Field experiment method capable of improving sugarcane high glucose germplasm selecting efficiency

Abstract

The invention relates to a field experiment method capable of improving sugarcane high glucose germplasm selecting efficiency. The field experiment method comprises the steps of performing hybridizingwith high glucose parents to prepare a hybrid, breeding seedlings in a seeding raising green house at the middle ten days of April, when 5-6 pieces of euphylla grow, transplanting the seedlings to aseedbed according to the planting distance of 10cm and the row spacing of 20cm, and arranging the seedbed outdoors, wherein each hybrid uses parents with the highest sucrose percentage as contrast; before contrast planting, performing seedling raising, wherein the interval of the seedling raising time and the sowing time of the seedlings is about 1 month as the best, and the seedlings can realizejointing on the seedbed to form seek stems, at the end of November or the beginning of December, measuring the brix of the single seedling and the contrast group, and performing comparing with the contrast group, and enabling germplasm of which the brix is 0.5% or above higher than the average brix value of the contrast group to be reserved and enter the subsequent test for further evaluation. Compared with a conventional field experiment, the test fields can be saved, the recruitment cost can be saved, the screening process of high glucose germplasm can be accelerated, the selecting efficiency can be improved, and besides, the screening applicability of the high glucose germplasm can be improved.

Description

technical field [0001] The invention belongs to the technical field of sugarcane hybrid breeding, in particular to a field test method for improving the selection efficiency of sugarcane high-sugar germplasm. Background technique [0002] Sugar cane is the main sugar crop in my country, and the sucrose production accounts for more than 90% of the total sugar in my country. Hybrid breeding is currently the main way to cultivate new varieties of sugarcane, widely adopted by countries all over the world. Sucrose content is an important target trait in sugarcane hybrid breeding. In sucrose production, sucrose content is an important index to reduce production costs and increase sugar yield. Therefore, the screening and breeding of high-sugar germplasm is of great significance for sugarcane high-sugar breeding. [0003] The "five-field system" breeding is a traditional selection procedure adopted by sugarcane hybrid breeding in my country. The five fields are: hybrid field, see...

AI Technical Summary

Problems solved by technology

Since the time of transplanting to the field is relatively late, screening is not carried out in the current year (equivalent to about half a year after transplanting, which is invalid growth), but selection is made at the end of the next year (perennial root), w

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