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Study on Utilization of Maize Inbred-lines' Heterosis in Different Ecological Areas

Yue Rao-hai

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Abstract

maize inbred-lines(5 from Northeast,5 from Huang huihai and 5 from Guizhou which were improved in Henan) used were crossed according to Griffing's method four, 105 single crosses were got complete random block design taken, analyzing ten character'GCA, SCA, TCA which are plant height, ear position, ear length, ear rows, and so on, and estimated each inbred-line's SCA. The result showed that all inbred-lines had remarkable variance of GCA, SCA. Comprehensive characters of inbred-line Z684, Z141, Z442, Chang7-2, 246 were outstanding and these five inbred-lines had been improved in Huan huihai area.

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What this paper is about

maize inbred-lines(5 from Northeast,5 from Huang huihai and 5 from Guizhou which were improved in Henan) used were crossed according to Griffing's method four, 105 single crosses were got complete random block design taken, analyzing ten character'GCA, SCA, TCA which are plant height, ear position, ear length, ear rows, and so on, and estimated each inbred-line's SCA. The result showed that all inbred-lines had remarkable variance of GCA, SCA. Comprehensive characters of inbred-line Z684, Z141, Z442, Chang7-2, 246 were outstanding and these five inbred-lines had been improved in Huan huihai area.

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Available abstract

maize inbred-lines(5 from Northeast,5 from Huang huihai and 5 from Guizhou which were improved in Henan) used were crossed according to Griffing's method four, 105 single crosses were got complete random block design taken, analyzing ten character'GCA, SCA, TCA which are plant height, ear position, ear length, ear rows, and so on, and estimated each inbred-line's SCA. The result showed that all inbred-lines had remarkable variance of GCA, SCA. Comprehensive characters of inbred-line Z684, Z141, Z442, Chang7-2, 246 were outstanding and these five inbred-lines had been improved in Huan huihai area.

Key concepts: Inbred strain, Heterosis, Biology, Line (geometry), Agronomy, Veterinary medicine, Genetics, Mathematics

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