Assessment of General and Specific Combining Ability and Heterosis of some Cucumber (Cucumis sativus L.) Fresh Type Lines through Half Diallel Analyses

Document Type : Research Article

Authors

1 PhD Student, Department of Horticultural Sciences, Faculty of Agriculture, Guilan University, Rasht, Iran

2 Assistant Professor, Department of Horticultural Sciences, Faculty of Agriculture, Guilan University, Rasht, Iran

3 Associate Professor, Department of Horticultural Sciences, Faculty of Agriculture, Guilan University, Rasht, Iran

4 Assistant Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture, Lorestan University, Khoramabad, Iran

5 Assistant Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture, Guilan University, Rasht, Iran

Abstract

Assessment of general and specific combining , heterosis and genes action for traits until the advention of the first female flower, time to first harvest, the number of fruit branch main and plant height up to first fruit the were experiment half diallel 7×7 second and fourth Griffing method using a fixed model for a number cucumber lines in 2014. Result of variance analysis showed significant differences among genotypes. Mean squares of general combining and specific combining revealed significant differences for all traits. These reflects the importance of both addative and dominance effects genes of inheritance traits. Specific combining for traits until the advention of the first female flower and number of fruit branch main was futher general combining which reflects the non - addative genes action. For traits time to first harvest and fruit plant height up to first fruit due to the high general combining controlled by addative and non -addative genes action. Line B10 and B12 due to general and specific combining ability for seed production of hybrid cucumber is desirable and recommended.

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