2012 & 2013 Cucurbit Genetics Cooperative 35 & 36 CGC Coordinating Committee Chair/Editor: Cucurbit Genetics Cooperative Todd C. Wehner Raleigh, NC, USA Associate Chairs/Editors: Angela R. Davis Davis, CA, USA Linda Wessel-Beaver Mayagüez, PR, USA Timothy J. Ng College Park, MD, USA (Treasurer) Zhanyong Sun Nanning, Guangxi, China CGC Assistant Editors: 35-36 Cucumber: Rebecca Grumet East Lansing, MI, USA Melon: Kevin Crosby College Station, TX, USA Watermelon: Amnon Levi Charleston, SC, USA Cucurbita spp.: James Myers Corvallis, OR, USA Other genera: Tusar Behera Indian Ag. Res. Inst, India CGC Gene Curators and Gene List Committee Cucumber: Yiqun Weng Madison, WI, USA Todd C. Wehner Raleigh, NC, USA Melon: Catherine Dogimont Montfavet, France Michel Pitrat Montfavet, FRANCE James D. McCreight Salinas, CA, USA Watermelon: Todd C. Wehner Raleigh, NC, USA Stephen R. King College Station, TX, USA Cucurbita spp.: Harry Paris Ramat Yishay, Israel Les Padley Naples, FL, USA Other genera: Mark G. Hutton Monmouth, ME, USA Thomas C. Andres Bronx, NY, USA 2012-2013 ISSN 1064-5594 2102 Plant Sciences Building College Park, Maryland 20742-4452 USA Tel: (301) 405-1321 or (580) 889-7395 Fax: (301) 314-9308 cucurbit.genetics.cooperative@gmail.com http://cuke.hort.ncsu.edu/cgc/ On the front cover: Hodgsonia heteroclita Hook. f. & Thomson. In 1853 this member of the Cucurbitaceae was named after British civil servant Brian Houghton Hodgson who apparently provided lodging to the botanists Joseph Dalton Hooker and Thomas Thomson as they carried out field work in the Himalayas. The Cucurbit Genetics Cooperative (CGC) was organized in 1977 to develop and advance the genetics of economically important cucurbits. Membership to CGC is voluntary and open to individuals who have an interest in cucurbit genetics and breeding. CGC membership is on a biennial basis. For more information on CGC and its membership rates, visit our website (http://cuke.hort.ncsu.edu/cgc) or contact Tim Ng, (301)458-0243, cucurbit.genetics.cooperative@gmail.com. CGC Reports are issued on an annual basis. The Reports include articles submitted by CGC members for the use of CGC members. None of the information in the annual report may be used in publications without the consent of the respective authors for a period of five years. ISSN 1064-5594 Cucurbit Genetics Cooperative Report 35-36 (2012-2013) iii Contents Research Reports Cucumber (Cucumis sativus) 1. Infection Process of Sphaerotheca fuliginea on Host Cucumber and Nonhost Wheat Leaves Yanli Chen and Qing Ma 4. Histological Studies of Colletotrichum orbiculare on the Susceptible and Resistant Cucumber Cultivars Tuo Qi, Jing Yao, Chongzhao Hao and Qing Ma Watermelon (Citrullus lanatus) 7. Morphological Variability and Phenotypic Association among Pairs of Characters of some Watermelon chlorotic stunt virus Resistant Lines of Citrullus lanatus Thunb. Mohamed Taha Yousif, Abir Abdulrahman Ahmed, Adil Omer Salih, Asim Ubosara, Mohamed Ahmed ZulFugar and Al Fadil M. Baraka Cucurbita spp. 11. Two Cucurbita moschata BushParthenocarpic Breeding Lines Through an Interspecific Cross Young Hyun Om 13. Identification of Natural Sources of Resistance to Powdery Mildew, Zucchini yellow mosaic virus (ZYMV) and Fruit Flies Infestation in the Indigenous Pumpkin (Cucurbita moschata) Germplasm Cucurbit Genetics Cooperative Report 35-36 (2012-2013) Mohamed T. Yousif, Ali E. Eljack and Ali M. Osman 16. Inheritance of Rind Color and Reverse Striping in a Cucurbita pepo (subsp. texana) Cross Nick Biebel and Michael Mazourek 18. Patterns of Broad Normal Striping in Egg Gourd Brent Loy 22. Interaction of Three Loci, l-1, l-2, and d, in Conferring the Reverse Stripe Phenotype in Egg Gourd Brent Loy 27. Tendril Morphology in Bush and Vine Genotypes of Squash and Pumpkin Brent Loy 31. A Recessive Tendrilless Mutant in Ornamental Pumpkin Brent Loy 33. Inheritance of Lethal Yellow Seedling in Cucurbita moschata Duch. I.L. de Souza Neto, P.T. Della Vecchia, R.F. Kobori, R. F. and M.S. de Lima Gene Lists 35. 2013 Gene List for Other Genera of Cucurbitaceae Kyle M. VandenLangenberg and Todd C. Wehner iv