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2011•Xi'nan nongye xuebaoRequires access

Heterosis among CIMMYT Lines and Guangxi Key Inbred Lines in White Maize

MO Fang-hua

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Abstract

Four maize inbred lines of Guangxi(Nan60-1,Improved Nan60-1,Da013 and Hua83-2) and six maize inbred lines from CIMMYT were used as material to analyze the combining ability and genetic relationship using the B.Griffing 4 model.The results showed that the efficiency value of GCA(general combining ability) of inbred Improved Nan60-1 was the highest with the value of 0.58.The line CML268 from CIMMYT had a average GCA value 0.42.The line CML98 from CIMMYT had the greatest relative heterosis with the improved Nan60-1,and the average value of SCA was 1.26.Most of the crosses in this study were consistent with the Temperate germplasm×Tropical germplasm heterotic patterns.

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What this paper is about

Four maize inbred lines of Guangxi(Nan60-1,Improved Nan60-1,Da013 and Hua83-2) and six maize inbred lines from CIMMYT were used as material to analyze the combining ability and genetic relationship using the B.Griffing 4 model.The results showed that the efficiency value of GCA(general combining ability) of inbred Improved Nan60-1 was the highest with the value of 0.58.The line CML268 from CIMMYT had a average GCA value 0.42.The line CML98 from CIMMYT had the greatest relative heterosis with the improved Nan60-1,and the average value of SCA was 1.26.Most of the crosses in this study were consistent with the Temperate germplasm×Tropical germplasm heterotic patterns.

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Available abstract

Four maize inbred lines of Guangxi(Nan60-1,Improved Nan60-1,Da013 and Hua83-2) and six maize inbred lines from CIMMYT were used as material to analyze the combining ability and genetic relationship using the B.Griffing 4 model.The results showed that the efficiency value of GCA(general combining ability) of inbred Improved Nan60-1 was the highest with the value of 0.58.The line CML268 from CIMMYT had a average GCA value 0.42.The line CML98 from CIMMYT had the greatest relative heterosis with the improved Nan60-1,and the average value of SCA was 1.26.Most of the crosses in this study were consistent with the Temperate germplasm×Tropical germplasm heterotic patterns.

Key concepts: Heterosis, Germplasm, Inbred strain, Biology, Hybrid, Agronomy, Biotechnology, Genetics

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Heterosis among CIMMYT Lines and Guangxi Key Inbred Lines in White Maize — Research Paper | ScholarLens