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| Genetic Analysis on Single Fruit Seed Numbers and Seed Coat Color of Bitter Melon |
| TAN Shu，CHENG Jiao-wen，CUI Jun-jie，LI Wei-peng，HU Kai-lin * |
| （College of Horticulture， South China Agricultural University， Guangzhou 510642， Guangdong， China） |
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Abstract Taking bitter melon inbred line‘ 29’ and‘ Huizhoudading’ as parent，this study
developed 6 generations（P1，P2，F1，B1，B2，F2）from the cross，and analyzed the inheritance of
single fruit seed number and seed coat color，respectively. The results showed that the single fruit seed
numbers of bitter melon was controlled by 2 pairs of equi-dominant major genes plus additive-dominant
polygenes（E-6 model）．The additive effects and dominant effects of the two major genes were equal.
The dominant effect of polygenes is positive and F1 expresses over-parent heterosis．Seed coat color
of bitter melon was controlled by a pair of dominant genes，black is the completely dominant traits to
brown-yellow．
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Received: 24 January 2013
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