Suwarno, dan Willy Bayuardi
Indonesia Society of Agronomy

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Penentuan Indeks Seleksi Toleransi Kekeringan Galur Dihaploid Padi Sawah Tadah Hujan pada Fase Perkecambahan Akbar, Miftahur Rizqi; Purwoko, Bambang Sapta; Dewi, Iswari Saraswati; Suwarno, dan Willy Bayuardi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 46, No 2 (2018): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.866 KB) | DOI: 10.24831/jai.v46i2.19086

Abstract

Rainfed rice tolerant to drought and high yielding would be an alternative to rainfed lowland areas prone to drought stress. Selection in the early phase of plant growth will accelerate the effort to obtain rainfed varieties. The objective of this experiment was to identify characters that significantly affect the selection of drought tolerance using PEG 6000 concentration of 25% in the germination phase. The experiment was conducted in greenhouse of ICABIOGRAD, Bogor, using a factorial randomized complete block design with three replications. The first factor was 32 rice genotypes while the second factor was 2 levels of PEG 6000, i.e., concentrations of 0 and 25%. The results showed that the correlation analysis and principal component analysis obtain the important characters namely the germination percentage, seminal root length, and the dry weight of seminal roots. Based on discriminant analysis, the index matching value of 96.77% was suitable to distinguish tolerant and sensitive genotypes using PEG 6000 concentration of 25% in the germination phase.
Kandungan Antosianin dan Karotenoid serta Komponen Produksi pada Kacang Panjang Berpolong Ungu dan Hijau Reswari, Helvi Ardana; Syukur, Muhamad; Suwarno, dan Willy Bayuardi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 47, No 1 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (324.367 KB) | DOI: 10.24831/jai.v47i1.23402

Abstract

Breeding improved yardlong bean varieties is not only aimed for yield, but also for enhancing nutritional content such as anthocyanin and carotenoids concentrations. The objectives of this research were to elucidate the anthocyanin and carotenoids concentrations as well as yield components in several yard long bean genotypes. This research was conducted at the Leuwikopo Experimental Station and Post Harvest Laboratory of Department of Agronomy and Horticulture IPB from November 2017 to January 2018. The experiment was arranged in a single-factor randomized complete block design with 4 replicates, involving 15 yardlong bean genotypes. The results showed that Fagiola 2 had relatively high anthocyanin and carotenoids contents. Peleton had higher yield than Kinaya 1, Pangeran Anvi, Parade, and Fagiola 2. Anthocyanin content was not correlated with yield components, whereas carotenoids content was positively correlated with the length of pod stalks, length of pods, weight per pod, chlorophyll a, chlorophyll b, and total chlorophyll. Pod weights per plant were positively correlated with the number of pods per plant (r = 0.81, P<0.01), and can be predicted by a linear model involving number of pods per plant and days to harvest (R2 = 0.75, P<0.01).Keywords: biofortification, chlorophyll, correlation, stepwise regression, Vigna unguiculata var. sesquipedalis