Keragaan Lima Varietas Melon (Cucumis melo L.) dengan Perlakuan Irigasi Cincin di Rumah Kaca
Breeding improved melon varieties requires diverse genetic materials. The expression of genetic variability demands a suitable environment, one of which is the water availability for plants. The objectives of this study were to: (1) study the effect of variety (V), irrigation treatment (I), the VxI interaction on melon traits, (2) estimate variance components and broad-sense heritability of melon traits, (3) estimate water productivity and water use for each melon plant. The study was conducted in a greenhouse at the Cikabayan Experimental Station, Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Darmaga, Bogor, from September to November 2017. The experiment was arranged in a nested design with two factors and five replications. Five melon varieties (‘Honey Dew’, ‘Honey Blonde’, ‘Brilliant’, ‘Athena’, dan ‘Serenade’) were randomized in each replication at each level of irrigation treatments (P1 = 784 L, P2 =1,127 L, and P3 = 1,407 L). The variety effect was significant for stem diameter, leaf length, leaf width, days of male flowering, days of hermaphrodite flowering, fruit length, and sugar content. Total soluble solids and leaf length had a broad-sense heritability >50%. The irrigation treatment effect was not significant on all traits, but the VxI interaction effect was significant on days of harvest. Irrigated water productivity was 153.7 kg m-3 and water use per plant for P1, P2, and P3 irrigation treatments was 38.58 L, 50.78 L, and 73.19 L, respectively.
Keywords: heritability, melon breeding, water productivity