Multi-purpose evaluating method for sugarcane family

Abstract

A sugar cane family comprehensive assessment method comprises a family and combination assessment and a family offspring individual selection. The sugar cane family offspring, namely seedling is subjected to core testing and the large-area commercial variety is used as the control variety and the technical character performance and agronomic character performance of offspring and control variety are detected at mature stage, and the important characters of parents and family are respectively analyzed using a R software, namely general combining ability GCA and special combining ability SCA of sugar cane main unit-area sugar content. The parent paternity and maternity are assessed according to the general combining ability GCA to screen good male parent and female parent. The family strength and weakness analysis is performed according to the special combining ability SCA of family sugar content and the other character and the performance of the control variety and thus the selection rate of tested family is calculated and the selection number of good individual is determined according to the family offspring number. The sugar cane family comprehensive assessment method performs the seed selection and parent and combination assessment, thus the influence of environment and human factor on the selection is greatly reduced therefore the seed selection is more quick and accurate.

Description

Technical field: [0001] The invention belongs to sugarcane variety selection technology, in particular to a new comprehensive evaluation method of sugarcane family. Background technique: [0002] At present, the selection and breeding of domestic sugarcane varieties are all based on single plant selection. Since the performance of the offspring is easily affected by the environment, field management level, and the experience or emotions of the selectors, the selection results of the same combination in different years, different plots and even different selectors may not be the same, and some may even be quite different. The existing problems are mainly manifested in: [0003] 1. The basis for selection is only field performance, without analyzing the genetic combining ability of the family or combination, and the stability of the selected offspring is poor. [0004] 2. The existing methods only speculate on the quality of the parents based on the field performance of the ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a comprehensive evaluation method for sugarcane families, and solve the problem that the breeding efficiency of sugarcane varieties is not high due to the influence of environmental and human factors

Images