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All Journal Makara Journal of Science
Putro, Karso Suryo
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Gama Melon Parfum, a Potential Melon Genotype Tolerant of Salinity Stress Nugroho, Giri; Chikmawati, Tatik; Sartika, Dian; Yusuf, Adib Fakhruddin; Putro, Karso Suryo; Latifah, Vida Rahma; Daryono, Budi Setiadi; Wibowo, Anjar Tri; Nurhayati, Awik Puji Dyah; Meitha, Karlia; Miftahudin, Miftahudin
Makara Journal of Science Vol. 29, No. 3
Publisher : UI Scholars Hub

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Melona, Tacapa Gold, and Gama Melon Parfum are novel Melon genotypes that have been introduced for cultivation in the saline-prone coastal region of Bocor Beach, Kebumen, Central Jawa. Elevated salt concentrations in the area pose challenges, impacting yield. The potential of these new genotypes for saline land remains unexplored. This study aimed to assess the morphophysiological and molecular responses of these genotypes to salinity stress. Seeds were germinated in cocopeat and ABmix 3000 solution and treated with 220 mM NaCl until harvest. The analysis included morphology, chlorophyll content, proline accumulation, malondialdehyde levels, and gene expression were analyzed. After 1 week of salinity stress, the results showed reduced plant height, leaf number, stomatal density, percentage of opened stomata, and width and length of leaves. The malondialdehyde, proline, and root-shoot dry mass ratio increased. The expression of CSD1-1, P5CR, and late embryogenesis abundant genes increased under salinity treatment. Gama Melon Parfum exhibits salt tolerance, as indicated by higher P5CR gene expression, proline accumulation, and leaf-relative water content. P5CR gene expression, proline accumulation, and leaf-relative water content are valuable indicators of salt tolerance for assessing melon genotypes.
Differential Gene Expression of Ethylene Biosynthesis and Signaling Associated with Climacteric Behaviors in Indonesian Melon Latifah, Vida Rahma; Yusuf, Adib Fakhruddin; Putro, Karso Suryo; Sartika, Dian; Wibowo, Anjar Tri; Nurhayati, Awik Puji Dyah; Meitha, Karlia; Miftahudin, Miftahudin; Daryono, Budi Setiadi
Makara Journal of Science Vol. 30, No. 3
Publisher : UI Scholars Hub

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Fruit ripening in melon (Cucumis melo L.) is a complex developmental process that is characterized by the coexistence of climacteric and non-climacteric varieties within the same species. This study characterized the ripening behavior of four local Indonesian melon cultivars (“Melona”, “GMP”, “Tacapa Gold”, and “Kinaya”) by integrating morphophysio-logical traits with transcriptional expression analysis of ethylene biosynthesis (CmACS, CmACO) and signaling (CmATH, CmEREBP) genes. The results revealed a strong agreement between the phenotypic traits and molecular regulation. “Melona” and “GMP” exhibited a strong climacteric profile, which was characterized by natural fruit abscission, sweet aroma production, and dramatic upregulation of CmACS. Conversely, “Tacapa Gold” aligned with a non-climacteric pro-file, exhibiting neither abscission nor aroma. Notably, “Kinaya” displayed a unique intermediate phenotype, combining a transient peak in CmACO expression and an enhanced softening rate with the absence of typical ethylene-dependent traits. Flesh softening and sugar accumulation progressed across all cultivars, thus confirming the presence of ethylene-independent pathways. Classifying these cultivars based on their specific position along the ripening continuum presents a robust framework for optimizing targeted harvest timing and tailored postharvest management strategies
Co-Authors Awik Puji Dyah Nurhayati BUDI SETIADI DARYONO Latifah, Vida Rahma Meitha, Karlia Miftahudin . Nugroho, Giri Sartika, Dian TATIK CHIKMAWATI Tri Anjar Yusuf, Adib Fakhruddin