-25 -
Zheng Fengtian: three Red Lines of Rural Land transfer
In recent years, China's rural land transfer has developed rapidly, but there are also some problems, including forced circulation, one-sided pursuit of transfer scale and speed, and so on, which infringe upon the legitimate land rights and interests of farmers. The problems of non-grain and non-agriculture caused by capital going to the countryside are also more prominent.
2016-03-20 Zheng Fengtian rural areas land circulation three red lines in recent years -
Which of the "three bottom lines" of land reform is the most urgent?
Xi Jinping, general secretary of the CPC Central Committee, presided over the seventh meeting of the Central leading Group for comprehensively deepening Reform on the 2nd, which examined the opinions on rural land expropriation, the entry of collective construction land into the market, and the pilot reform of the homestead system. The meeting pointed out that
2016-03-20 Land reform "three bottom lines " which is the most urgent? -
How to keep flower arrangement fresh for a long time? what are the characteristics of flower arrangement art in China?
China's traditional flower arrangement art is represented by literati flower arrangement, which has four major characteristics. (1) Line characteristics: the art of flower arrangement in China is mainly natural lines. The thread is the bone of flower arrangement in our country. The expressive force of lines is very rich, and different lines have different expressions.
2019-06-25 -
Three red lines of grain reserve are planned to enter overseas collection and storage for the first time.
Brewing overseas collection and storage: the first mention of grain reserves three red lines our reporter Zhang Xu in Beijing reported that China Grain Storage is in transition. In early September, the China National Grain Reserve Management Corporation issued an official statement that the grain security reserve system should establish total grain reserves and grain reserves.
2016-03-20 Central Reserve Grain head lift Grain Reserve three Red Line brewing marching