Path analysis of baby corn yield
2001
Koauychai, P.(Rajamangala Institute of Technology. Nakhon Si Thammarat Campus, Nakhon Si Thammarat (Thailand)) | Sereeprasert, V.(Prince of Songkla Univ., Songkhla (Thailand). Faculty of Natural Resources. Dept. of Plant Science) E-mail:[email protected] | Soonsuwon, W.(Prince of Songkla Univ., Songkhla (Thailand). Faculty of Natural Resources. Dept. of Plant Science) | Eksomtramage, T.(Prince of Songkla Univ., Songkhla (Thailand). Faculty of Natural Resources. Dept. of Plant Science)
Association between yield of baby corn with other characters was analyzed using path analysis. The independent characters included number of plants harvested, plant fresh weight, number of ears harvested, weight of unhusked young ears, weight of husked young ears, number of ears per plant, number of large size ears, number of medium size ears, number of small size ears. The data were obtained from yield testing plots planted during January to April 1999 at the experimental field of the Faculty of Natural Resources, Prince of Songkla University, Hat Yai, Songkhla. Entries in the test consisted of 72 single-cross hybrids, 9 S sub(4)-inbred lines which were the parents of the hybrids and 9 checked varieties. All entries were planted in 2-row plots, 5 meters long. The spacings were 75 cm between rows and 25 cm between hills with 2 plants/hill. The approximate population density was 106,667 plants/hectare. The experimental design was 9*10 simple rectangular lattice with 2 replications. Three different models of path analyses were investigated, varying in number of kind of variables included in each model. The models revealed that weight of husked young ears and number of ears harvested had highest direct effect on yield of baby corn. Among the three models, Model 3, which included 7 variables in the analysis, was considered the most appropriate model with R sup(2) value of 0.960.
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