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Key Technology

 

Key Technology: Molecular Breeding Method for Genomic Interval Targeted Selection, GITS


Genomic Interval Targeted Selection (GITS) which researched by HITAR has been successfully applied to the improvement of rice and soybean crop complex traits, and through directional replacement to achieve target traits change and enhancement.

Key technology

Genomic Interval Targeted Selection (GITS) is based on the technology platform of DNA molecular marker genetic linkage map to achieve the traits goal directional transfer and polymerization by establishing the genetic groups, constructing the molecular marker genetic map, and conducting target selection for genome target interval with the help of DNA marker.

Study example

Using GITS principle to realize the change of appearance in Maintainer Zhenshan 97B of three line hybrid rice (grain length, width, chalk, length-width ratio, transparency), keep its genetic background not changed to maintain its properties stability, and improve the male sterile line further. The research case has the support of detailed calculation data and experimental data.

Technical application

GITS breeding technology for improving the seed yield of hybrid rice: using the GITS breeding method to select the genomic targeted interval that can control the elongated uppermost internode (EUI) or stigma exertion. And improve the seed yield of hybrid rice by raising the restorer line height or stigma exertion degree of male sterile line

GITS breeding technology for improving the appearance quality of rice: using the GITS breeding method to select the genomic targeted interval that can control the appearance quality of rice, such as grain length, width, chalk, length-width ratio, transparency, and change the appearance quality of rice to become good-looking.

GITS breeding technology for enhancing the resistance to soybean cyst nematode: using the GITS breeding method to select the genomic targeted interval of soybean cyst nematode resistance of rhg1, rhg2, rhg3 and Rhg4, etc., and improve the resistance level of soybean cyst nematode.

GITS aggregated breeding technology of high protein, high oil and multiple resistances in soybean: A technology by using the GITS breeding method to select and aggregate the genomic targeted interval that related to high protein content, high fat content, drought resistance, virus resistance and cyst nematode resistance, and cultivate high protein, high oil and multiple resistance soybean varieties.