Darmawan Asta Kusumah
PT. Esa Sampoerna, Gd. Esa Sampoerna Lt 7 Jl. Dr. Ir. H. Soekarno No. 198 Surabaya, Jawa Timur 60177, Indonesia

Published : 3 Documents
Articles

Found 3 Documents
Search

Evaluasi Daya Hasil Cabai Hibrida dan Daya Adaptasinya di Empat Lokasi dalam Dua Tahun Syukur, Muhamad; Sujiprihati, Sriani; Yunianti, Rahmi; Kusumah, Darmawan Asta
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 1 (2010): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

Show Abstract | Original Source | Check in Google Scholar | Full PDF (167.75 KB)

Abstract

The aim of the experiment was to study the performance of yield components of  eight pepper hybrids and their adaptation at four locations in two years (2008 and 2009). The experimental design used was Randomized Complete Block Design (RCBD), three replications as a block was nested in the location. Plant materials were eight hybrids (IPB CH1, IPB CH2, IPB CH3, IPB CH25, and four commercial hybrids were Adipati, Biola, Gada, and Hot Beauty). The IPB CH3 hybrid produced higher fruit width, fruit length, fruit weight, fruit flesh density and yield per plant compared to commercial hybrids. Days to flowering and days to harvesting of IPB CH3 was earlier than that of Hot Beauty. The performance of yield characters in Boyolali, Rembang and Subang was better than that in Bogor. The IPB CH3 hybrid was specifically adapted to Subang and Rembang, while IPB CH1, IPB CH2, IPB CH25 were suitable for Boyolali.   Keywords: fruit, yield components, genotype x location interaction, Capsicum annuum L.
Parametric Stability Analysis for Yield of Chili Pepper (Capsicum annuum L.) Syukur, Muhamad; Sujiprihati, Sriani; Yunianti, Rahmi; Kusumah, Darmawan Asta
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 1 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

Show Abstract | Original Source | Check in Google Scholar | Full PDF (27.11 KB)

Abstract

The objective of this study was to identify the stability of seven hybrid chili pepper genotypes that have been developed at Genetics and Plant Breeding Laboratory, Department of Agronomy and Horticulture IPB. The study used eight yield stability analyses and Additive Main Effect Multiplicative Interaction (AMMI) methods. The design was randomized complete block design with three replications as blocks using the genotypes of IPB CH1, IPB CH2, IPB CH3, IPB CH5, IPB CH25, IPB CH28, IPB CH50, and fi  ve commercial varieties, i.e. Adipati, Biola, Gada, Hot Beauty and Imperial. These genotypes were planted at six different locations at Ciherang, Leuwikopo, Tajur, Subang, Rembang and Boyolali. IPB CH28, IPB CH25, IPB CH1 and IPB CH2  were more stable cultivars than IPB CH3, IPB CH5, IPB CH50, Adipati and Biola, which had 10, 9, 8, and 6 out of all 10 stability statistics used, respectively. IPB CH28 and IPB CH25 being the most stable cultivars. IPB CH3 was the best genotype compared to the checks based on pair wise GxE interaction test. Based on post predictive success, the AMMI2 model was able to explain 85.51% of the interaction-influenced variation. The stable genotypes in six locations were IPB CH1, IPB CH2, IPB CH25, IPB CH28, and IPB CH50. IPB CH3 genotype was locally adapted for Subang.   Keywords: chili pepper, multi location trials, yield stability
Non Paramectric Stability Analysis for Yield of Hybrid Chili Pepper (Capsicum annuum L.) Across Six Different Environments Syukur, Muhamad; Sujiprihati, Sriani; Yunianti, Rahmi; Kusumah, Darmawan Asta
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 1 (2014): JURNAL AGRONOMI INDONESIA
Publisher : Bogor Agricultural University

Show Abstract | Original Source | Check in Google Scholar | Full PDF (223.076 KB)

Abstract

ABSTRACTThe objectives of this study were to evaluate several chili pepper hybrids whith high yielding character and stable at six environments based on some non-parametric stability analyses, and to study the correlation among the stability of non-parametric methods. The hybrid of chili pepper (7 candidates varieties and 5 commercial hybrid cultivars) were grown in a randomized complete block design with 3 replications in 6 different environments. Ten nonparametric stability methods were used to identify the stable genotypes.  According to the SI(3), RS, NPi(1), NPi(2), NPi(3) and NPi(4) stability parameters, Imperial was the most stable hybrid. According to the SI(1), SI(2) and TOP  stability parameters and yield, IPB CH3 was the most stable hybrid.  In this study, the high TOP values were associated with the yield. Nonetheless, the results of the other non parametric (SI(6), NPi(3) and NPi(4)) were negatively correlated to the yield. The results also revealed that based on the non parametric stability test, the results could be classified into 2 groups, according to the agronomic and biological stabilities. Keywords: chili pepper, environment, non-parametric stability, yield