Abstract
One way to increase the genetic diversity of Ciherang as the superior variety is to cross Ciherang with the donor B11143D line as a New Plant Type (NPT) rice. This study aimed to obtain Ciherang X B11143D lines with the best vegetative characteristics in the field. The research was conducted in rice fields in Talagasari Village, Telagasari District, Karawang Regency, from May to September 2023. This experiment used a single-factor Randomized Block Design (RBD) with three replications of 22 treatments, consisting of 19 Ciherang X B11143D lines and three comparison varieties. The effect of treatment was studied using analysis of variance. The results showed that the rice lines significantly influenced the vegetative characters of Ciherang X B11143D lines in Telagasari, Karawang Regency. Based on the observed characters, several lines were selected i.e. 124.2.3, 94.3.3, and 20.4.4 lines. Those three lines chosen as backcrossing lines performed similarly compared to Ciherang as recurrent parent and inherited several important traits for rising productivity from the B11143D line as donor parent, namely the length and area of flag leaf, the total number of tillers, and the number of productive tillers, which were significantly higher than Ciherang.
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