Inheritance of yellow line relative length of cucumber fruitChinese Full Text
LI Dan-dan;MA Guang-shu;TIAN Li-bo;LIU Fang;Agronomy College,Heilongjiang Bayi Agricultural University;Horticultural College,Hainan University;
Abstract: 【Objective】The genetic characteristics of yellow line relative length（ratio of yellow line length to fruit length,referred as ratio of yellow line hereinafter）of cucumber fruit was studied to provide theoretical basis for breeding of cucumber varieties with high fruit appearance quality.【Method】The inbred lines（9501with longer yellow line and 9502 with short yellow line）,and their F1,F2 and backcross（B1and B2）generations were used to analyze the inheritance of the yellow line ratio of cucumber using ABC joint analysis method and major gene plus polygene model genetic analysis method.【Result】ABC joint analysis showed that the inheritance of yellow line ratio followed the additive and dominance model,and the additive effect（[d]）and dominance effect（[h]）were-34.673and-32.037,respectively.Major gene plus polygene model genetic analysis showed that the inheritance of yellow relative line was controlled by a major gene with additive-dominance effects plus polygene with additive-dominance effects.Heritability values of the major genes（h2mg）of B1,B2 and F2population were 72.79%,67.81%and 81.07%,respectively.Heritability values of poly-genes（h2pg）were 26.34%,25.93%and 17.83%.The major gene plus poly-genes effect（[d]）and dominance effect（[h]）were-41.78and-35.96,respectively.Both methods showed that negative additive effect and dominance effect existed in the inheritance of cucumber yellow lineratio.【Conclution】The yellow line ratio was controlled majorly by major gene and partly by polygene.It was rarely affected by environment and was suitable for early generation selection.
- DOI：
10.13207/j.cnki.jnwafu.2014.09.019
- Series：
- Subject：
- Classification Code：
S642.2
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