Breeding method for flue-cured tobaccos of new specie

Abstract

The invention relates to a breeding method for flue-cured tobaccos of a new specie HN0508 (number five Hunan tobacco). Firstly, with Coker176 being a female parent and YZ-03 being a male parent, an advanced-generation stable material LS-1which is formed by seven generations of breeding is obtained; then, with the self-fertile advanced-generation material LS-1 being a female parent and K326 being amale parent, hybridized combination is prepared, and through disease-resistance individual plant breeding of bacterial wilt and black shank disease nurseries and comparative tests of excellent strains and plant rows, the new specie HN0508 (number five Hunan tobacco) excellent in comprehensive performance is obtained and gets approved by national tobacco specie committee in 2015, wherein the approval serial number is 201512. In this way, the problems are solved that the planting structure of a flue-cured tobacco specie at flue-cured tobacco production regions of Hunan province is monotonous, and the self-fertile level is low, and the process of breeding the flue-cured tobacco specie is more rapidly developed.

Description

technical field [0001] The invention relates to the field of flue-cured tobacco breeding, in particular to a breeding method for a new flue-cured tobacco variety HN0508 (Xiangyan No. 5). Background technique [0002] Flue-cured tobacco is an economic crop widely planted in my country. It is the main raw material crop for cigarette production and an important economic crop in China. The variety is the basis for the production of high-quality tobacco leaf raw materials and one of the important factors affecting the quality of tobacco leaves. Excellent varieties play a very important role in improving the quality of tobacco leaves, increasing the benefits per unit area, and resisting tobacco pests and adverse environmental factors. Therefore, the advantages and disadvantages of flue-cured tobacco varieties have significant social and economic benefits. For a long time, the main varieties used in my country's flue-cured tobacco production have been a few varieties such as Yunya...

AI Technical Summary

Problems solved by technology

Hunan is the main flue-cured tobacco production area in my country, but the single planting structure of flue-cured tobacco varieties and low self-cultivation level have restricted the development of Hunan tobacco leaves. High yield, easy-to-roast and strong adaptability are the breeding goals, and the joint research of multiple breeding methods such as hybrid breeding and heterosis utilization is the primary problem to be solved at present.

Images