Application of anther Culture technique in Rice breeding
Anther culture using the first generation of disease-resistant plants of backcross can transfer disease-resistant genes into japonica rice in a short time, which speeds up the process of disease-resistant breeding of japonica rice. Zhejiang Agricultural University has been matching since 1975. Anther culture was carried out in 1976 and Dan 209, a variety resistant to rice blast and bacterial blight, was bred in 1977. After only 3 years, the resistance genes of two diseases were transferred at the same time, and the breeding speed and efficiency greatly exceeded the conventional research methods of Japanese scholars. This study also discussed the way of producing original seed by anther culture in improved variety breeding. The experiment shows that the pure seed of anther culture has a certain purification and rejuvenation effect compared with the original seed of "three nursery method". At present, anther culture resistant varieties have been used as the source of resistance to late japonica rice.
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Huayu 560 (Rice)
Characteristics: this variety is a conventional japonica rice variety. The whole growth period of this variety is 160.1 days in southern Liaoning, southern Xinjiang and Beijing-Tianjin, which is 3.6 days later than that of Jinzhu 1. The plant height is 97.4cm, the total number of grains per panicle is 104.8, the seed setting rate is 90.8%, and the 1000-grain weight is 27.1g. Rice blast is grade 3. Main indicators of rice quality: head rice rate 69.4%, chalky rice rate 17%, chalkiness 1.7%, gel consistency 82 mm, amylose content 16.6%. Production performance: participated in the North in 2002
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Huhongzao No. 1 (Rice)
Breeding unit: Rice Sorghum Research Institute, Sichuan Academy of Agricultural Sciences. Approval: approved by Sichuan crop Variety approval Committee in 1986, Hunan crop Variety approval Committee in 1988, and the National crop Variety approval Committee in 1991. Variety registration number: GS01018-l990. Variety source: 1277 / Hong410. Characteristics: early indica mid-maturing varieties. The seedling stage grows vigorously, the tiller is medium, the leaf color is dark green, and the plant height is about 75 cm.
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