The performance of soybean genotypes as the result of hybridization on leaf rust disease

Abstract

Soybean is the third commodity of main food commodities after rice and corn. The demand for soybean every year is increasing, while soybean production is still low. One factor which might be the delimiter of soybean production is leaf rust disease caused by Phakopsora pachyrhizi, Syd. The purpose of this research is to know the performance from seven soybean genotypes as the result of F5 generation hybridization on leaf rust diseases. The experimental design used was Randomized Cluster Design (RCD) consisting of 13 genotypes with 3 replications. 1 Plot consists of 5 rows of plants. The research result showed that (GHJ-3 x Rajabasa) indicated a short-aged variety that was 86 hst compared to the other soybean genotype hybridizations, however Malabar was more short-aged than P3R that was 84 hst. The result of code rating showed that (GHJ-3 x Rajabasa), P3D (GHJ-3 x Dering), and P3P2 (GHJ-3 x GHJ-2) was 123 which meant R (Resistant), while the code rating of the other genotypes showed 111 which meant I (Immune).