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W. Patrick Wechter, Ralph A. Dean, and Claude E. Thomas

Two 24-mer primers, MUSKFOM I and MUSKFOM II, were developed that amplify a 1.5-kb DNA fragment in race 1 Fusarium wilt resistant muskmelon (Cucumis melo L.), but not in race 1 susceptible germplasm tested. Three race 1 resistant cultivars and two race 1 resistant breeding lines as well as eight race 1 susceptible lines were analyzed using the two sequence-specific primers in the polymerase chain reaction. These primers should prove valuable for nondestructive determination of Fom 2 gene introgression in breeding programs.

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Konstantinos Anagnostou, Molly Kyle, and Rafael Perl-Treves

We have studied the relationship of resistance to watermelon mosaic virus (WMV), zucchini yellow mosaic virus (ZYMV), papaya ringspot virus (PRSV), and powdery mildew (PM) in melon (Cucumis melo). We have confirmed monogenic dominant inheritance of these four resistances and report that PI414723-4S3, which was initially selected as a source of ZYMR, is also a source of dominant monogenic resistance to PRSV. Further, we observed departure from independent assortment for resistance to WMV and ZYMV in a study of 73 (UC Top Mark × PI414723-4S3) F3 families (χ2 = 39.87 significant at both 0.01 and 0.05 levels), indicating linkage between Wmv and Zym. The map distance between these resistance genes calculated from the number of recombinant families (RF% = 9.58) was 10.5 cM. Compari-sons among WMV, PM, ZYMV-PM, PRSV-PM, ZYMV-PRSV, and WMV-PRSV of 48 (TM × PI414723-4S3) F3 families, which were screened with all four pathogens, showed no consistent cosegregation.

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Joseph N. Wolukau, Xiaohui Zhou, and JinFeng Chen

designed to identify AFLP markers linked to GSB resistance in PI 420145. Materials and Methods Plant and fungal material. PI 420145 ( Cucumis melo subsp. melo ) was originally collected from Japan and has resistance to D. bryoniae under field

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Yasutaka Kano

Methods Plant materials. Earl's Knight Natsukei No.2 ( Cucumis melo L.) melon seeds were planted in a seedbed on 20 Mar. 2004 with nursery plants spaced at 40-cm intervals in a plastic film greenhouse on 20 Apr. 2004. The flowers that opened on

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Jun Matsumoto, Hideyuki Goto, Yasutaka Kano, Akira Kikuchi, Hideaki Ueda, and Yuta Nakatsubo

activity of α-galactosidases and acid invertase during muskmelon ( Cucumis melo L.) fruit development J. Plant Physiol. 151 41 50 Gao, Z. Petreikov, M. Zamski, E. Schaffer, A.A. 1999 Carbohydrate metabolism during early fruit development of sweet melon

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S.M. Lutfor Rahman*, Jeffrey T. Baker, Raul I. Cabrera, Dennis J. Timlin, and Bruno Quebedeaux

We collected growth and yield data on eight cantaloupe cultivars and constructed a simple phenology model that uses local weather data to allow growers to quantify phenological growth and development to project harvest dates. Main vine plastochron interval (PI), time to harvest, and final yield were determined. PI was calculated for each cultivar × transplanting date combination as the reciprocal of the slope of main vine node number vs. growing degree days. Among the tested cultivars,`Ovation' and `Primo' produced significantly higher yields of marketable melons (51.3 Mg/ha, 49.5 Mg/ha, respectively), whereas `Santa Fe' produced the lowest (28.6 Mg/ha). The rest of the tested cultivars produced on average 34.4 Mg/ha. Fruit weight was significantly higher in `Morning Ice' (2.7 kg/fruit) and lowest in `Mission' (1.4 kg/fruit). There were also significant differences among cultivars in the number of marketable melons/ha, which ranged from 11500 melons/ha for `Morning Ice' to 32300 melons/ha for `Ovation'. Plant dry matter production was higher in `Ovation' and `Mission' than all the other cultivars. The relative days to maturity were significantly higher in `Morning Ice' and `Honey Brew' (115 days) and lower in `Gold Rush' (72 days). There were no differences found in days to maturity for `Mission', and `Ovation'(82 days). The average % of soluble solids content ranged from 9.5 for `Ovation' to 14.5 for `Mission' and `Honey Brew'. The variety cantaloupensis types are earlier in maturity than inodorus types. PI was significantly different for all cultivars. Main vine node number was a useful descriptor of vegetative development for cantaloupes. Procedures for calibrating and fitting the model for these cultivars will be discussed and outlined

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Gene Lester

Within the Cucurbitaceae are two genera, Cucumis and Citrullus (muskmelons and watermelon, respectively), with sweet-tasting fruits. Per-capita consumption of these two genera rank melons (11.6 kg) second only to bananas (12.6 kg) as the most-consumed fruit in the United States. Consumption of melons, especially muskmelon and honey dew fruits, is significant from the standpoint of their nutritional benefits to humans. Orange-fleshed melons provide a person with 100% of their daily requirement of vitamins A and C. Melons also are a significant source of nutrients: sugars, dietary fiber, calcium, iron, potassium, and “phytochemicals.” Phytochemicals are compounds not presently recognized as having nutrient value. Thirty-eight known phytochemicals are in melons and have preventive properties in addition to anti-cancer attributes. Use of beta-carotene-rich melons is important in chemopreventive trials. Melon production and genetic factors may affect human health-beneficial nutrient and phytochemical quality attributes.

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James D. McCreight and William M. Wintermantel

Melon ( Cucumis melo L.) is a fresh vegetable and dessert fruit that may also be cooked, dried, or processed for juice and flavoring. Melon seeds may be roasted and eaten like nuts and are a source of high-quality cooking oil and high-protein seed

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Ana Carolina de Assis Dantas, Ioná Santos Araújo Holanda, Cristina Esteras, Glauber Henrique de Sousa Nunes, and Maria Belén Picó

secondary centers ( Blanca et al., 2012 ; López-Sesé et al., 2003 ; Monforte et al., 2003 ). Cucumis melo is divided into two subspecies, melo and agrestis ( Jeffrey, 1980 ; Kirkbride 1993 ). Attempts to group melon cultivars date back to the classic

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Taifeng Zhang, Jiajun Liu, Shi Liu, Zhuo Ding, Feishi Luan, and Peng Gao

cetyltrimethylammonium bromide Nat. Protoc. 1 2320 2325 Amanullah, S. Shi, L. Peng, G. Zhicheng, Z. Qianglong, Z. Chao, F. Feishi, L. 2018 QTL mapping for melon ( Cucumis melo L.) fruit traits by assembling and utilization of novel SNPs based CAPS markers Scientia Hort