Device for online high-speed non-destructive automatic sorting of haploid corn kernels

Abstract

The invention discloses a device for online high-speed non-destructive automatic sorting of haploid corn kernels based on near infrared spectroscopy. The device mainly includes a feeder, a conveyor belt, a spectrum detection system, a data processing system, a sorting system, a discharging hopper, and a haploid corn kernel receiving box and a polyploid corn kernel receiving box. To-be-sorted cornkernels are placed in the feeder, are automatically arranged into a line, and are sent to an online spectral collection field of view, spectral data are collected at high speed, the data are discriminated by an existing haploid and polyploid corn kernel discriminant model in the data processing system, and a discrimination result is submitted to the sorting system to achieve automatic high-speed non-destructive sorting of corn kernels.

Description

technical field [0001] The invention relates to a device for sorting haploid corn grains, in particular to a near-infrared online high-speed non-destructive automatic sorting device for haploid corn grains, which belongs to the field of corn breeding and rapid detection. Background technique [0002] Haploid is a plant differentiated and grown from an individual, tissue or cell with the number of gamete chromosomes, and the number of chromosomes in the somatic cells of the plant is half the number of chromosomes in the parental cells. The use of haploid technology to obtain pure lines and then select inbred lines can speed up the process of selection and improve the efficiency of selection. It is one of the fast and efficient methods in modern plant breeding. Maize haploid plants are developed from haploid corn kernels, and haploid kernels are induced by parthenogenesis inducing lines, and the induction rate of different inducing lines is significantly different, with a high...

AI Technical Summary

Problems solved by technology

Computer vision technology uses the difference in color between haploid and polyploid for color sorting, puts the seeds on a moving conveyor belt, collects seed images, and performs image processing. Haploid grains are judged by using a mechanical mechanism for sorting at the end. The sorting speed can reach 500 grains / min, and the sorting success rate is greater than 80%. However, this system requires the grain embryo to face up, and at the same time, the expression of pigment genes is weak , Grain tumbling during the transmission process, shadows caused by light, and seed surface contamination will cause errors, and haploid and pollen-contaminated grains cannot be distinguished; the NMR automatic identification and sorting system uses the haploid and pollen induced by high-oil induction lines The difference in oil content between polyploids is sorted. The average speed of this system is 4s / grain, and the accuracy rate is 92.3%. The bias is very low, which is not suitable for large-scale breeding production; near-infrared spectroscopy combined with pattern recognition requires multiple scans for each corn seed, and the time is about 1.0-1.3min. The correct rate of haploid recognition is 85%, and the correct rate of polyploid recognition 100%, this method is limited to the laboratory research stage, and the spectral collection time of a single corn kernel is too long to meet the needs of practical applications

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