The main utilization of soybean with large seed size in Indonesia is for industrial (tempeh) raw material. The aim of this research was to select soybean genotypes based on seed size and yield. Experiment was conducted at Jambegede Research Station (Malang), from March until June 2014 using 150 soybean genotypes. The selection revealed the existence of variability among genotypes. A simultaneously selection successfully obtained eight genotypes with yield >2.53 t/ha and seed size > 15.8 g/100 seeds. These selected genotypes prospective for source of tempeh material and need to examine its yield recovery, nutrition (protein) and sensory characteristic.Soybean is an important commodity in Indonesia. From the total supply of soybeans in Indonesia, both imported and domestic, 70% is for tofu and tempeh and 30% for other food needs [1]. Tempe is essential menu in the daily consumption of most Indonesian society,

Abstract. Krisnawati A, Adie MM. 2016. Variability on morphological characters associated with pod shattering resistance in soybean. . Pod shattering is one of the major constraint associated with soybean production during dry season in Indonesia. The objectives of the study were to investigate varietal difference of pod shattering and to identify the morphological pod characters related to pod shattering. The field study was carried out in Blitar (East Java, Indonesia) during the dry season 2015. Morphological traits of pod were studied for their association with pod shattering trait in 30 soybean genotypes. The results showed significant differences between genotypes for all characters studied. The degree of shattering varied among genotypes with shattering percentage ranging from 2.5% (G511H/Argom//Argom-2-1) to 100% (Grobogan) with mean of 30%.However, among the 30 genotypes studied, 13 genotypes were relatively resistant, 11 genotypes moderate, 1 genotype susceptible, and 5 genotypes were very highly susceptible. Further path coefficient analysis indicated direct effects of the pod wall thickness and pod length on shattering percentage while other causal effects were small. These characters (pod wall thickness and pod length) may play role as determinant factors in pod shattering resistance. Therefore, soybean resistance to pod shattering could be enhanced by increasing thickness of the pod wall.

A yield loss caused by pod shattering is one of the obstacles to the improvement of soybean productivity in tropical areas. The aim of this study was to identify the resistance of soybean genotypes to pod shattering as affected by agronomical and morphological characters. The field study was conducted in Malang, Indonesia, using 150 soybean genotypes. Data were collected on agronomical traits, the percentage of pod shattering, and pod morphological traits. Identification for shattering resistance was done as per oven dry method. Percentage of pod shattering was ranged from 0 % up to 100 % shattering with a mean of 58.11 %. Pod shattering was found to be negatively correlated with a number of pod per plant, the thickness of the pod, and Y/Z (seed weight and pod weight ratio).

Soybean pod damaged by pod sucking bug (Riptortus linearis) is one of the constraint within soybean yield improvement in Indonesia. The research aimed was to identify the resistance of soybean genotypes to pod sucking pest. The experiment was conducted in Iletri's screen house from March to June 2015. The experiment was arranged in Randomized Completely Block Design using 10 soybean genotypes with three replicates. The soybean resistance was evaluated using no-choice test. Data collected on number of pod/plant, number of seed/plant, seed weight per plant, number of attacked pod/plant, and number of attacked seed/plant. The result showed that the lowest percentage both of pod and seed damage was G511H/ Anjasmoro//Anjasmoro-2-8, that was 25.83 % and 19.12 %, respectively. Based on the value of the percentage of seed damage, there were five susceptible genotypes, three moderately resistant, and two resistant genotypes.

Soybean is a high protein and source of functional food. Ten soybean promising lines were characterized for its agronomic characters and nutrition contents (protein, lipid, and isoflavone) in eight soybean production centers in Indonesia on 2012. Soybean lines of K/IAC100-64-1004-1037, K/IAC100-997-1035, and IAC100/K-60-1092-1141 have total isoflavone 398.50 ppm, 396.69 ppm, and 394.77 ppm, respectively. The seed yield were 2.70 -2.82 t/ha, protein content from 34.79 -37.44%, lipid content from 17.34 -19.18%, seed weight from 11.53 -15.33 g, and the days to maturity of 83 days. These lines prospective to be released as high yielding and high isoflavone soybean varieties in Indonesia.