Studi Keragaman Genetik Dua Puluh Galur Inbred Jagung Manis Generasi S7

Abstract

The genetic diversity is basic need of plant breeding. The experiment aimed to evaluate the genetic diversity of twenty sweet corn inbred lines, to estimate broad sense heritability, genetic correlation and path analysis, and grouping the sweet corn inbred lines. Randomized complete block design was used with three replications. ANOVA, genetic correlations, and cluster analysis were used to analysis the data. The genetic diversity coefficients was indicate the high genetic diversity, that was potential for hybrid sweet corn breeding programs. Most characters had high broad sense heritability. The ear weight has a significantly positive correlation with plant height, ear height, number of seed rows, ear length and ear diameter. The ear length and ear diameter have a high direct influence on the ear weight. Cluster analysis grouped the inbred lines into three groups at 70% similarity coefficient level. The group which have the lowest similarity coefficient level indicated wide genetic distance. The wide genetic distance groups can be used as a parents for composing of hybrids with high level of heterosis.

Parameter Genetik Karakter Agronomi pada Galur F1 Padi Hasil Persilangan Galur Murni dan Kultivar Lokal Indonesia

“…Persilangan yang terkait dengan pengembangan varietas inbrida akan diikuti dengan seleksi populasi F 1 yang seragam kemudian dilanjutkan populasi bersegregasi hingga didapatkan galur murni (Haryanto et al 2017) dengan keunggulan tertentu sesuai dengan tujuan. Pada saat melakukan seleksi, informasi korelasi dan heritabilitas menjadi hal penting (Yuwono et al 2016). Informasi tentang korelasi antar karakter dapat mempermudah proses seleksi sehingga menyederhanakan pekerjaan.…”